JP5062280B2 - Graph display device and program - Google Patents

Description

  The present invention relates to a graph display device and a program having a function of drawing a graph based on list data composed of a plurality of numerical data.

  An electronic calculator (functional calculator) having a function calculation function has a function of drawing a graph corresponding to the input list data when the statistical calculation mode is set and list data (statistical data) is input. The information handled here is “respective numerical data constituting list data” and “graph data”, but since the types of data are different, it is difficult to compare the correspondence.

  Here, in order to improve the visual expressive power of the calculator, display colorization is considered. For example, in Patent Document 1, an error between the regression graph and input data is displayed in color. In Patent Document 2, the display color is changed for each regression graph and displayed in color.

Japanese Patent Laid-Open No. 11-184819 JP-A-10-124690

  However, in Patent Documents 1 and 2, only the display of the graph is colored, and it is not sufficient to visually compare the mutual relationship with each numerical data of the list data that is the basis of the graph. Absent.

  The present invention has been made in view of the above points, and when a graph is drawn based on each numerical data of the list data, the mutual relationship with each numerical data of the list data that is the origin of the graph is shown. It is an object to provide a graph display device and a program that can be easily grasped visually.

A graph display device according to claim 1 of the present invention inputs list data composed of a plurality of numerical data by a user operation, and designates an arbitrary color for each numerical data of the list data, and this list input List storage means for storing the list data input by the means in association with the color information designated for each numerical data, graph generation means for graphing the list data stored in the list storage means, and the graph Graph display means for color-displaying the graph generated by the generation means according to the color specified for each numerical data, first color change means for changing the color of the graph displayed by the graph display means, The color changed by one color changing means is added to the list data corresponding to the graph stored in the list storage means. Mirrored by, characterized by comprising a second color changing means for changing similarly the specified for each measure color.

Further, Claim 2 of the present invention, in the graph display apparatus according to claim 1, wherein said graph generating means, based on the two sets of list data stored in said list storing means, numerical data of one list data Is generated as a plot graph in which points having the X value as the X value and the numerical data of the other list data as the Y value are plotted, and the graph display means converts each point of the plot graph generated by the graph generation means into the numerical data. The two sets of list data by the second color changing means when the color of each point of the plot graph is changed by the first color changing means. The color of the corresponding numerical data in is also changed in the same manner.

Further, Claim 3 of the present invention, in the graph display apparatus according to claim 1, wherein said graph generating means, based on a set of list data stored in said list storing means, numerical data of the list data A histogram composed of a plurality of columnar graphs accumulated for each section is generated, and the graph display means color-displays each columnar graph of the histogram generated by the graph generation means according to a color specified for each numerical data. When the color of each columnar graph of the histogram is changed by the first color changing unit, the color of the corresponding numerical data in the set of list data is also changed by the second color changing unit. It is characterized by being changed similarly.

Further, Claim 4 of the present invention, in the graph display apparatus according to claim 1, wherein said graph generating means, based on the stored two sets of list data to said list storing means, numerical data of one list data X is the X value, and the numerical data of the other list data is the Y value, and the graph display means colors the regression graph generated by the graph generation means according to the color specified for each numerical data. Display, and when the color of the regression graph is changed by the first color changing unit, the color of each numerical data of the two sets of list data is similarly changed by the second color changing unit. It is characterized by being.

A program according to claim 5 of the present invention is a program for graph display control used in a computer having a display unit capable of color display, and the computer is used to display list data consisting of a plurality of numerical data by user operation. A list input means for specifying an arbitrary color for each numerical data of the list data, and a list for storing the list data input by the list input means in association with the color information specified for each numerical data Storage means, graph generation means for graphing the list data stored in the list storage means, graph display means for color-displaying the graph generated by the graph generation means in accordance with the color specified for each numerical data, and the graph First color changing means for changing the color of the graph displayed by the display means; A second color change that similarly changes the color specified in each numerical data by reflecting the color changed by the first color changing means in the list data corresponding to the graph stored in the list storage means It is a computer readable program for functioning as a means .

