Black Box PC118C-R2 manual Bar chart histogram

CHAPTER 7: Advanced Features

Bar Chart (Histogram)—¬GH<line width>;<x start>;<y start>; <x-increment>;<y-increment>;<bar width>;<# of entries>; <value 1>; <value 2>; ...

Draws a bar chart. X,Y start specifies the bottom left-hand corner of the first bar (the origin on the chart’s x,y scale). The x-increment specifies the horizontal movement before the next bar is printed. The y-increment (in n/300 inches) determines the height of the bar (multiplied by the value). The bar width (in n/300 inches) specifies the width of the bar. Bar-chart values can range from 0 to 3000. Each bar will have the color and/or shading specified in the color/shading command. A maximum of 12 bars can be printed in the same chart.

For example: ¬GS3;01;20;02;50;04;80 ¬GH1;100;2400;300;1;100;3;500;600;800 draws three bars. If the attached printer is a PCL color printer, the first bar will be blue, the second red, and the third green. The bars will be shaded 20%, 50%, and 80% respectively, as shown in Figure 7-15.

800)

(

:

600)

50%

(

valueGreen 80%

Red*

ColorShading

value

Bar

3

:

500)

value

2

Shading

Line width

Blue*

20%

Bar

Color

(

value times (*)

Shading

1

:

5mm

Bar

Color

Height =

y increment

x,y start

(100,2400)

x increment = horizontal distance

between values

Figure 7-15. Bar chart (histogram).

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