Provided by: dioptas_0.5.2-4_amd64 
NAME
dioptas - Dioptas Documentation
1 INTRODUCTION
Dioptas is a GUI program for fast integration and exploration of 2D X-ray diffraction
Images. It provides the capability of calibrating, integrating, creating masks, showing
multiple pattern overlays and display phases line positions. The basis of the integration
and calibration algorithm is the pyFAI library. The usage of pyFAI allows integration
times on the order of 80 milliseconds and calibration of every possible detector geometry.
Dioptas has three different modules which can all be accessed by the tab indicators on the
left side of the user interface: Calibration, Mask, Integration.
The Calibration module enables you to calibrate the detector geometry. Within the Mask
module you can select regions you want to exclude from the image integration and the
Integration module is the heart of Dioptas, where you will spend most time for data
exploration. It shows both, the image and integrated pattern, and one can overlay
different pattern and show line position of phases.
[image] Location of module selectors..UNINDENT
1.1 Mouse Interaction in the Image and Pattern Widgets
The basis for data exploration in are the image and pattern widgets available in all 3
modules. The interaction with these widgets is tried to be as intuitive as possible,
without extra need of different selection modes. All widgets support to following mouse
commands:
•
Left Click:
Action depends on the module you are in. In the calibration view it will search
for peaks. In the Mask view it is the primary tool for creating the geometric
objects used to build up the mask and in the integration view it draws a line at
the current two theta value.
•
Left Drag:
Zooms into the selected area. It will try to scale images accordingly, but will
not perfectly zoom in to the selected area, because pixels are kept as square
objects on the screen.
•
Right Click (Command+Right Click on Mac):
Zoom out.
•
Right Double Click (Command + Right Double Click on Mac):
Completely zoom out.
•
Mouse Wheel:
Zoom in and zoom out based on the current cursor position.
1.2 Image Color Scale and Contrast
Every image widget has a color bar and a histogram either on the side of the image (Mask
module and Calibration Module) or on the top (integration module). The colors of the
color bars can be easily adjusted. You can switch to a completely different color-scale
by right clicking the color bar. This creates a pop-up where one of the predefined color
scales can be selected. The position of the individual colors can be adjusted by dragging
the triangle of this color. Further the colors can be changed completely by double
clicking (left) it, which will pop up a color chooser. It is in addition also possible to
add a complete new color by double clicking (left) next to the color bar. The histogram
next to the color bar shows the intensity distribution of the loaded image on a log scale.
The sliders two lines define the scaling of the image in the image view. Please feel free
to adjust their position by dragging them.
2 CALIBRATION PROCEDURE
Make sure you are in the calibration mode, which should be selected on the left side of
the window.
2.1 Preparation
Load the calibration image by clicking the "Load file" button on the upper right side of
the window. Now you can insert the starting values for the calibration in the menu on the
right. The calibration procedure will estimate distance and center position of the x-ray,
as well as detector rotation. For this procedure the wavelength and pixel width/height
have to be defined based on the experimental setup and detector used. Please choose the
correct calibrant from the Calibrant drop-down list. In case your calibrant is not
available, your own calibrant can be added in the dioptas/calibrants folder as a text file
containing a list of d-spacings, Dioptas will automatically have this calibrant available
in the combobox after a restart. Different detector orientations can be accommodated by
rotation or flipping the image. These image transformations will be applied to all
subsequent loaded images in the calibration module and in the integration module.
[image] Start values for calibration.UNINDENT
2.2 Peak Picking
In order for Dioptas to find the correct geometry it needs an initial guess for the
position of some of the rings. This is done by selecting several peaks on each
diffraction ring. The parameters for peak selection are given in the "Peak Selection"
section on the right site of the calibration module, when "Calibration Parameters" is
selected.
