If your data is XYZ data, not matrix data, you'd better use Origin 8 to draw isotherms graph. In Origin 8, Activate the worksheet, from Main Menu, Select Plot: Contour: XYZ Contour. Origin's previous versions only support matrix data to draw contour graph. So you have to convert your worksheet data to matrix data first. Activate the worksheet, from main menu, Select Edit: Convert to Matrix: Direct. Then Select Plot: 3D Surface/Contour Plots.
to draw Isotherms
Posted - 09/16/2009 : 06:35:27 AM