  According to the present invention, when a graph is drawn based on each numerical data of the list data, it is possible to easily grasp the interrelationship with each numerical data of the list data that is the origin of the graph. it can.

FIG. 1 is a front view showing an external configuration of an electronic computer used as a graph display device according to the first embodiment of the present invention. FIG. 2 is a block diagram showing a circuit configuration of the electronic computer in the embodiment. FIG. 3 is a diagram showing a configuration of list data used in the electronic computer in the embodiment. FIG. 4 is a block diagram showing a functional configuration of a CPU provided in the electronic computer according to the embodiment. FIG. 5 is a flowchart showing the overall flow of the graph display process in the statistical calculation mode executed by the CPU provided in the electronic computer in the embodiment. FIG. 6 is a diagram showing an example of a list input screen in the same embodiment. FIG. 7 is a diagram showing an example of a graph display screen when “Scatter” is selected in the embodiment. FIG. 8 is a diagram showing an example of a graph display screen when “Histgram” is selected in the embodiment. FIG. 9 is a diagram showing an example of a color-changed histogram in the same embodiment. FIG. 10 is a diagram comparing the list data corresponding to the histogram according to the embodiment before and after the color change. FIG. 11 is a diagram showing an example of a graph display screen when “regression graph” is selected in the embodiment. FIG. 12 is a diagram showing an example of a regression graph with the color changed in the embodiment. FIG. 13 is a diagram comparing the list data corresponding to the regression graph in the same embodiment before and after the color change. FIG. 14 is a flowchart showing the overall flow of the graph display process in the statistical calculation mode executed by the CPU provided in the electronic computer according to the second embodiment of the present invention. FIG. 15 is a diagram showing an example of a plot graph display screen in the embodiment. FIG. 16 is a diagram showing a state in which a regression graph is drawn from each point of the plot graph in the same embodiment. FIG. 17 is a diagram showing a state in which a regression graph is redrawn by changing the color of an arbitrary point of the plot graph in the same embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a front view showing an external configuration of an electronic computer used as a graph display device according to the first embodiment of the present invention. This electronic computer is called a “graph function calculator” and has a function for drawing and displaying a graph corresponding to an input function expression or statistical data.

  The main body of the electronic computer 10 is provided with a key input unit 12 in a range of about two thirds from the lower end of the front of the main body, and a display unit 13 in a range of about one third from the upper end.

  The key input unit 12 includes a numeric / symbol key 12a, a function / operator key 12b, a “MENU” key 12c, a “SHIFT” key 12d, a “Color” key 12e, a “Graph” key 12f, a “Trace” key 12g, An “EXIT” key 12h, a cursor key 12i, function keys “F1” to “F6”, and the like are provided.

  The numerical value / symbol key 12a includes a key group for inputting numerical values / symbols in which individual keys such as numerals and symbols are arranged.

  The function / operator key 12b includes arithmetic functions, various function symbol keys operated when inputting a function expression, and operator keys such as “+”, “−”, “×”, “÷”, and “=”. .

  The “MENU” key 12c is a calculation mode in which an arbitrary calculation formula such as an arithmetic calculation formula or a function calculation formula is input to perform calculation processing, a graph mode in which graph drawing processing corresponding to the input function formula is performed, Displays a selection setting menu for various operation modes, such as a statistical calculation mode for performing statistical calculations, an e-Activity mode for performing graph function learning processing, and a program mode for inputting arbitrary programs to perform corresponding calculation processing. It is operated when making it.

  The “SHIFT” key 12d is operated together with the corresponding key when the various symbols and functions described at the upper left of each key top in the key input unit 12 are designated and input.

  The “Color” key 12e is operated when an arbitrary color is designated for input data, a graph, or the like.

  The “Graph” key 12f is operated when drawing an arbitrary graph based on input data.

  The “Trace” key 12g is operated when setting a trace mode for tracing a graph of a function expression displayed on the screen.

  The “EXIT” key 12h is a key for exiting the current state.

