SetData Method

The SetData procedure method allows you to programatically replace a graphic's existing data with the specified data. When the SetData method is called, the graphic window is immediately updated to display the new data.

Coordinate Systems

For the Arrow, Polygon, Polyline, and Symbol graphics, if the graphic is created in data coordinates (with the DATA keyword), then data coordinates should be supplied to the SetData method. If the graphic is created in device coordinates (with the DEVICE keyword) or normalized coordinates (with the NORMAL keyword, the default value for creation), then normalized coordinates should be supplied to the SetData method. The ConvertCoord Method may be used to convert values from one coordinate system to another.

Example

TEMP1=RANDOMU(SEED,12) * 100

TEMP2=RANDOMU(SEED,12) * 100

DAY=FINDGEN(12) * 30 + 15

p = PLOT(DAY, TEMP1, 'Db-1', $

TITLE = 'Temperature', $

XTITLE = 'Day of Year', $

YTITLE = 'Degrees Fahrenheit')

p.SetData, DAY, TEMP2

Syntax

graphic.SetData, Argument₁, Argument₂, ... Argument_n[, CONNECTIVITY=value] [, /ORDER]

The arguments to the SetData method should be specified in the same manner as the function call used to create the graphic.

Arguments

The input arguments depend on the graphic being modified and the number of arguments supplied. The form of the arguments is similar to the arguments supplied for the creation of the graphic.

Graphic	1 Arg	2 Args	3 Args	4 Args	Keywords	Coordinates
Arrow		X, Y				NORMAL unless created with /DATA
Barplot	Y	X, Y				DATA
Boxplot	Values	Locations, Values				DATA
Bubbleplot		X, Y				DATA
Contour	Z		Z, X, Y			DATA
Errorplot		Y, Yerror	X, Y, Yerror	X, Y, Xerror, Yerror		DATA
Fillplot	Y	X, Y				DATA
Image	Image		Image, X, Y		ORDER	DATA
Plot3D			X, Y, Z			DATA
Plot	Y	X, Y				DATA
Polarplot	Theta	R, Theta				DATA
Polygon		X, Y	X, Y, Z		CONNECTIVITY	NORMAL unless created with /DATA
Polyline		X, Y	X, Y, Z		CONNECTIVITY	NORMAL unless created with /DATA
Scatterplot		X, Y				DATA
Scatterplot3D			X, Y, Z			DATA
Streamline		U, V		U, V, X, Y		DATA
Surface	Z		Z, X, Y			DATA
Symbol		X, Y				NORMAL unless created with /DATA
Vector		U, V		U, V, X, Y		DATA
Volume	Vol0	Vol0, Vol1		Vol0, Vol1, Vol2, Vol3		DATA

Keywords

CONNECTIVITY

This keyword applies only to the POLYLINE and POLYGON graphics, and is identical to the CONNECTIVITY keyword for the POLYLINE and POLYGON functions.

ORDER

This keyword applies only to an IMAGE graphic. Set this keyword to force the rows of the image data to be drawn from top to bottom. By default, image data is drawn from the bottom row up to the top row.

Version History

8.1	Introduced