Step by step

  1. Load a filtered peak file (.flt) from peaksearch program.
  2. Load a parameter file.
  3. Compute : select you functionalities and launch computation : choose compute tth eta, add unit cell peak, gve, tth histo.
  4. View Plot
  5. Fit

Select Filtered peaks file (.flt)

You can select a filtered peak in Transform View or in menu Calibration -> Open filtered file.

Select parameters file (.par, .prm, .prms ..)

Parameter file is used to calibrate your sample distance with detector (see transform.py ). You can select a parameter file in Parameters View or in menu edit/preferences, select Calibration : browse a file. If file syntax is right , fields are created in the view and data are displayed in the fields. By default, fable application gets a file 'fable.par' with default values (the same as we can find in python code), available in you product. You MUST use the values for pixel size recorded in the spline file if you have made a spatial distortion for things to work out properly.

Plot

yellow arrow If all options are right (required fields, values are correct),you can make a plot of two theta / eta and then add unit cell peaks.

In this plot view, you can also keep/remove dots in the hidden part of plot options:

Save flt file, gve file

Once your computation have been done, transform view allows you to save your new filtered peaks file with new computed data.=, and your g-vector file in grou "save file".

Save parameters in a file

You have the ability to sabe your parameters in a file (see screen shots below)and to set it as preferences (see calibration preferences)