JPS61267857A - Graph display device - Google Patents

Abstract

PURPOSE:To simplify the key operations by changing a normal distribution curve into a graph with use of a standard deviation value obtained from the input value as well as the mean value of the input value based on the X-axis and Y-axis ranges set previously. CONSTITUTION:A control part 20 gives the arithmetic data to an arithmetic circuit 21 in response to the key operation at a key input part 10 and also gives the address data and a read/write command to a memory part 24. The part 24 contains a DS memory 31 for single variable statistics, a range memory 33, an X memory 34 for X-axis data, a Y memory 35 for Y-axis data, a normal distribution memory 36 and an arithmetic memory 37. The circuit 21 calculates the mean value of the input value and a standard deviation obtained from the input value and decides the normal distribution value within a screen of a display part 26 from the mean values of the part 24 and said input value and standard deviation. This decided distribution value is displayed on the screen of the part 26.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a graph display device that graphs and displays specified data with a simple input operation. [Prior Art and its Problems] 2. Description of the Related Art Some small electronic calculators such as null computers and pocket computers are capable of displaying graphs by creating a RASIC program and inputting data.

However, with the above-mentioned conventional small electronic calculators with graph display functions, it is necessary to set up a dedicated graph program, which makes it difficult for people who are not familiar with programming to create graphs, and it is difficult for people who are accustomed to programming to create graphs. Even so, input operations were extremely troublesome. Furthermore, there is nothing that can be used to calculate the normal distribution, and therefore it has been impossible to display a normal distribution graph. An object of the present invention is to provide a graph display device that can obtain a factory distribution curve and graph it.

[Key points of the invention]

According to the present invention, a normal distribution curve is graphed using the average value of input numerical values and the standard deviation value based on the input numerical values, based on the preset +X-axis range and Y-axis range.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, reference numeral 10 indicates a key input section, including a numeric keypad 11, a function key 12, a Graph key 13, a Line key 14 for displaying graphs using broken lines, a Lenz key 15 for inputting range data, and an SD memo for l variable statistics. I7
(SD key to specify 16. LR key 17 to specify LR memory for variable statistics, DT key 18 to specify data input, Execution key to execute graph creation operation (IX
I) It is equipped with 19. And the key human resources department 10
The input data from is sent to the control unit 20. This control section 20 stores various control programs, and provides sampling signals to the key human power section 10, as well as control commands to the arithmetic circuit 21, formula buffer 22, and display buffer 23. Further, the control section 20 includes the key human power section 1
In response to the key operation of 0, calculation data is given to the calculation circuit 21, and data is stored in the storage section 24 composed of RAM or the like.
gives response data and read/write commands. The arithmetic circuit 21 is connected to the formula buffer 22 and the storage section 24 via the data/protection DB. It also serves as the above-mentioned formula buffer, input buffer, and input buffer, and is designed to temporarily store key manual data.

The arithmetic circuit 21 also includes an address designation section 25, and the address designation section 25 controls display parameters.

Specify the address of the file 23 and output the data. This display buffer 23 consists of a text display buffer 231 and a graphic display buffer JJb, and the arithmetic circuit 2
The data written in step 2 is output to the display section 26 and displayed in the text display area 26a and graph display area 26b, respectively. This graph display area 26b is
As shown in the figure, the number of segments in the Y-axis direction is M, for example 96.
, the number of segments in the X-axis direction is N, for example 64, and the left end in the X-axis direction is the minimum value xK! 11n, the right end is the maximum value xrn, engineering, r In the a direction, the lowest end is the minimum value Y
The top end of m1ns is set as the maximum value ymax, and the coordinate position is displayed with % (X + 7) data for input data (X, Y).

Therefore, the storage unit 24 includes an SD memory 31 for one-variable statistics, Renzo data
maxq Range memory 33 that stores range specification data such as the number of X-axis segments M and the number of Y-axis segments N, the X memory 34 that stores X-axis data, and the X memory that stores Y-axis data.
Memory 35, normal distribution memo for storing normal distribution creation data Σx2, ΣX, n I) 36, x, 1% m1α, de,
A memory 37 for calculations such as σ is provided.

Next, the operation of the above embodiment will be explained. When creating a graph, key operations for creating the graph are performed according to the procedure shown in the flowchart of FIG. First, in step A1 of FIG.
Therefore, Xmax s Xmin, Ymaxs Ym
Specify the range of in. And when creating a graph of one variable, step 7'A 2 f:a step,
7° Proceed to A3 and specify and input the number of memories to be used for graph creation.

This memory number designation data is written into the m memory of the storage section 24 under the control of the control section 2Q.