  The cursor keys (“↑”, “↓”, “←”, “→”) 12i are operated when selecting and sending the displayed data and moving the cursor CL.

  The function keys “F1” to “F6” are operated to select various selection menus arranged and displayed along the lower end of the screen of the display unit 13 according to various operation modes.

  In addition, for the display unit 13, for example, a liquid crystal display device capable of color display having a display range of 186 dots vertically × 378 dots horizontally is used.

  FIG. 2 is a block diagram showing a circuit configuration of the electronic computer 10.

  The electronic computer 10 includes a CPU 11 that is a microcomputer. The CPU 11 operates each part of the circuit by starting a program, and executes various functions provided in the electronic computer 10 such as a calculator function and a function graph display function. In addition to the key input unit 12 and the display unit 13 shown in FIG. 1, the CPU 11 is connected to a storage device 14, a RAM 15, a recording medium reading unit 16, a communication control unit 18, and the like.

  The storage device 14 includes a memory device such as a ROM, and stores various data and programs in addition to the graph display control program 14a for realizing the present invention.

  The RAM 15 stores various data necessary for the processing operation of the CPU 11. The RAM 15 is provided with an expression data storage area 15b, a list data storage area 15c, and a graph data storage area 15d in addition to a display data storage area 15a in which data displayed in color on the screen of the display unit 13 is developed. Yes.

  In the formula data storage area 15b, data related to a function formula input by operating the key input unit 12 is stored. In the list data storage area 15c, list data created by the list function in the statistical calculation mode is stored together with color designation attribute information (see FIG. 3). In the graph data storage area 15d, data relating to a graph created based on the function formula data or the list data is stored.

  The recording medium reading unit 16 reads data recorded on the recording medium 17. As the recording medium 17, for example, a memory card is used, and a program, an image, and the like are recorded.

  The communication control unit 18 performs data communication with an external terminal connected via a USB (Universal Serial Bus) (not shown), or data with an external terminal connected wirelessly via a predetermined communication line. Communicate.

  FIG. 3 is a diagram showing the configuration of list data stored in the list data storage area 15 c of the RAM 15 provided in the electronic computer 10.

  The list data is also referred to as “statistical data” or “numerical data”, and has numerical data input to each cell of a list (table) 22 provided on a list input screen 21 described later. In these numerical data, an arbitrary color of a plurality of colors prepared in advance can be specified as a display color, and the specified color is associated with the numerical data as attribute information, and the list data storage area 15c of the RAM 15 is stored. Is remembered.

  In the example of FIG. 3, two list data “list 1” and “list 2” are shown. Data 1, 2, 3,... In the figure indicate arbitrary numerical data. In both “List 1” and “List 2”, “black” is designated for data 1, 2 and 3, “red” for data 4, “black” for data 5, “red” for data 6, In data 7, “blue” is designated.

  FIG. 4 is a block diagram showing a functional configuration achieved by the CPU 11 provided in the electronic computer 10 executing the graph display control program 14a.

  In the graph display, the CPU 11 includes a list input control unit 11a, a list storage control unit 11b, a graph generation control unit 11c, a graph display control unit 11d, a first color change control unit 11e, and a second color change control unit 11f. Function.

  The list input control unit 11a displays a list input screen 21 (see FIG. 6) described later, thereby inputting list data composed of a plurality of numerical data by a user operation, and an arbitrary color for each numerical data of the list data Controls to specify.

  The list storage control unit 11b performs control for storing the list data input by the list input control unit 11a in the list data storage area 15c of the RAM 15 in association with the color information specified for each numerical data.

  The graph generation control unit 11c performs control for graphing the list data stored in the list data storage area 15c of the RAM 15 by the list storage control unit 11b.

  The graph display control unit 11d performs control for color-displaying the graph generated by the graph generation control unit 11c on the screen of the display unit 13 according to the color specified in each numerical data.

  The first color change control unit 11e performs control for changing the color of the graph displayed by the graph display control unit 11d.

