JPS61228494A - Trend graph display - 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 This invention relates to a trend graph display method for displaying a plurality of types of processed data as a trend graph on a plurality of output lines on an image display device.

BACKGROUND ART FIG. 4 is a diagram showing an image display of a trend graph in a conventional example. When multiple output lines are displayed close together or intersecting as shown in this figure, it is difficult to distinguish between each output line if they are displayed in a single color, and if each output line is displayed in different colors, it will be difficult to distinguish between them on the screen. Discrimination is easy, but if the display screen is printed and recorded in a single color, discrimination becomes difficult.

Problems to be Solved by the Invention Printers capable of printing and recording in multiple colors are expensive, and monochrome recording printers are generally used when printing and recording the display contents of CRT images.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a trend graph display method that makes it easy to distinguish between a plurality of output lines of a trend graph both on a display screen and when printed in a single color.

Means for Solving the Problems The trend graph display method of the present invention includes determining a discrimination symbol for each output line indicating a plurality of types of processed data, and predetermining each discrimination symbol on each corresponding output line. This is characterized in that they are arranged at equally spaced positions in the coordinate axis direction.

According to this invention, a discrimination symbol is determined for each output line,
Discrimination symbols are placed on each output line at equally spaced positions in the direction of the predetermined coordinate axes, so even if the output lines in the trend graph are close to each other or intersect, they can be easily distinguished using the discrimination symbols. be able to.

Embodiment FIG. 1 is a block diagram showing an example of an information processing system in which the present invention can be implemented.

A plurality of types of measurement data are input to a data processing device l. The data processing device l includes a central processing unit CPU, an input/output interface I10 that inputs and outputs data, a read-only memory ROM that stores programs, a random access memory RAM that stores processing data, and a CR7 display. CRT controller C that controls device 2
Contains C. Measurement data input to the data processing device 1 is processed and displayed on the CR7 display device 2 as a trend graph. The displayed contents are printed and recorded by the printer 3 as necessary.

FIG. 2 shows an example of a trend graph displayed on the CR7 display device 2. In this embodiment, the discrimination symbol for the output line La is "0", the discrimination symbol for the output line Lb is "Δ", and the output The discriminating symbol for line Lc is "mouth", and the positions where each discriminating symbol 0.63 mouth are displayed are set at equal intervals in the horizontal axis direction indicating time, and each discriminating symbol ○, Δ.

The mouths are output at the same time, shifted so that they do not overlap.

FIG. 3 is a flowchart showing processing operations when displaying a trend graph as an image. In step n1, a trend graph frame (vertical axis, horizontal axis, scale) is displayed.

At step n2, the data stored in the memory is read out and scaled according to the scale of the vertical axis. In step n3, an output line is drawn one dot at a time from the starting point of the horizontal axis based on the scale-converted data. In step n4, the output line reaches the position where the discrimination symbol should be output based on the number of dots output. When the output line comes to the position where the 0 discriminating symbol should be output, the process moves to step n5 and the discriminating symbol is output on the output line. In the embodiment of FIG. 2, each output line L is
Discrimination symbols of 0.68 are displayed on a, Lb, and Lc at positions shifted from each other in the horizontal axis direction. step n
In step 6, it is determined whether all data has been output, and if the output has not been completed, steps n2 to n5 are repeated.

In this invention, since a trend graph is displayed as shown in FIG. 2, even if multiple output lines are close to each other or intersect, regardless of whether the display is monochrome or multicolor, the discrimination on the line can be made. This can be easily done using symbols. Furthermore, even if the trend graph is printed in a single color by a printer, it is easy to distinguish between a plurality of output lines.

Effects of the Invention According to the present invention, it is easy to distinguish between a plurality of output lines of a trend graph, whether it is displayed as an image or recorded as a print.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of an information processing system that can implement the present invention, FIG. 2 is a diagram showing an image display of a trend graph according to the invention, and FIG. FIG. 4 is a flowchart showing the processing operation, and is a diagram showing an image display of a trend graph in a conventional example. 1... Data processing device, 2... CRT display device, 3
...Printer, La-Lc...Output line Figure 1 Figure 2! g Figure 3

Claims (1)

[Claims] In a method for displaying multiple types of processed data as a trend graph on a plurality of output lines on an image display device, a discrimination symbol is determined for each output line, and each discrimination symbol is predetermined on each corresponding output line. A trend graph display method characterized by arranging trend graphs at equally spaced positions in the coordinate axis direction.