[image] Peak Selection Options.UNINDENT
By default automatic peak search is selected, which tries to automatically find peaks on
a clicked ring. To search on the first ring please click on it with the left mouse
button. In case it is very difficult to "hit" the ring with the mouse you can just zoom
in by using the drag-zoom or mouse-wheel zoom. If the peak search was successful it
should look like this:
[image] LaB6 2D diffraction image with the first ring selected..UNINDENT
If the automatic peak searching fails (when Dioptas fails to select other peaks on the
first diffraction ring) there are several available options:
• perform the automatic peak search on a different ring.
• change the "Current Ring Number"
• and select the a peak on this ring
•
choose single peak search , which will search the highest intensity peak around the
click position, whereby the
size of the search area is defined byt the search size
• then search one peak for one diffraction ring (the current peak number will
automatically increase)
• or deselect the automatic increase checkbox and click several spots on the first ring,
or any ring you like (with the corresponding peak number selected)
2.3 The Calibration and Refinement Process
After the peaks/ring(s) have been selected we can start the calibration procedure. This
is done by clicking the "Calibrate" Button on the lower left of the interface. This will
calculate the geometric parameters based on the current peak selection and then
automatically refine the calibration parameters.
After refinement Dioptas will automatically create a 360 degree cake image and an
integrated pattern. When the procedure is finished it will jump to the "Cake" tab (top
tab-bar above the image) and show the cake image. In this image you can easily check if
the calibration was successful (by checking if the cake lines are straight).
Additionally, the pattern is plotted with calculated calibrant positions in the "Pattern"
Tab. All peak maxima should coincide with phase line positions. The resulting
calibration parameters are shown by clicking the pyFAI parameters or Fit2d Parameters tabs
in the right control panel. The current calibration parameters can be saved by clicking
the Save Calibration button on the lower right of the user interface. To fast reuse the a
calibration, the calibration can be reloaded by clicking Load Calibration.
If the calibration failed, either the start values are wrong, the initial peak selection
was faulty or the refinement parameters need to be adjusted. For a new peak selection,
just click "clear all peaks" and start the the peak selection again, make sure that
current peak number belongs to the corresponding clicked ring. The meaning of each of the
refinement options are explained in the next section.
2.3.1 Refinement Options
The refinement options are defined on the right control panel of the Calibration module,
when "Calibration Parameters" is selected.
[image] Available options for calibration refinement.UNINDENT
There are several options available:
•
automatic refinement:
Defines if Dioptas should search for peaks by itself after using the initially
selected peaks. When this option is deselected only the selected peaks are used
for calculating the detector calibration.
•
use mask/transparent:
The refinement can be constraint to a certain image area by using a mask
previously defined in the mask module. The image of the mask can be made
transparent to be able to "look behind"
•
Peaksearch algorithm:
The algorithm used for searching peaks on the ring. The standard algorithm is
"Massif" although "Blob" detection may give better results in some cases.
•
Delta 2th:
This is the +- search range used for automatic peak search for each ring. The
center value depends on the values, estimated by the calibration procedure, so
ultimately by the initial choice of predefined peaks (Peak selection)
•
Intensity Min factor:
This factor determines how many times the peak intensity has to be higher than
the mean value of the search area (within the delta 2th value) for each
individual ring. The lower this value is the more peaks will be selected,
however, also the likelihood of selecting wrong background peaks increase. The
default value is 3, which is good for rather spotty patterns. If your
calibration image has perfect diffraction rings, this value needs to be reduced
to about 1-1.5.
•
Intensity Max:
A threshold value which excludes all peaks above this value. The default value
is 55000 which is good for 16 bit detectors. In case a detector with more levels
is used this value needs to be adjusted.
•
Number of rings:
The number of rings on which peaks are searched. This should be chosen based on
the number of visible rings in the calibration image. For an optimal calibration
all visible rings should be used.
If the calibration/refinement fails you can in principle play with all parameters.
However, the most common adjustments are the number of rings and the Intensity Min factor.
3 MASK CREATION
In the mask module areas can be defined which will be excluded from integration or
calibration. There are several geometries available to select different kind of areas.
