A matrix of Z values. The data has been imported from a raster image.
Click on the matrix to activate it.
From the menu, choose Plot > Contour : Image Plot.
Click the Image Plot button on the 3D and Contour Graphs toolbar.
IMAGE.OTP (installed to the Origin program folder).
The default X and Y axis range is determined by the coordinate range of the matrix, which is the same as the image's X and Y pixel range. The View:Show X/Y menu will display the X and Y values in the matrix.