A.3 Histogram pane

The histogram pane is used to edit background and diffractometer constants for a histogram, as well as set damping and refinement flags for these parameters.

If "Multiple Histogram Selection" mode is set to "All", this pane is disabled. For other settings of this mode, groups of histograms can be selected and modified collectively.

If the EXPTOOL program (see the installation instructions) is installed, a button for adding histograms will appear on the bottom right on this pane, as seen below. If the program is not properly installed, no errors occur, but the button does not appear.

Note that the order that histograms appear in this pane is determined by the "Sort histograms by" option in the Options Menu.

If there is more than one phase present in the refinement, an extra box appears at the top of the pane to allow phase flags to be selected. This allows a phase to be used in some histograms but not in others. It also offers a simple way to effectively "delete" a phase by removing it from all histograms. Be sure to rerun POWPREF after changing the phase flags.