Additionally it is possible to mask based on threshold values and perform automatic cosmic
removal. All tools are available on the right control panel in the Mask view. It can be
either chosen to mask a certain region or unmask it (select either on the top of the
control panel).
[image] The Mask module of Dioptas..UNINDENT
3.1 Selection Tools
To select a specific geometry just click on it and an orange border will show which one is
active right now. All geometric shapes are created by using left clicks:
•
Circle:
The first click defines the center of the circle and the second the radius of the
circle.
•
Rectangle:
The first click defines one corner and the second the corner on the opposite
side.
•
Point: A click will mask an area as large as the circle floating around the mouse
pointer. The size of the circle can be changed by changing the value next the
the Point button or using just pressing the q and w keys.
•
Polygon:
Subsequent clicks will define edges of the polygon. A double click will close
the polygon (and add the position of the double click as last point to the
polygon)
•
Arc: The first 3 clicks define a circle section and the 4th click defines the
thickness of the arc.
3.2 Threshold Masking and Cosmic Removal
In order to do threshold masking, please insert the wanted number next to the desired
Thresh button and click the button.
Cosmic removal is an automatic optimization procedure trying to mask cosmic rays from the
image. This procedure can take considerable amount of time, please be patient.
3.3 Control Buttons
•
Grow: Grows the current mask by one pixel in all directions.
•
Shrink:
Shrinks the current mask by one pixel in all directions.
•
Invert:
This will invert the mask so that unmasked areas become masked and vice versa.
•
Clear: This will remove the complete mask.
•
Undo/Redo:
Enabling to undo the last action or redo them. You can undo up to 50 actions.
3.4 File Handling
•
Save Mask:
Saves the current mask as a tiff file with intensities being 1 for masked areas
and 0 for unmasked areas.
•
Load Mask:
Loads a previously saved mask. Clears the current mask before.
•
Add Mask:
Loads a previously saved mask and adds it to the current mask.
4 INTEGRATION MODULE
The integration module is the heart of Dioptas. Here you can automatically integrate
multiple images to pattern, browse between images and integrated pattern, compare multiple
pattern to each other, perform background subtraction and compare pattern peak positions
and intensities to the ones of known phases.
[image] The integration module of Dioptas..UNINDENT
In the integration module the current image is displayed on the left side with the
integrated pattern shown on the lower right. The control panel has several tabs for
different functions.
The "Img" and "Pattern" tabs are primarily for loading and browsing images and pattern,
respectively. In the "Overlay" tab integrated pattern can be loaded for comparing them
to the currently loaded shown active pattern. The "Phase" tab enables opening/editing
jcpds files and changing the equation of state parameters of the loaded phases. The
"Cor" tab gives options for performing intensity corrections. Here the absorption of a
c-BN seat and diamond in a diamond anvil cell, or the detector scintillator can be
corrected prior to integration. The controls in the "Bkg" tab can be used to define an
image as background prior to integration and doing automatic background subtraction of
the integrated pattern. The "X" (special) tab contains several additional optional
features like cBN absorption correction, manual selection of the number of integrating
bins.
4.1 File Handling
Images and pattern can be loaded by clicking the Load button in the respective modules.
Images can be in different file formats: .img, .sfrm, .dm3, .edf, .xml, .cbf, .kccd, .msk,
.spr, .tif, .mccd, .mar3450, .pnm, or any other common image formats. Pattern files
should be 2 column files. If there is a header present it should be commented by '#'
signs.
Images loaded will be automatically integrated if a calibration is available (either by
performing it in the calibration window or by loading a previously saved calibration file
(* *.poni*) file). There are too modes for file browsing (clicking the "<" and ">"
buttons):
By Name:
the next and previous filenames will be searched based on the last digits in the
filename. For example the next file from test_002.tif will be test_003.tif and the
previous will be test_001.tif
By Time:
The next and previous files loaded will be search based on creation time of the
files. This filemode does not need any numbers in the filenames it will just sort
the files based on creation time and go forward and backwards in this list.