  The second color change control unit 11 f reflects the color changed by the first color change control unit 11 e in the list data corresponding to the graph stored in the list data storage area 15 c of the RAM 15, so that each numerical value is changed. Control to change the color specified in the data.

Next, the operation of the embodiment will be described.
Note that the processes shown in the following flowcharts are executed when the CPU 11, which is a computer, reads the graph display control program 14 a stored in the storage device 14.

  FIG. 5 is a flowchart showing the overall flow of the graph display process in the statistical calculation mode executed by the CPU 11 provided in the electronic computer 10.

(Data input)
First, when the user operates the “MENU” key 12 c provided on the key input unit 12 of the electronic computer 10 to set the statistical calculation mode, the list input as shown in FIG. 6 is performed on the display unit 13 under the control of the CPU 11. A screen 21 is displayed (step A11).

  As shown in FIG. 6, a list (table) 22 composed of a plurality of cells is provided on the list input screen 21. When the user operates the numerical value / symbol key 12a of the key input unit 12 to input numerical data into each cell of the list 22, list data (statistical data) including these numerical data is created (step) A12).

  At this time, when the “Color” key 12 e provided in the key input unit 12 is operated, a selection menu of red (Red), blue (Blue), green (Grn), and yellow (Yllw) is displayed on the lower side of the list input screen 21. 23 is displayed, and an arbitrary color can be designated for each numerical value by operating a function key corresponding to each color of the selection menu 23.

  Here, it is assumed that the function key “F2” is operated in red, the function key “F3” is operated in blue, the function key “F4” is operated in green, and the function key “F5” is operated in yellow.

  In the example of FIG. 6, red is input to the numerical data “10” input to the fourth cell of List1, black is input to the numerical data “9” input to the fifth cell, and input to the sixth cell. The designated numeric data “11” is designated in red, and the numeric data “13” entered in the seventh cell is designated in blue.

  The symbols (red), (black), and (blue) attached to the numerical data represent the designated color. These symbols are given for convenience because they cannot be expressed by coloring due to restrictions in the drawings, and in actuality, numerical data is displayed in color in a specified color.

  In this way, when an arbitrary color is designated for each numerical data of the list data (Yes in step A13), the designated color is set as the attribute information in the numerical data and stored in the list data in the RAM 15. It is stored in the area 15c (step A14).

  If no color is specified, black is assumed to be the default color for the numerical data.

(Graph display based on list data)
After the creation of the list data, when the “Graph” key 12f provided in the key input unit 12 is operated, a graph type selection menu (not shown) showing graph types such as “Scatter”, “Histgram”, and “Regression graph” ) Are displayed along the bottom of the screen, and any graph type can be selected by operating the function keys.

  “Scatter” means plotting the coordinate point specified by the X value and the Y value on the XY coordinate, and the graph drawn by the plotted point is “plot graph” or “ This is called a “scatter diagram”.

  Here, in the case of “Scatter”, the user designates two sets of list data as an X value and a Y value, and performs an operation of instructing drawing of a plot graph (scatter diagram).

  When such an operation is performed (Yes in Step A15), it is compared in units of numbers whether or not the colors designated in the numerical data (elements) of the two sets of list data are the same (Step A16). If the two color data have the same color (Yes in step A16), a plot graph is generated in which the points (X, Y) are sequentially plotted in the specified color, and the data of the plot graph is stored in the graph data in the RAM 15. It is stored in the area 15d (step A17).

  At this time, if there is a numerical data color that does not match between the two (No in step A16), an error message to that effect is displayed and a user's correction instruction is awaited.

FIG. 7 shows an example of the graph display screen 31 when “Scatter” is selected.
For example, if list 1 in FIG. 6 is designated as an X value and list 2 is designated as a Y value, the point (10, 1.1) is red, the point (9, 0.8) is black, and (11, 1) A plot graph (scatter diagram) 32 is generated by plotting the points of .1) in red and the points of (13, 1.5) in blue.

  In the case of “histogram”, the user performs an operation of designating a set of list data, setting an arbitrary numerical value range in the list data, and instructing drawing of the histogram.

