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Convert And Plot Data In Multifit

Conversion to Multifit format

Once your macro has run. You will have to convert those CHI files to the internal multifit format. Return to multifit and select the Data handling -> Convert CHI to IDL: multiple sets menu item and, once again, fill up the form!

Converting chi files into Multifit format

For each image (e.g. test_0003), it will read the corresponding chi files (e.g. test_0003_0.chi to test_0003_360.chi) and store them in a binary file with a idl extension (e.g. test_0003.idl).

Loading the data in Multifit

To load the data into into Multifit, select the Input files -> Multiple input files menu item and fill up a form as described below

Load data in multifit

This example will load data from D0607_005.idl to D0607_184.idl. The file loaded will appear in the Active datasets panel of the main window.

Plotting the data: Mapplot

To plot a dataset in as color contours, select the set to plot, and hit the Mapplot button below the file list, and you'll get something like this

Mapplot

Plotting the: 2-D plot

To plot a dataset in 2-D, select the set to plot, and hit the Plot button. You will have a dialog window with options to choose

• azimuth values for which to plot the diffractograms
• a stretch factor (larger values will bring the plots together)
• how often to label azimuth angles
• the 2 theta range

Play around with the parameters and you should be able to plot something like this

2-D plot