In case you want to browse through files in larger steps the "step" value can be adjusted.
Any newly added file to the current img working directory can be opened automatically by
checking the autoprocess checkbox in the Image module.
By default the integrated pattern is not saved. To automatically save the integrated
patterns choose an output folder in the Pattern tab by clicking the "..." button and then
check the autocreate checkbox. All new integrated patterns will then be automatically
saved in this folder with name being the same as the image but different file extension.
The integrated pattern can be automatically saved in 4 different formats by checking their
respective boxes in the lower right of the Pattern tab:
•
.xy: (Selected by default) A two column format with a header which contains the
calibration parameters, polarization correction and integration unit (2th, Q or
d)
•
.chi: A two column format with a 5 line header containing the filename, integration
unit and number of points. Based on Fit2d output format.
•
.dat: A two column format without any header. It saved just the plain data.
•
.fxye: A three column format used by GSAS and GSAS-II. The third column is the error of
the intensity which is usually defined as square root of the integrated
intensity.
In addition to file browsing and the "load" button, files can also be loaded by inserting
their name and folder in the respective text fields. The upper one is the filename and
the lower one is the containing folder. If the file does not exist it the text field will
revert to its previous state.
4.2 Overlays
[image] Overlay controls in the integration window..UNINDENT
In the overlay control panel you can add, delete or clear overlays and adjust their
scaling and offset.
•
Add: Loads a pattern file (2-column file) as overlay. It is possible to select
multiple pattern and load them all at once.
•
Delete:
Deletes the currently selected overlay in the overlay list.
•
Clear: Deletes all currently loaded overlays.
The list of overlays shows several widgets representing the state of each individual
overlay. The first checkbox controls if the overlay is visible in the graph. The colored
button shows the overlay color. Clicking on it will pop-up a color-chooser dialog where
the color for this overlay can be changed. The name of an overlay is by default its
filename, but it can be modified by double-clicking the name in the overlay list.
On the right side you can adjust the scale and offset of the overlays by either entering a
specific number or using the spin-box controls. The step text fields control the steps of
the spin-box.
4.2.1 Set as Background
An overlay can be used as a background for the integrated pattern. In order to to so, you
have to activate the "Set as Background" button. This button sets the currently selected
overlay as background for the pattern file. It can be seen that an overlay is set as
background by the Set as Background button being activated for a specific overlay and by
the background overlay name being shown in the lower right of the graphical user interface
(right below the graph). The scaling and offset of the overlay/background can still be
adjusted by using the respective spin boxes. The background overlay remains active until
it is deactivated, therefore the background will be automatically subtracted from each
newly integrated image or newly loaded pattern. If autosave for pattern is set, Dioptas
will create a bkg_subtracted folder in the autosave folder and automatically save all
subtracted patterns.
4.2.2 Waterfall
The Waterfall button will automatically adjust the offset of all loaded overlays to a
multiple of the text box to the right of it. This creates a waterfall plot of all
overlays. The Reset button resets all overlay offset to zero.
4.3 Phases
[image] Phase controls in the integration window..UNINDENT
The basic controls for phases are similar to the ones in overlay:
•
Add: Loads a *.jcpds or *.cif file, calculates the line positions in the range of the
current pattern and shows the phase lines in the graph. Cif-files will be
internally converted into the jcpds format. For doing so, a small window will
pop-up asking which intensity should be the minimum intensity for each reflection
(Intensity Cutoff) and up to which minimum d-spacing the reflections should be
included (Minimum d-spacing). You can select multiple *.jcpds or *.cif files in
the file dialog to load multiple phases.
•
Edit: Opens a dialog where the jcpds file can be edited. For further details see the
JCPDS editor section
•
Delete:
Deletes the currently selected phase in the phase list.
•
Clear: Deletes all phases.
