.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.47.4.
.TH DIFF_TOMO "1" "February 2018" "diff_tomo from pyFAI version 0.15.0: 30/01/2018" "User Commands"
.SH NAME
diff_tomo \- manual page for diff_tomo from pyFAI version 0.15.0: 30/01/2018
.SH DESCRIPTION
usage: diff_tomo [options] \fB\-p\fR ponifile imagefiles*
.PP
Azimuthal integration for diffraction tomography. Diffraction tomography is an
experiment where 2D diffraction patterns are recorded while performing a 2D
scan, one (the slowest) in rotation around the sample center and the other
(the fastest) along a translation through the sample. Diff_tomo is a script
(based on pyFAI and h5py) which allows the reduction of this 4D dataset into a
3D dataset containing the rotations angle (hundreds), the translation step
(hundreds) and the many diffraction angles (thousands). The resulting dataset
can be opened using the PyMca ROItool where the 1d dataset has to be selected
as last dimension. The output file aims at being NeXus compliant. This tool
can be used for mapping experiments if one considers the slow scan direction
as the rotation. but the *diff_map* tool provides in addition a graphical user
interface.
.SS "positional arguments:"
.TP
FILE
List of files to calibrate
.SS "optional arguments:"
.TP
\fB\-h\fR, \fB\-\-help\fR
show this help message and exit
.TP
\fB\-V\fR, \fB\-\-version\fR
show program's version number and exit
.TP
\fB\-o\fR FILE, \fB\-\-output\fR FILE
HDF5 File where processed sinogram was saved, by
default diff_tomo.h5
.TP
\fB\-v\fR, \fB\-\-verbose\fR
switch to verbose/debug mode, defaut: quiet
.TP
\fB\-P\fR FILE, \fB\-\-prefix\fR FILE
Prefix or common base for all files
.TP
\fB\-e\fR EXTENSION, \fB\-\-extension\fR EXTENSION
Process all files with this extension
.TP
\fB\-t\fR NTRANS, \fB\-\-nTrans\fR NTRANS
number of points in translation. Mandatory
.TP
\fB\-r\fR NROT, \fB\-\-nRot\fR NROT
number of points in rotation. Mandatory
.TP
\fB\-c\fR NDIFF, \fB\-\-nDiff\fR NDIFF
number of points in diffraction powder pattern,
Mandatory
.TP
\fB\-d\fR FILE, \fB\-\-dark\fR FILE
list of dark images to average and subtract
.TP
\fB\-f\fR FILE, \fB\-\-flat\fR FILE
list of flat images to average and divide
.TP
\fB\-m\fR FILE, \fB\-\-mask\fR FILE
file containing the mask, no mask by default
.TP
\fB\-p\fR FILE, \fB\-\-poni\fR FILE
file containing the diffraction parameter (poni\-file),
Mandatory
.TP
\fB\-O\fR OFFSET, \fB\-\-offset\fR OFFSET
do not process the first files
.TP
\fB\-g\fR, \fB\-\-gpu\fR
process using OpenCL on GPU
.TP
\fB\-S\fR, \fB\-\-stats\fR
show statistics at the end
.PP
If the number of files is too large, use double quotes "*.edf"
.SH "SEE ALSO"
The full documentation for
.B diff_tomo
is maintained as a Texinfo manual.  If the
.B info
and
.B diff_tomo
programs are properly installed at your site, the command
.IP
.B info diff_tomo
.PP
should give you access to the complete manual.