  When such an operation is performed (Yes in Step A18), it is determined whether or not the same color is designated in the numerical data (element) for each section (Step A19). If the color of the numerical data is the same (Yes in step A19), a histogram expressed in a designated color for each section is generated and stored in the graph data storage area 15d of the RAM 15 (step A20).

  At this time, if there is a piece of numerical data whose color does not match somewhere (No in step A19), an error message to that effect is displayed and a user's correction instruction is awaited. Note that if the designated list data does not include color-designated numerical data, a default black histogram is generated.

FIG. 8 shows an example of the graph display screen 33 when “Histogram” is selected.
The histogram 34 includes a plurality of columnar graphs 35a, 35b, 35c... In which numerical data is accumulated for each section. The cumulative results of numerical data for each section can be compared from the heights of these columnar graphs 35a, 35b, 35c.

  The example of FIG. 8 corresponds to the list 1 shown in FIG. 10, and since the numerical data is all black, the columnar graphs 35a, 35b, 35c... Constituting the histogram 34 are all displayed in black. Yes. If a color other than black is designated for each numerical data, the columnar graphs 35a, 35b, 35c... Are displayed in color with the designated color.

  In the case of a “regression graph”, the user designates two sets of list data as an X value and a Y value, and sets “linear regression”, “secondary regression”, “cubic regression”, etc. as regression types. Set and instruct to draw a regression graph.

  When such an operation is performed (Yes in Step A21), it is determined whether or not the colors specified in all numerical data (elements) of the two sets of list data are the same (Step A22). If the colors of all the numerical data are the same (Yes in step A22), the regression calculation according to the set regression type is performed, a regression graph is generated according to the calculation result, and the graph data storage area 15d of the RAM 15 is obtained. (Step A23).

  At this time, if there is a data that does not match the color of the numerical data in the two list data (No in step A22), an error message to that effect is displayed and a user's correction instruction is awaited.

FIG. 11 shows an example of the graph display screen 37 when “regression graph” is selected.
For example, the regression graph 38 is drawn by designating list 1 as an X value and list 2 as a Y value and setting linear regression.

  Note that the example of FIG. 11 corresponds to List 1 and List 2 shown in FIG. 13, and the color of each numerical data is all black, so the straight line of the regression graph 38 is displayed in black. If a color other than black is designated for each numerical value data, the straight line of the regression graph 38 is displayed in color with the designated color.

(Color change after graph display)
In this way, when the graph data corresponding to the graph type selected by the user is stored in the graph data storage area 15d of the RAM 15, the graph data is expanded in the display data storage area 15a of the RAM 15, and the screen of the display unit 13 is displayed. It is displayed above (step A24). At this time, the graph is displayed in color in the color designated for each numerical data of the list data that is the origin of the graph.

Here, after the graph is displayed, when the “Color” key 12e provided in the key input unit 12 is operated by the user (Yes in Step A25), red (Red) is displayed on the lower side of the graph display screen. A selection menu 23 of blue (Blue), green (Grn), and yellow (Yllw) is displayed.

  When one color in the selection menu 23 is designated by the operation of the function key (Yes in Step A26), the color of the entire graph is changed to the designated color (Step A27). Accordingly, the color designated for each numerical data of the list data stored in the list data storage area 15c of the RAM 15 is similarly changed (step A28).

  For example, when the “Color” key 12e is operated in a state where the regression graph 38 as shown in FIG. 11 is displayed, the selection menu 23 is displayed on the lower side of the screen, and the blue color in the selection menu 23 is displayed. If (Blue) is designated by the operation of the function key, the straight line of the regression graph 38 is changed from black to blue.

  FIG. 12 shows the regression graph 38 after the color change. The alternate long and short dash line indicates that the color has been changed to blue for convenience. At this time, as shown in FIGS. 13A and 13B, the color specified for each numerical data of the list data corresponding to the regression graph 38 is also changed from black to blue.