After that, as shown in step A4, press the SD key 16, LR
The key 17 is used to specify SD mode or I, R mode P. When creating a two-variable graph, step, fA3
The mode designation operation in step A4 is performed without performing the memory number designation operation shown in FIG. Next step is 7'
) 5, input graph data by operating the DT key 18, and then specify the graph as shown in step A6. The details of the data input of ST 7'A5 and the graph designation of ST 7ak6 will be explained below.

In step A5, the graph data input by operating the DT key 18 is written into the SD memory 31 in the storage unit 24 through predetermined processing (details will be described later). For example, if we were to create a graph for the one-variable statistical data shown in Figure 4 (ra), we would first
After specifying the SD mode by operating the SD key 16, as shown in FIG.

The data input using the numeric keypad 11 is temporarily held in the formula buffer 22, and then processed by operating the DT key 18 according to the flowchart shown in FIG. Thereafter, input data is processed in accordance with the control of the control unit 20 by the combined operation of the numeric keypad 11 and the DT key 18, and the processing results are sequentially written to the SD memory 31.Hereinafter, the input data will be input according to the flowchart in FIG. The data processing and data writing operation to the SD memory 3 will be explained. First, in step fB1 of FIG. 5, the control unit 20 determines whether or not the SD mode P is specified by operating the SD key 16. If the SD mode is specified, the control unit 20 selects step fB1 in step fB1. Then, the numerical data (input data) held in the formula buffer 22 is read out to the storage section 24 via the arithmetic circuit 21 and written into the X memory 34. In the next discussion, in step B3, the value X stored in the X memory 34 is accumulated in the ΣX memory of the normal distribution memory 36, and the value
Add 1 to the contents of memory. Then, proceed to step B4, compare the contents of the X memory and the contents of the Xm□ memory,
It is determined whether the condition of X<Xrno is satisfied.

In this step, if it is determined that the above conditions are not satisfied, the process will be terminated, but
If the above conditions are satisfied, proceed to step B5 and X≧
It is determined whether the conditions of Xml are satisfied. In this step B5, if it is determined that the above conditions are not satisfied, the process is immediately terminated, but if it is determined that the above conditions are satisfied, the process proceeds to Stella fB6. That is, step B4. The BS determines whether or not the input data is within a range that can be graphed, and only if graphing is possible, the process proceeds to step B6, where the arithmetic circuit 21 performs the calculation and stores the address data for the SD memory 3. ? α in the calculation memory 37 is obtained by converting it into an integer.
Write to memory. After that, α as shown in step and de B7
The contents of the SD memory 3, which is addressed by the contents of the memory, are set to r+IJL, and the processing for the input data is completed.

Thereafter, the above operation is repeated every time the DT key 18 is operated, and the distribution state of the input data is written in the SD memory 31.

In addition, if it is determined in step B1 that the SD motor is not specified, the process proceeds to step fB8, and the L
It is determined by operating the R key 17 whether LR so-f is designated.

If LR mode 9 is not specified, the process ends, but if LR mode is specified, step B
Proceeding to step 9, the two numerical data held in the formula buffer 22 are written into the X memory 34 and the X memory 35, respectively. Next, proceed to step and deBIO, and judge whether the contents However, if the conditions are satisfied, proceed to Step and DeBIX. In step B11, it is determined whether the content Y written in the FiY memory 35 satisfies the condition YmlY≦Y<Ymax, and if the content is not exceeded, the process is terminated. That is, it is determined whether the input data is within the range that can be graphed using the steps B11 and B12 described above.
Proceed to. In this step B12, the above X memo +)34
,' (the data held in the memory 35 is written to the LRn memory in the storage unit 24, not shown), and the process ends.

Therefore, when creating a (-bar graph, (b) SD line graph, (c) normal distribution graph based on the data stored in the SD memory 31, the SD mode is used as shown in FIG. 4 (bl). In (a), Graph EXE (bl, Graph Line EXE (c)
, Perform key operations on Graph Line I EXE.

The graph designation operation described above creates a graph according to the designation contents, and the details will be explained below with reference to the flowchart of FIG. 6. That is, when the execution key 19 is operated, the control unit 2o performs steps 7 and 7 in FIG.
'CI As shown in K, it is determined whether or not the graph mode r of SD and LR is specified, and if the graph mode b is not specified, the process proceeds to step C2 and other processing is executed. If SD-Main FiLR mode is specified, proceed from step C to step 71'C3 and enter the formula.
Outputs a formula judgment command to the step 22, and first
At 7°C4, it is determined whether or not Graph designation has been made.

If Graph specification is not done, the above Stella 7
"Execute the process of C2, but if the designated table has a Graph designation, proceed to step C5 and judge whether or not a Line designation has been made. If there is a Line designation, proceed to step C6 and convert it to a bar graph. Execute the process.Lin
If e designation is not 1xfi, proceed to ST, 7'C7 and SD
Determine whether mode is specified or not, and if SD mode is not specified, proceed to step C8 and set LR Fra.
Perform the graphing process and display the graph. Also,
If it is determined that the SD mode is not in step C7, the process proceeds to step C9, where it is determined whether or not Line is specified.
Proceed to clo, execute SD line graphing processing, and display the graph.

i9, if it is determined in Stellar fC9 that the L1n@1 designation has been made, the process proceeds to Stellar fc11, executes a normal distribution graphing process which will be described in detail later, and displays the graph.

