%SCALE

%SCALE

Scales input coordinates (ptx, pty) from a range of the minima (x1, y1) and maxima (x2, y2) to a range of minima (vx1, vy1) and maxima (vx2, vy2).

Variables affected: X, Y

Syntax
Details

Syntax

%SCALE (ptx, pty, x1, y1, x2, y2 , vx1, vy1, vx2, vy2);

Parameter Description

ptx, pty numeric variables; the coordinates to scale.

x1, y1 numeric constants; the minima of the original range.

x1, y2 numeric constants; the maxima of the original range.

vx1, vy1 numeric constants; the minima of the new range.

vx2, vy2 numeric constants; are the maxima of the new range.

Details

The SCALE macro reduces or enlarges Annotate graphics. It scales only graphics elements that use two-dimensional, numeric coordinates. The SCALE macro does not affect graphics elements that are drawn with text functions.

The difference between the SCALE and SCALET macros is that the SCALE macro always places the origin at (0, 0) and plots the new coordinates with respect to that origin. The SCALET macro plots the new coordinates with respect to (vx1, vy1). This SCALE macro reduces x and y coordinates by 50 percent as shown in Using the SCALE Macro to Reduce the Size of a Box:

%SCALE(x, y, 0, 0, 100, 100, 0, 0, 50, 50);

Using the SCALE Macro to Reduce the Size of a Box

[IMAGE]

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*Parameter*	Description
*ptx, pty*	numeric variables; the coordinates to scale.
x1, y1	numeric constants; the minima of the original range.
x1, y2	numeric constants; the maxima of the original range.
vx1, vy1	numeric constants; the minima of the new range.
vx2, vy2	numeric constants; are the maxima of the new range.