27.2.8 Color Mapped Graph

Image135.png

Data Requirements

Select two Y columns of values (or a range from two Y columns). If there is an associated X column, X column supplies X values; otherwise, sampling interval of the Y column or row number is used.

Creating the Graph

Select required data.

From the menu, choose Plot > 2D: Scatter: Color Mapped.

or

Click the Color Map button on the 2D Graphs toolbar.

Color Map 02.png

Template

SCATTER.OTP (installed to the Origin program folder).

Notes

For each row, the two Y column values determine the display of the data point. The leftmost Y column provides the Y data point values. The second Y column controls the data point symbol color. Origin finds the minimum and maximum values in the second Y column, creates eight evenly sized ranges of values between the minimum and maximum values, and then associates a color with each range of values. Each data point color is determined by finding the color associated with the second Y column value in the color map.