Tools2D

Data reduction of two-dimensional images in HDF5 (Dectris and various ESRF flavours) or EDF format. Routines for data conversion are available.

Features:

• Conversion from EDF to HDF5
• Conversion from HDF5 to EDF
• NOTE: it is possible to create in this way multi-edf files. It is however currently not foreseen to create multi HDF5 files.
• Averaging, subtraction and division of each two files using saxs programs is foreseen, as well.

Specific Features:

Two different data reduction routines exist:

EDF REDUCTION

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• This routine is based on spd / saxs programs.
• Normalization, azimuthal regrouping and output of ASCII files can be selected individually.
• Input format can be EDF or HDF5.
• An approximated variance calculation can be activated.
• The mask information is either taken from a header key ('default') or by a file selection in S2. In any case the mask file must be present in the working directory.
• The integration range can be restricted.

Typical application: partial azimuthal integration in a reduced angular range

NOTE: This can be also applied to files from the HDF5 REDUCTION pipeline !!

starting from normalized data ('norm')

• Select normalized images in Selection S1.
• Make sure that 'regrouping', 'output ASCII' and 'restrict integration' are all checked.
• Make sure the mask file is present in the working directory. The correct mask file is most of the time determined automatically ('apply mask' checked; 'default' selected).
• Choose if you want to calculate (A) I(q) averaged in a certain angular range or (B) I(angle) averaged in a certain q range.
• In case of (A): specify angular range. Negative angles are possible [-5 , 5]deg.
• In case of (B): specify q range in pixel coordinates (use plot2D with array coordinate system for selection).
• Click 'start data reduction'.

starting from zimuthally regrouped data ('azim' or 'ang')

• Select azimuthally regrouped images in Selection S1.
• Make sure that 'regrouping' is not checked, 'output ASCII' and 'restrict integration' must be checked.
• No mask file is necessary in this case.
• Choose if you want to calculate (A) I(q) averaged in a certain angular range or (B) I(angle) averaged in a certain q range.
• In case of (A): specify angular range. Negative angles are possible [-5 , 5]deg.
• In case of (B): specify q range in pixel coordinates (use plot2D with array coordinate system for selection).
• Click 'start data reduction'.

HDF5 REDUCTION

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• This routine is based on dahu / PyFAI