GPOINT Call

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Language Reference

GPOINT Call

plots points

CALL GPOINT( x, y<, symbol><, color><, height><, window>

<, viewport>);

The inputs to the GPOINT subroutine are as follows:

x

is a vector containing the x coordinates of points.

y

is a vector containing the y coordinates of points.

symbol

is a character vector or quoted literal that specifies a valid plotting symbol or symbols.

color

is a valid SAS color, where color can be specified as a quoted text string (such as 'RED'), the name of a character matrix containing a valid color as an element, or a color number (such as 1). A color number n refers to the nth color in the color list.

height

is a numeric matrix or literal specifying the character height.

window

is a numeric matrix or literal specifying a window. This is given in world coordinates and has the form

{minimum-x minimum-y maximum-x maximum-y}

viewport

is a numeric matrix or literal specifying a viewport. This is given in normalized coordinates and has the form

{minimum-x minimum-y maximum-x maximum-y}

The GPOINT subroutine marks one or more points with symbols. The x and y vectors define the points where the markers are to be placed. The symbol and color arguments can have from one up to as many elements as there are well-defined points. The coordinates in use for this graphics command are world coordinates.

In the example that follows, points on the line Y=X are generated for $30 \leq X \leq 80$ and then plotted with the GPOINT call:

   x=30:80;
   y=x;
   call gpoint(x,y);
   call gshow;

As another example, you can plot symbols at specific locations on the screen using the GPOINT subroutine. To print i in the lower left corner and j in the upper right corner, use the statements

   call gpoint({10 80},{5 95},{i j});
   call gshow;

See Chapter 12, "Graphics Examples," for examples using the GPOINT subroutine.

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