  The same applies to the plot graph 32 shown in FIG. 7 and the histogram 34 shown in FIG. 8, and the color of these graphs is changed to the color specified in the selection menu 23, and the list data for which the color change is the target. This is reflected in all the numerical data and the color is changed in the same manner.

-Partial change On the other hand, after operating the "Color" key 12e (Yes in Step A25), if the "Trace" key 12g is operated instead of the function key (Step A29), a red ( A selection menu 23 of Red, Blue (Blue), Green (Grn), and Yellow (Yllw) is displayed, and partial color change is performed in the following procedure.

  Since the electronic computer 10 is not provided with a touch panel, when the trace mode is switched by operating the “Trace” key 12g, the object being displayed by the operation of the cursor key 12i (that is, a point on the graph, etc.) ) Are designated one by one.

  Here, when the “Trace” key 12g is operated, the currently displayed graph type is first determined (step A30). Here, if the currently displayed graph type is not a plot graph or a histogram, that is, if it is a regression graph (No in step A30), the color cannot be partially changed, so an error message to that effect is displayed. Is displayed.

  If the currently displayed graph type is a plot graph or a histogram (Yes in Step A30), an object (such as a point on the graph) selected by operating the cursor key 12i is extracted as a color change target (Step A31). ).

  When one color in the selection menu 23 is designated by the operation of the function key (Yes in Step A32), the color of the extracted object is changed to the designated color (Step A33). The color of the corresponding data in the numerical data of the list data stored in the list data storage area 15c of the RAM 15 is also changed (step A34).

  For example, in the “Histgram” graph display screen 33 shown in FIG. 8, when the “Color” key 12e is operated, the selection menu 23 is displayed on the lower side of the screen. At this time, it is assumed that each of the columnar graphs 35a, 35b, 35c... Constituting the histogram 34 is displayed in black.

  Here, for example, if the columnar graph 35a is selected as a color change target (object) and red (Red) in the selection menu 23 is designated, only the columnar graph 35a is changed from black to red.

  FIG. 9 shows an example of the histogram 34 after a partial color change. In FIG. 9, the hatched part of the histogram 34 in the columnar graph 35 a has been changed to red for convenience. At this time, as shown in FIGS. 10A and 10B, the color designated for each numerical data of the list data corresponding to the columnar graph 35a of the histogram 34 is also changed from black to red.

  Similarly, the color of the designated object can be partially changed while designating the object one by one by operating the cursor key 12i.

  Here, when the “EXIT” key 12h provided in the key input unit 12 is operated (Yes in step A35), the graph display state is exited, and the list data corresponding to the graph is stored from the list data storage area 15c of the RAM 15. It is read out and displayed on the screen (step A36). At this time, if there is a color change in the graph, the color of the displayed list data also changes.

  As described above, according to the computer 10 of the present embodiment, when the user inputs list data, an arbitrary color is designated for each numerical data of the list data, so that the specified color is used. The graph is displayed in color. Accordingly, the mutual relationship between the list data and the graph can be visually grasped by color, and the characteristics of the graph drawn based on the list data can be understood.

  Furthermore, when the user changes the color of the displayed graph in whole or in part, the color change is reflected in each numerical data in the list data, so each numerical data in the displayed graph and the list data is displayed. You can easily learn the interrelationship with the color change.

  In addition, since graphs corresponding to “Scutter”, “Histgram”, and “Regression graph” can be arbitrarily displayed in color as graph types, the characteristics of these graphs and the numerical data of the list data can be mutually displayed. It is convenient to learn the relationship easily by color change.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.

  In the second embodiment, after plotting points for each color, a regression graph is drawn by designating an arbitrary color among them.

  Since the basic apparatus configuration is the same as that of the first embodiment, the processing operation will be described here.

  FIG. 14 is a flowchart showing the overall flow of the graph display process in the statistical calculation mode executed by the CPU 11 provided in the electronic computer 10 according to the second embodiment of the present invention. In FIG. 14, the processing from Step B11 to Step B18 is the same as Step A11 to A17, A24 in FIG.