•
Save List:
Saves a list of phases (basically a text file with the path to all phases loaded)
which can be later restored.
•
Load List:
Loads a list of phases which was previously saved by the Save List function.
The list of phases shows several widgets representing the state of each individual phase
overlay. The first checkbox controls if the phase lines are visible in the graph. The
colored button shows the color of the phase lines. Clicking on it will pop-up a
color-chooser dialog where the color for this phase can be changed. The name of an phase
is by default its filename, but can be changed by double-clicking the name in the phase
list. Additionally the pressure and temperature for each phase is shown in the phase
list. If for a particular phase thermal expansion is not in the jcpds file it will always
display '- K'.
On the right side the pressure and temperatures of the loaded phases can be adjusted. If
Apply to all phases is checked the pressure and temperature will be set for all loaded
phases. By default the pressure and temperature values will be displayed in the phase
legend in the pattern if they differ from ambient conditions. For disabling this feature
please uncheck the Show in Pattern checkbox.
4.3.1 JCPDS Editor
[image] Graphical JCPDS editor..UNINDENT
In the JCPDS Editor the parameters of the jcps phase can be modified. Every change will
be immediately reflected in the position of the lines in the pattern. You can edit the
comment, the symmetry, lattice parameter and equation of state parameters. Reflections
can be edited in the reflections table. h, k, l and intensities can be modified by
double clicking in the table all other parameters are calculated correspondingly. A "0"
after a parameter name always means that this is the value at ambient condition and when
there is no "0" the value corresponds to the current temperature and pressure conditions
modified in the Phase tab. The changes can be saved as a new file by clicking the Save
As button. If you want to revert all changes and reload the original files please press
the Reload File button. If you like the changes you made you can close the JCPDS editor
either by clicking the X button or the OK button on the lower right. The Cancel button
will close the JCPDS editor and revert the changes made since the last opening of the
JCPDS editor.
4.4 Corrections
[image] Correction controls in the integration window..UNINDENT
In the Cor tab it is possible to enable intensity corrections for cBN seats, diamonds
and the scintillator thickness of the detector.
4.4.1 cBN Seat Correction
Enabling this option calculates the theoretical transmitted intensity through a diamond
and cBN seat based on the parameters entered into the text boxes. Where:
•
Anvil d:
anvil thickness in mm.
•
Seat d:
seat thickness in mm
•
Inner Seat r:
radius of the small opening of the cBN seat (close to the diamond) in mm
•
Outer Seat r:
radius of the outer opening of the cBN seat in mm
•
Cell Tilt:
tilting of the cell in respect to the primary beam in degrees.
•
Tilt Rot:
direction of the Cell tilt in degrees.
•
Offset:
offset of the sample position from the center of the diamond - seat assemblage in
mm
•
Offs. Rot:
defines the rotation of the center offset
•
Anvil AL:
Absorption length of the anvil in \mu m
•
Seat AL:
Absorption length of the seat in \mu m
To see the calculated transmitted intensity distribution press the Plot button. This will
show the calculated absorption correction in the image view.
4.4.2 Oblique Incidence Angle Detector Absorption Correction
Enabling this option will correct the intensity response of the detector for large angles.
The intensity is proportional to the path length of the diffracted x-ray beam through the
scintillator of the detector. This causes higher intensities at larger angles between the
diffracted beam and the normal of the detector plane due to larger path lengths. The
correction assumes that the source of the intensity is coming from the calibrated sample
position. This correction is not valid if there is additional contribution from air or
other background. The background contribution needs to be either removed first or the
correction needs to be applied to the sample and the background signal before subtraction.
Parameters:
•
Det. Thickness:
Thickness of the detector scintillator in mm
•
Abs. Length:
Absorption length of the detector scintillator in \mu m
To see the calculated intensity correction press the Plot button. This will show the
calculated absorption correction in the image view.
