## Scatter Plots

This section describes how to draw a scatter plot and refine the display with controls over colors and axis labels. The commands are:

`set gxout scatter
display exp1;exp2<;exp3>`

Where:

`exp1` A grid expression that determines the position of the scatter points on the X axis
`exp2` A grid expression that determines the position of the scatter points on the Y axis
`exp3` A grid expression that determines the color of the points in the scatter plot (GrADS version 2.0.2+)

### Usage Notes

The third argument to control the colorization of the points in the scatter diagram is new in GrADS version 2.0.2. Use `set clevs` and `set ccols` to control the range of values and color for each level. When using colorization of the scatter plot, if any of the color numbers is < 0, no points will be drawn for that level.

After a display of a scatter plot, GrADS will return four numbers: the min and max of the X axis values, followed by the min and max of the Y axis values.

Use the `set vrange` command to specificy the min and max of the X axis values if you do not wish to use the defaults that GrADS selects.
Use the `set vrange2` command to specificy the min and max of the Y axis values if you do not wish to use the defaults that GrADS selects.