JPS60262694A - Graph forming machine having scale-up function - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a graphing machine that can draw graphs that display differences between graphs in an enlarged form and facilitate mutual comparison. 6 (Prior Art) In general, when displaying a graph, if data with relatively small differences are displayed as they are, the differences between them will be difficult to read, as shown in FIG. If you enlarge the scale, it will be easier to read the difference, but the entire graph will become abnormally large, making it impractical. Therefore, we enlarged the scale as shown in Figure 2.2 By omitting part of the scale, the difference in data can be easily read, and at the same time, there is a method that prevents the entire graph from becoming abnormally large. In hand-drawn graphs, the lines are o).

However, there has never been a graphing machine that has been able to implement such a method as a mechanical function.

(Object of the Invention) An object of the present invention is to provide a graph creation machine capable of creating a graph drawn by enlarging the graph and omitting part of the scale, as shown in FIG. It is something.

(Structure of the Invention) The graph creation machine of the present invention detects the maximum value and minimum value in the graph data stored in the storage means, calculates the difference between the detected maximum value and minimum value, and calculates the difference between the detected maximum and minimum values. an enlargement determination means that calculates a proportion of the size of the graph and compares the value with a standard value to determine whether or not to enlarge the graph; ~ calculation means, and selection means for selecting either the value output by the offset calculation means for offset 1 for expansion or the 95 offset values as a mark for not performing expansion, according to the output of the expansion determination means; means for generating graph plotting data based on the graph data from the storage means and the offset value from the selection means; means for generating plotting data regarding a scale such as an abbreviated display line when enlargement is to be performed; a plotting data modifying means for creating a graph plotting command based on data modified for abbreviated display from the graph plotting data and the plotting data regarding the scale; and a plotter for plotting a graph on a sheet in accordance with the graph plotting command. It is characterized by having the following.

(Explanation of Examples) FIG. 3 is a block diagram showing one embodiment of the present invention.

The "key manual means" is equipped with a numeric keypad for inputting data for a graph to be drawn, various function keys for specifying various functions to be executed, display lamps, etc.

The storage means 2 is a memory that stores programs necessary for causing this device to execute the functions specified by the key human power means 1 and input data for creating graphs.

The maximum value detection means 3 detects the data having the maximum value among the data in the storage means 2 to be used. The minimum value detection means 4 detects the minimum value of the data in the storage means 2 to be used.

The difference ratio detection means 5 calculates the ratio of the difference between the maximum value and the minimum value in the data to the maximum value. That is, ((maximum value - maximum) 1 value)/maximum value)
The standard data setting means 6, which performs the calculation, sets data that determines the limit of whether or not to display the enlarged scale or omit it. The data is set to 0.2 (20%), for example.

The comparison means 7 compares the difference ratio value calculated by the difference ratio calculation means 5 and the set value of the standard data setting means 6, and outputs a signal indicating enlargement when the difference ratio value is larger, and when it is not. Outputs a signal representing normal display.

The offset calculation means 8 performs calculations to determine the offset value of the graph display, that is, the actual data value of the zero level in the graph when the graph is enlarged. In other words, taking a bar graph as an example, if you cut off the bottom of the bar graph, leaving only the top, and you zoom in such a way that the bottom edge coincides with the graph's origin axis, the actual data value at the bottom edge is It is something that can be enjoyed. Offseller 1 ~ value is calculated by the following calculation: (Minimum value - (Maximum value - Minimum value) * α). However, α is a coefficient that determines the magnification rate. When α=1 is set, the length from the origin axis to the minimum value and the length from the minimum value to the maximum value are drawn equally.

The standard offset values 1 to 9 are for setting standard offset values, that is, offset values 1 to 9 when no enlarged display is performed. Normally, this standard offset value is 1 to 0.
is set to .

The selection means 10 selects the output value of the offset calculation means 8 when the result of the comparison by the comparison means 7 indicates enlargement, and otherwise selects the output value of the standard offset setting means 9.

The graph drawing data generation means 11 generates graph drawing data based on the graph data stored in the storage means 2 and the offset value from the selection means 10. If no enlargement is performed, the standard offset 1-value is used, so standard graph plotting data is generated.
When enlarging, the offset I value of the offset calculation means 8 is used, so enlarged graph drawing data is generated.

Scale line drawing data generation means] 2 is the selection means 1
Based on the offset value from 0 and the signal indicating the presence or absence of enlargement from the comparison means 7, if there is enlargement, it generates plotting data for the abbreviated display line (wavy line) as shown in FIG. , generates data for the scale and scale line for enlargement, and does not generate an abbreviation display line when there is no enlargement, and generates data for the standard scale and scale line.

