add_point

add_point( [ChipsId,] xpos, ypos, [,attributes]);

Description

• ChipsId - an optional ChipsId structure containing values to modify the currency state for the command.
• xpos, ypos - the location of the point; the current coordinate system is used if one is not specified.
• attributes - optional parameters which allow the user to configure properties though a structure, list, or attribute string.

The add_point command creates a point whose attributes are specified by user preferences or in an attribute list. The new point becomes current by default; providing a ChipsId overrides the currency state.

The user specifies the location of the point as a coordinate pair (xpos and ypos). This position can be specified in data, pixel, frame, or plot normalized coordinates. Points specified in data coordinates will only be displayed if the are within the coordinate system range.

Customizing the Point

There are several attributes that control the point characteristics. The attributes can be set to the ChIPS defaults, values provided in the add_point command, or values from the user's preference file.

The attributes may also be modified with the set_point command at any time; see "ahelp set_point" and "ahelp setget" for more information.

The attributes associated with points are:

Attribute	Description	Options	Default
angle	Angle at which the point is drawn	-360.0:360.0	0.0
color	color of the point	name or hex; see the Color section of "ahelp chipsopt"	default
coordsys	coordinate system for the point	PIXEL, WINDOW_NORM, FRAME_NORM, PLOT_NORM, DATA	see "ahelp coordsys"
depth	Integer value indicating point depth	see the Depth section of "ahelp chipsopt"	100
fill	fill the point?	false|true; see the Booleans section of "ahelp chipsopt"	true
size	size of the point	1:100	12
stem	stem used for point id	alphanumeric	pnt
style	symbol style	see the Symbol Styles section of "ahelp chipsopt"	cross

chips> add_point(.4,.5);

chips> settings = ChipsPoint;
chips> settings.color = "blue";
chips> settings.size = 18.0;
chips> settings.stem = "MyPoint";
chips> add_point(100,100,settings);

chips> add_point(100,100,{"color", "blue", "style", "uptriangle",
"size", "12" });