JPS6040299A - Hatching method in drawing machine - 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 [Technical field to which the invention pertains] The present invention relates to a hatching method in a drawing machine. To be more specific, when drawing a bar graph or pie graph using a drawing machine and adding hatching to it,
This invention relates to a method that allows this hatching operation to be performed quickly.

[Description of prior art]

BACKGROUND ART Today, when drawing graphs, etc., it has become common to use plotting machines instead of manually. Generally, when graphing data, it is effective to add hatching to bar graphs, pie charts, band graphs, etc. to make them easier to see.

Although hatching can also be applied when drawing with a drawing machine, the operation of applying hatching by a conventional method will be explained with reference to FIG.

For example, when drawing a bar graph, in the conventional method, the frame of the bar graph is first drawn, and then the hatching part is drawn, but this operation is performed in the following order.

■ Hold the pen of the drawing machine up and move to point 81, then turn it down.

■ Move to point 64 and raise the pen there. Raising and lowering the pen is usually done using an electromagnet (solenoid).

■ Next, move the pen to point 82, lower the pen there, and move the pen to point b2.

By repeating the above operations, hatching in the bar graph is performed. However, the above method has the following drawbacks.

(1) When high-speed graphing is required, it is necessary to increase the pen speed, but also to shorten the time required for the pen to move up and down. However, if the pen goes down, the solenoid's time constant (usually a few m5
ec ~ several 101 TI 8 e C), and the pen descends to the paper surface and bounces, so the time it takes for the vibration to subside (several m5 eC to several 10 m5 eC) is required to hold the pen at that point without moving the position. Na() must be.

Therefore, the more times the pen moves up and down, the more time it takes.

(2) Since the pen is moved up and down mechanically, the noise at the solenoid and pen part is large (3) Over the life of the solenoid, the pen tip will wear out due to the impact when it goes down.

[Object of the present invention]

The present invention has solved these problems, and its purpose is to provide a method that can speed up hatching, eliminate noise during hatching, and extend the life of pen tips and solenoids. It is about providing.

[Summary of the invention]

The present invention achieves the above object by performing the hatching operation in one stroke (after lowering the pen for the hatching operation, the pen is moved up to create a series of hatching lines). It was designed to do so.

[Explanation based on examples]

The present invention will be explained below using the drawings.

FIG. 2 is a diagram for explaining the operation of the hatching method in the drawing machine according to the present invention.

First, draw the frame F, and then do the hatching as follows.

■ Move the pen up to point 81 and move it I/L, then move the pen down. ■ Move the pen to draw line L1 shown in Figure 2.

■Next, change the direction of movement of the pen and draw line L2.

However, since the line L2 was already drawn when the frame F was drawn, here it is drawn by tracing over it.

■ From now on, by changing the direction of movement of the pen without raising the pen, lines L3, L4, L5, etc.
Draw...

Here, when drawing the lines L I , L2 , L3 , etc., the drawing machine automatically calculates a line connecting the two points when the coordinates of the start and end points of each line are specified.
You can draw that line. This function is not particularly new and is a well-known technology, so it will not be described in this specification.
The explanation of its operation will be omitted.

Note that in the above explanation, when drawing a graph, the frame of the graph is drawn first, but the frame may be drawn later.

Further, although the above description has been made using the case of general hatching as an example, the present invention can also be applied to a case where the hatching lines are made dense to fill in the inside of a graph. However, in this specification, the concept of hatching includes filling.

[Effects of the present invention]

As described above, according to the present invention, once hatching begins, the pen remains down, and a series of hatching lines is drawn in a so-called brush writing state, which eliminates the problems encountered in the conventional method described above. All can be solved.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining the operation of the conventional hatching method, and FIG. 2 is a diagram for explaining the operation of the hatching method according to the present invention.

Claims (1)

[Claims] In a method of hatching using a plotting machine capable of drawing various graphs by turning the up/down mechanism of a pen, when the pen is lowered to draw a hatching line,
A method of hatching on a drawing machine in which a series of hatching parts are drawn in a so-called stroke-by-stroke manner.