RUN

Runs the named program. If your program name contains

 

special characters, such as a space, then you must enclose the

 

file name in double quotes (" ").

 

RUN "program name" or RUN programname

STOP

Stops the current program.

 

STOP

Drawing commands

The Drawing commands act on the display. The scale of the display depends on the current aplet’s Xmin, Xmax, Ymin, and Ymax values. The following examples assume the HP 39G/40G default settings with the Function aplet as the current aplet.

ARC

Draws a circular arc, of given radians, whose centre is at (x,y)

 

The arc is drawn from start_angle_measurement, and

 

end_angle_measurement.

 

ARC x;y;radius;start_angle_measurment;

 

end_angle_measurment:

 

Example

 

ARC0;0;2;0;360:

 

 

 

 

 

FREEZE:

 

 

 

Draws a circle centered

 

 

 

at (0,0) of radius 2. The

 

 

 

FREEZE command

 

 

 

causes the circle to

 

remain displayed on the screen until you press a key.

BOX

Draws a box with opposite corners (x1,y1) and (x2,y2).

 

BOX x1;y1;x2;y2:

 

Example

 

BOX -1;-1;1;1:

 

 

 

 

 

FREEZE:

 

 

 

Draws a box, lower

 

 

 

corner at (–1,–1), upper 

 

 

 

corner at (1,1)

 

 

ERASE

Clears the display

 

ERASE:

Programming

15-19

Page 225
Image 225
HP 40G manual Drawing commands