27.2.10 Indexed Size (Bubble) and Color Map Graph


Bubble Graph with Color Map.png

Data Requirements

Select three Y columns of values (or subranges from three 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 > Basic 2D : Bubble + Color Mapped.

or

Click the Bubble + Color Mapped button on the 2D Graphs toolbar.

Bubble and color map 02.png

Template

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

Notes

For each row, the three 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 size in units of points. The third Y column controls the symbol color. Origin finds the minimum and maximum values in the third Y column, creates eight evenly sized ranges of values between the minimum and maximum values, and then associates a color with each value in the range. Each bubble color of a data point is determined by finding the color associated with the third Y column value in the colormap.

By default, a bubble scale will be added to the bubble + color map graph upon creation and works as a legend. And you can also add a color scale to such graph in order to show the color mapping information.