  Now, it is assumed that the plot graph is displayed on the screen of the display unit 13 in the color specified by the user based on the list data. FIG. 15 shows an example of the graph display screen 41 at that time. On the graph display screen 41, a plot graph (scatter diagram) 42 in which each point is plotted with a specified color is drawn.

  After the plot graph is displayed, when the user designates a “regression graph” by a predetermined operation (Yes in Step B19), a confirmation message 43 as to whether or not to specify a color is displayed as shown in FIG. 15 (Step B20). ).

  Here, when the user selects “specify color” by operating the cursor key 12i (Yes in step B21), as shown in FIG. 16, red (Red), blue (Blue), A selection menu 23 of green (Grn) and yellow (Yllw) is displayed. Each color in the selection menu 45 is designated by operating a function key.

  When one arbitrary color is designated in the selection menu 45 (Yes in step B21), the designated color is selected from the list data corresponding to the plot graph stored in the list data storage area 15c of the RAM 15. Is extracted, regression calculation is performed based on the extracted numerical data (step B22), and a regression graph is drawn in the designated color according to the calculation result (step B23).

  On the other hand, when the user selects “not specify color” (No in step B21), regression calculation is performed based on all the numerical data of the list data corresponding to the plot graph (step B24), and the calculation is performed. According to the result, the regression graph is drawn in black as the standard color (step B25).

  FIG. 16 shows an example of the regression graph 44 when the color is designated. In this example, a regression graph 44 in which red points are associated in the plot graph 42 is displayed. Note that the two-dot chain line in the regression graph 44 is displayed in red for convenience.

  Subsequently, when the “Trace” key 12g is operated (Yes in Step B26), an object (here, a point on the graph) selected by the operation of the cursor key 12i is extracted as a color change target (Step B27). ).

  When one color in the selection menu 23 is designated by operating the function key (Yes in Step B28), the color of the extracted object is changed to the designated color (Step B29). The color of the corresponding data in the numerical data of the list data stored in the list data storage area 15c of the RAM 15 is similarly changed (step B30). In this case, the two sets of list data that are the basis of the plot graph displayed in step B18 are subject to color change, and the color of the corresponding data in the numerical data of the two sets of list data is the specified data. Will be changed to the selected color.

  Similarly, the color of the designated object can be partially changed while designating the object one by one by operating the cursor key 12i.

  Here, when the “EXIT” key 12h provided in the key input unit 12 is operated (Yes in Step B31), the graph display state is exited, and the list data corresponding to the graph is stored from the list data storage area 15c of the RAM 15. It is read out and displayed on the screen (step B32). At this time, if there is a color change in the graph, the color of the displayed list data also changes.

  As described above, when the plot graph is displayed based on the numerical data of the list data, by specifying an arbitrary color, it is possible to draw a regression graph for only the specified color.

  Further, if the color of the target point is changed by operating the “Trace” key 12g, the regression graph based on the point after the color change can be redrawn after the list is once displayed by the “EXIT” key 12h. . Thereby, for example, it is possible to change the color of a point (abnormal point) to be excluded in the regression calculation and rewrite the regression graph. FIG. 17 is an example in which the regression calculation 46 is performed by changing the colors of the points P1 and P2 (in this case, changing from blue to red), and the regression graph 46 is redrawn including the points P1 and P2.

  In each of the above-described embodiments, five colors of red (Red), blue (Blue), green (Grn), and yellow (Yllw) are described as examples of colors that can be specified for each numerical data of the list data. However, it may be possible to specify a color other than these colors, or a configuration in which five or more colors can be specified.

  Further, although plot graphs, histograms, and regression graphs are taken as examples of graph types, the present invention can be similarly applied to drawing other graphs.

  Further, each operation method by the electronic computer 10 described in each of the embodiments, that is, the method shown in the flowcharts of FIGS. 5 and 14, is a memory card (ROM card, RAM) as a program that can be executed by a computer. Card), magnetic disk (flexible pull disk, hard disk, etc.), optical disk (CD-ROM, DVD, etc.), storage medium such as semiconductor memory (recording medium 17), and can be distributed. The computer (CPU 11) of the electronic computer 10 can execute the same processing by the method described above by reading the program recorded in the storage medium.

