Axis 282 User Manual download pdf (Page 28)

Chapter II-12 — Graphs

II-260

Color as f(z) Example

If you have a graph that uses the color as f(z) mode, you may want to create a legend that identifies what

the colors correspond to. This section demonstrates using the features of the Legend operation for this pur-

pose.

Execute these commands, one-at-a-time:

// Make test data

Make /O testData = {1, 2, 3}

// Display in a graph in markers mode

Display testData

ModifyGraph mode=3,marker=8,msize=5

// Create a normal legend where the symbol comes from the trace

Legend/C/N=legend0/J/A=LT "\\s(testData) First\r\\s(testData)

Second\r\\s(testData) Third"

// Make a color index wave to control the marker color

Make /O testColorIndex = {0, 127, 225}

// Change the graph trace to use color as f(z) mode.

// Rainbow256 is the name of a built-in color table.

// The numbers 0 and 255 set the color index values that correspond to the

// first and last entries in the color table.

ModifyGraph zColor(testData)={testColorIndex,0,255,Rainbow256,0}

// Change the legend so that it shows the colors

Legend/C/N=legend0/J/A=LT "\\k(65535,0,0)\\W608 Red\r\\k(0,65535,0)\\W608

Green\r\\k(0,0,65535)\\W608 Blue"

The result is this graph:

-2

-1

-2 -1

0 1 2

3.0

2.5

2.0

1.5

1.0

2.01.51.00.50.0

Red

Green

Blue

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Axis 282 User Manual Page 28