4.5 Background subtraction
[image] Background controls in the integration window..UNINDENT
In the Bkg tab an image can be loaded as background image or we can automatically
subtract an estimated background from the integrated pattern.
4.5.1 Image Background
This image will be subtracted from the original image prior to the integration process.
The intensity of the image can scaled or offset by using the corresponding spin boxes.
The text fields next to the spin boxes define the individual steps for the spinbox. After
each change, loading an image as background, removing it, or change the scale and offset
of the background image, the image will be automatically reintegrated.
•
Load: Loads an image as background image.
•
Remove:
Removes the currently loaded background image. The original image will then be
integrated without any background subtraction.
•
Scale and Offset:
The intensity of the background image is scaled by: scale x img_intensity +
offset.
4.5.2 Pattern Background
Activating this, will automatically try to estimate the background in the integrated
pattern using a moving average method. The background will then be created by fitting the
resulting pattern with a polynomial.
•
Smooth Width:
Defines the width of the moving window. The unit is based on the selection in the
pattern plot (2\theta, Q or d).
•
Iterations:
Number of times the moving averages filter goes through the pattern.
•
Poly Order:
The order of the polynomial which is fitted after the moving average filter.
•
X-Range:
Defines the minimum and maximum x-value of the pattern used for background
subtraction. CAUTION the subtracted pattern will only be displayed in this
range.
•
Inspect:
This button enables the inspection mode in the pattern widget (see Fig. %s).
Enabling this mode shows the original pattern and the subtracted pattern (red
dashed line). This is very useful to tweak the background subtraction parameters
to the specific needs of the pattern. Furthermore, the x-range can be adjusted
visually by dragging the ROI (solid yellow lines).
[image] Inspect-Mode in the pattern widget for background subtraction..UNINDENT
Enabling the pattern background subtraction and also the inspect mode can also be easily
done by using the quick actions in the pattern widget (see Fig. %s). The "bg" button on
the right side will enable the background subtraction and clicking the "I" button will
enable the inspection mode.
4.6 Special (X-Tab)
[image] Special Options..UNINDENT
The currently available features:
4.6.1 Integration
Here you can manually specify the number of integration bins and/or choose to supersample
the image. Supersampling an image by a factor of n>1 results in of splitting of each
pixel into n^2 pixels with equal distribution of intensities among the splitted pixels.
For perfect powder samples this can result in smaller integrated peak widths and more
points per peak if the physical pixel width is too high. However, it may result in
unreasonable intensity distributions. Please use at your own risk.
4.7 Quick Actions
The "Image" widget and the "Pattern" widget exhibit several quick actions. Some of them
can be context sensitive (e.g. if there is an image background loaded).
4.7.1 Image Quick Actions
[image] Quick actions in the image widget..UNINDENT
The image quick actions are shown in the lower left of the image widget in the
integration view.
•
ROI: Enables a Rectangular region of interest (ROI) on the image, which can be dragged
and changed in size by dragging the corners. Only the image part in the ROI will
be integrated.
•
Cake: The image will now always automatically shown as Cake (2d-integrated image),
which basically shows the change in intensity with azimuth.
•
Image: This will change back to only display the original image and not the cake.
•
Mask: Activates the mask for integration. The mask needs to be defined before in the
Mask-module.
•
trans: This checkbox will define whether the mask is displayed with transparent or solid
color.
•
bg: If checked the widget will show the background subtracted image. (a background
has to be loaded to enable this button).
•
AutoScale:
Defines whether a the intensity range displayed in the image widget will be
rescaled for each new loaded image.
•
Undock/Dock:
This button will undock the image widget from the Dioptas window into a new
window. This is especially useful for multi-monitor setups, where the image can
be displayed on one monitor and the integrated pattern on another.
4.7.2 Pattern Quick Actions
The pattern widget exhibits several buttons on the top and also on the right (see Fig. %s)
•
on the top:
•
Save Image:
Saves the currently shown image as either a *.png file for presentation
or *.tiff file as data.
