4.6 GEMSQRAW: I2T
The program I2T is intended to Fourier transform diffraction data to obtain the pair distribution function:
The input workspace should contain the distinct scattering i(Q). In practice the input should be on a Q-axis and should oscillate about a value of zero - subtract a suitable constant from your data to achieve this.
If a workspace called data contains i(Q) then its Fourier transform may be calculated by typing this:
This will put T(r) (or D(r)=T(r)-T0(r) ) into the workspace called ft.
It is not necessary for the input workspace to be put on a constant delta-Q scale. However, should you wish to do this then use a command like the following example...
Last updated on 18 Sep 2002 by Alex Hannon (email@example.com)