Next, the details of the normal distribution graphing process of ST and DE C1l will be explained according to the flowchart of FIG. In this case, the range specification is rXmaz:158, x! nI
It is assumed that the settings are: n: 134, Yrnaz: 8, Ymin*2, number of meshes used m=8. Therefore, when performing the above-mentioned bar graphing process, first, as shown in step D1 of FIG.
After setting "0" in the X memory of step 7, in step D2, calculate Σz/nJ, that is, find the average value of the input numerical values and write it to the memory of calculation memory 37.Next, in step D3 As shown, the arithmetic circuit 21 performs the calculation to obtain the mark deviation value, and writes the integer value to the σ memory of the calculation memory 37. Then, step D4
, whether the value obtained by doubling the maximum value V71”・σ of the height deviation value is smaller than the range data Ym&!, that is,
It is determined whether the displayed graph is positioned below the center of the graph display area 26b. If the displayed graph is located below the center of the graph display area 26b, proceed to step D5, reset the value as Yma, and set the maximum value of the graph to 80% of the graph display area 26b.
It is displayed in the position of . If the judgment result of step D4 is NO or step D5
Upon completion of the processing, the process proceeds to step D6, where the value of X is determined by the calculation, and the value converted into an integer is written into the X memory 34. Next, the value of Y is determined by the operation shown in step D7, converted into an integer, and written into the Y memory 35. Furthermore, the value of y is determined by the operation of K as shown in step D8, and the integer is written. and writes it into the X memory of the calculation memory 37. After that, Ste, DeD
As shown in FIG. 9, the contents of the X memory and the Light. Then, as shown in step D10, after r+IJ the contents of the X memory of the calculation memory 37, it is determined in step Dll whether the contents of the X memory have become equal to the number of segments M, and if not, step Return to step D6 and repeat the same process. From now on, each time the above operation is repeated, the contents of the X memory will be changed to "+1" in step D10.
As a result, if the contents of the X memory become equal to the number of segments M, the normal distribution graphing process ends, and as shown in FIG.
As shown in b), a normal distribution graph is displayed in the graph display area 26b.

In the above embodiment, the normal distribution calculation is executed each time, but since the terms 2Tσ and 2σ are constants, it is necessary to calculate them in advance and read the data during subsequent calculations. By doing so, the execution time of graphing processing can be shortened.

〔Effect of the invention〕

As described above in detail, according to the present invention, the preset
Based on the axis range and Y-axis range, the normal distribution curve is graphed using the average value of the input numerical values and the deviation value of the input numerical values, so you can calculate the normal distribution curve with simple key operations and graph it. It is possible to provide a graph display device that can display graphs.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention. Figure 1 is a block diagram showing the circuit configuration, Figure 2 is a diagram showing an example of the configuration of a graph display screen, and Figure 3 is an example of manual key operation when creating a graph. Flow chart, shown! Figure 4 (a) is a diagram showing an example of inputting statistical data, Figure 4 (b) is a diagram showing an example of key operation and graph type specification when inputting l-variable statistical data, and Figure K5 is a diagram showing an example of inputting statistical data. FIG. 6 is a flowchart showing processing operations for statistical data, FIG. 6 is a flowchart showing graph creation operations, and FIGS. 7(a) and (b) are flowcharts and graph display examples showing details of normal distribution bar graphing processing in FIG. 6. FIG. 10... Key human power department, 11... Numeric keypad, 13...
・Graph key, 14 ・-・Line key,
15-... Range key, 16... SD key, 17...
・LR key, 18...DT key, 19...Execution key, 20...Control unit, 21...Arithmetic circuit, 22...
Formula buffer, 23... Display buffer, 24... Storage section, 25... Azores specification section, 26... Display section,
26a...Text display area, 26b...Graph display area, 31...SD memory, 33...Range memory, 34...X memory, 35...Y memory, 3
6... Normal distribution memory, 37... Memory for calculation. Applicant's agent Patent attorney Takehiko Suzue (Figure 2) Figure 7(b)

Claims (1)

[Claims] A means for inputting numerical data, a means for specifying a normal distribution graph, a display section for displaying the graph, a memory for storing range data of numerical values that can be graphed for this display section, and an average of the input numerical values. means for calculating standard deviation values based on values and input numerical values; and means for sequentially determining normal distribution values within the screen of the display unit based on the memory and the average value and standard deviation value and displaying them on the screen of the display unit. A graph display device comprising: means.