Graph drawing data generating means 11 is used to draw a graph with a blank space between the two trees' omitted display lines as shown in FIG. 2 when enlarging. and scale line drawing data generation means 1
The plotting data obtained by changing and correcting the plotting data from 2 is generated, and a graph plotting command for the plotter 14 is created.

The plotter 14 controls the plotter mechanism section in accordance with the graph plotting command from the plotting data correction means 13 to produce a sheet]
This is an output section that draws a graph figure on -.

An outline of the operation of the graph creation machine of this embodiment configured as described above is as follows.

In creating a graph drawing command, first, it is determined whether or not to display an enlarged image. That is, the maximum value detection means 3
The maximum value in the data is detected by the minimum value detection means 4, the minimum value in the data is detected by the minimum value detection means 4, and the difference ratio calculation means 5 calculates (minimum value - (maximum value - minimum value) * α). The ratio of the difference part of the graph data to the whole can be calculated. Then, the comparison means 7 determines whether or not the obtained ratio is larger than the reference value, and outputs a signal indicating the determination result.

Once it is determined whether or not to enlarge, a graph drawing command is created according to the result of the determination. When not enlarged,
A graph drawing command is created in the usual way, but when it needs to be enlarged, offset drawing data and omitted display line data are generated, corrections are made to display blank lines between omitted display lines, etc. . That is, depending on the output of the comparison means 7, the selection means 10 selects the output of the offseller 1-calculation means 8 when expansion is required, and selects the standard offset value when it is determined that expansion is not necessary. At the time of enlargement, the graph plotting data generating means 11 creates data for enlarged plotting based on the values calculated by the offsetting section 1 to the calculating means 8, and outputs the data to the plotting data correcting section 13.

I can do it. Furthermore, the scale line drawing data generating means 12 generates data representing two wavy lines for abbreviated display during enlargement, and supplies it to the drawing data correcting means 13.

When the drawing data correction means 3 receives the enlargement determination signal from the comparison means 7, it recognizes that the data from the means 1.1.12 is for enlargement and makes corrections to each data. Taking Fig. 2 as an example, data representing line segment a-b for drawing bar graph D and data representing wavy line A and wavy line B meet intersection points c and d, and drawing data represents line segment a-c. and drawing data representing the line segment d”-b are generated. Therefore, no line can be drawn between c and d, leaving it blank.
By being able to display and draw in this manner, it becomes obvious to those viewing the graph that the graph is enlarged and abbreviated.

(Effects of the Invention) According to the present invention, when the difference between the maximum value and the minimum value of graph data is small compared to the overall size, a graph can be drawn using data with an offset value corresponding to the value of the difference. In addition, the abbreviated display is configured to have two lines and no graph is drawn between the lines, so it is always enlarged appropriately if necessary, and the enlarged display is aesthetically pleasing. Abbreviated graphs can be automatically created without loss.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an example of a graph that is not enlarged. , FIG. 2 is a diagram showing an example of a graph that is enlarged and has an abbreviation line. FIG. 3 is a block diagram showing one embodiment of the present invention. 1. Key manual means, 2. Storage means, 3. Maximum value detection means, 4. Minimum value detection means, 5..
Difference ratio calculation means, 6...Standard data setting means, 7
... Comparison means, 8 ... Standard offset setting means, 9 ... Offset calculation means, 10 ... Selection means, 11 - Graph drawing data generation means, 12 ... Scale line drawing data generation means, 13 ... Plotting Data correction means, 14 Plotter. Figure 1 20.000. −−− ,, − − − − −−
−15.0) Oj − 13α℃ −−−−−−−−−−−−−−−−−−
−−−−−−−−−−−−−−−−−−[−

Claims (1)

[Claims] Key human power means, storage means for storing graph data, means for detecting the maximum and minimum values in the graph data stored in the storage means, and the detected maximum and minimum values. Difference ratio calculation means that calculates the difference in values and calculates the proportion of the difference to the total size. and an enlargement determination means comprising a comparison means for comparing the output of the difference ratio calculation means with a reference value and determining whether or not to enlarge; an offset calculation means for calculating an offset value when creating an enlarged graph; a selection means for selecting whether to output an enlarged offset value or a standard offset value without enlargement, which is output by the offset calculation means, according to the output of the determination means; and from the graph data from the storage means and the selection means. means for generating graph plotting data based on the offsera 1-value of; means for generating plotting data regarding a scale such as an abbreviation line when enlargement is to be performed; A plotting data correction means for creating a graph plotting command based on the data modified for displaying in abbreviated form from the plotting data related to the plotting data, and a plotter for plotting the graph on a sheet in accordance with the graph plotting command. A graphing machine that does this.