29.19.2 Image Plot

Image-Plot

Data Requirements

A matrix of Z values. The data may have originated from a raster image.

Creating the Graph

Click on the matrix to activate it.

From the menu, choose Plot > Contour : Image Plot.

or

Click the Image Plot button on the 3D and Contour Graphs toolbar.

Template

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

Notes

• The default X and Y axis range is determined by the coordinate range of the matrix, which in an image, is the X and Y pixel range. The View:Show X/Y menu will display the X and Y values in the matrix.
• In image plots of matrix data (e.g. an image plot of geographic data), layer size is a function of the ratio between X_max - X_min and Y_max - Y_min and the layer's Link Axis Length to Scale with X:Y Ratio option is set to 1, by default.