•
Save Pattern:
Saves the current pattern either in a two-column format (*.xy) or the
complete pattern content in a *.png or vectorized *.svg format.
•
As Overlay:
Adds the currently active pattern (white) to overlays.
•
As Bkg:
Adds the currently active pattern (white) to overlays and sets it as
background.
•
Load Calibration:
Opens a dialog to open a *.poni calibration file and sets this as the
new calibration parameters.
•
on the right:
•
2\theta, Q or d:
selects the unit in which the image should be integrated to a pattern.
•
bg, I: enable background subtraction and the background inspection mode.
•
AA: determines whether anti-aliasing is enabled for the pattern widget.
Disabling AA improves performance when many overlays are shown in the
pattern widget.
•
A: when enabled, a newly integrated or loaded pattern will be shown
otherwise the zoom will stay as is. This will be enabled on every
double right click in the pattern widget.
5 CONFIGURATIONS AND PROJECTS
5.1 Configurations
[image] Location of configuration controls..UNINDENT
Configuration are used to handle experimental setups with multiple detectors in one
Dioptas instance. A configuration contains the calibration information, loaded image,
image corrections, mask, integrated pattern and background corrections. Overlays and
phases are not handled in configurations and are global. By default the configuration
control panel (Fig. %s) is hidden and only one configuration is active (single Detector
mode). To enable the panel, please click the C button on the upper left corner of
Dioptas. In principle, Dioptas can handle infinite configurations, however, this also
means a lot of RAM usage.
A configuration can be added or removed by the + and - buttons. Each added will be
subsequently numbered and can be selected by the buttons to the left of the - button.
After adding a a new configuration the configuration will be empty and needs to be newly
calibrated for the wanted detector geometry.
The File and Folder controls in the middle of the configuration panel enable combined
file browsing for all configurations, whereas the Pos textfield defines the position of
the number in the string. By using the "<" and ">" buttons the next or previous image in
each configuration will be loaded.
This is also true for the similar Folder "<" and ">" buttons. Here Dioptas supposes
that the actual filenames stay the same, but the images are saved in subsequently
indexed folders, like e.g. "run101", "run102". The MEC checkbox enables a special mode
for the matters at extreme conditions beamline at LCLS where both, the folder and the
filenames have the run number included.
The Factor Input is an intensity scaling factor for the image in the configuration, so
that different configurations can be compared where the detector response is not equal.
Combine Patterns:Attempts to combine integrated patterns from all configurations, when
selected.
If there is overlap between the different configurations, the intensity will be
averaged.
Combine Cakes: Attempts to combine integrated cakes from all configurations, when
selected.
If there is overlap between the different configurations (which is in principle not
possible in a multi detector setup), the intensity will be averaged.
5.2 Dioptas Projects
[image] Location of the project controls.UNINDENT
The state of Dioptas including the different configurations with image, mask, image
corrections, background corrections overlays and phases can be open and saved in
projects. This is very useful in case you want to continue working on a project another
day. The controls for this are in the upper left of the Dioptas window (see Fig. %s).
The Dioptas project files have a *.dio extension and are basically HDF5 under the hood.
Thus, can the data can be also opened or edited with any HDF5 viewer. [image]
Opens a file browser where you can select a Dioptas project (*.dio) to open. [image]
Saves the current state of Dioptas into a Dioptas project (*.dio). [image]
Resets the current state of Dioptas. This means all phases, overlays, and configurations
will be deleted and you can start from a new fresh Dioptas.
AUTHOR
Clemens Prescher
COPYRIGHT
Dioptas - GUI program for fast processing of 2D X-ray diffraction data Principal author:
Clemens Prescher (clemens.prescher@gmail.com) Copyright (C) 2014-2019 GSECARS, University
of Chicago, USA Copyright (C) 2015-2018 Institute for Geology and Mineralogy, University
of Cologne, Germany Copyright (C) 2019 DESY, Hamburg, Germany