  Further, program data for realizing the above technique can be transmitted as a program code form via a communication network (public line). And the computer (CPU11) of the electronic computer 10 can perform the same process by the method mentioned above by receiving this program in the communication apparatus (communication control part 18) connected to the communication network.

  Note that the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the respective embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

10 ... electronic calculator,
11 ... CPU,
11a ... List input control unit,
11b ... List storage control unit,
11c ... graph generation control unit,
11d ... graph display control unit,
11e: a first color change control unit,
11f ... second color change control unit,
12 ... Key input part,
12a ... Numeric / symbol key,
12b: Function / operator key
12c ... "MENU" key,
12d “SHIFT” key,
12e ... "Color" key,
12f… “Graph” key,
12g ... "Trace" key,
12h… "EXIT" key,
12i ... cursor keys,
F1-F6 ... function keys,
13 ... display part,
14 ... Memory,
14a ... Graph display control program,
15 ... RAM,
15a ... display data storage area,
15b ... Formula data storage area,
15c ... List data storage area,
15d: Graph data storage area,
16: Recording medium reading unit,
17 ... recording medium,
18: Communication control unit.

Claims (5)

List input means for inputting list data composed of a plurality of numerical data by user operation, and specifying an arbitrary color for each numerical data of the list data;
List storage means for storing the list data input by the list input means in association with the color information specified for each numerical data;
Graph generation means for graphing the list data stored in the list storage means;
Graph display means for color-displaying the graph generated by the graph generation means according to the color designated for each numerical data;
First color changing means for changing the color of the graph displayed by the graph display means;
A second color that is changed by the first color changing means is reflected in the list data corresponding to the graph stored in the list storage means, and the color designated in each numerical data is similarly changed. A graph display device comprising color changing means . The graph generation means plots points based on the two sets of list data stored in the list storage means with the numerical data of one list data as the X value and the numerical data of the other list data as the Y value. Generate a plot graph,
The graph display means includes color-displaying each point of the plot graph generated by the graph generation means according to a color specified for each numerical data,
When the color of each point of the plot graph is changed by the first color changing unit, the color of the corresponding numerical data in the two sets of list data is similarly changed by the second color changing unit. The graph display device according to claim 1, wherein: The graph generation unit generates a histogram including a plurality of columnar graphs in which numerical data of the list data is accumulated for each section based on a set of list data stored in the list storage unit;
The graph display means includes color-displaying each columnar graph of the histogram generated by the graph generation means according to a color designated for each numerical data,
When the color of each columnar graph of the histogram is changed by the first color changing unit, the color of the corresponding numerical data in the set of list data is similarly changed by the second color changing unit. The graph display device according to claim 1, wherein: The graph generation means generates a regression graph based on the two sets of list data stored in the list storage means with the numerical data of one list data as the X value and the numerical data of the other list data as the Y value. And
The graph display means includes displaying the regression graph generated by the graph generation means in color according to the color specified for each numerical data,
When the color of the regression graph is changed by the first color changing unit, the color of each numerical data of the two sets of list data is similarly changed by the second color changing unit. The graph display device according to claim 1 . A program for controlling graph display used in a computer having a display unit capable of color display,
The computer,
List input means for inputting list data composed of a plurality of numerical data by user operation, and specifying an arbitrary color for each numerical data of the list data,
List storage means for storing the list data input by the list input means in association with the color information designated for each numerical data;
Graph generation means for graphing the list data stored in the list storage means;
Graph display means for color-displaying the graph generated by the graph generation means according to the color designated for each numerical data,
First color changing means for changing the color of the graph displayed by the graph display means;
A second color that is changed by the first color changing means is reflected in the list data corresponding to the graph stored in the list storage means, and the color designated in each numerical data is similarly changed. A computer-readable program for functioning as color changing means .

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