Quick view of background

[briantoby]

One of the reasons why it is good for a scientist to be involved in creation of software that they use for their own work is that she or he will be motivated to create tools that do tasks that need to be done and will be convenient to use. Forgive that digression, but one thing that I find that I do frequently in GSAS-II is to zoom in on the background in the plot of a pattern so that I can see how well the background is being fit. That always took a few tries.

In the spirit that "Brian will happily spend a day coding to avoid an hour of tedium" (in this case a few hours once and a few minutes, many, many times), there is now a new menu item "Zoom background" and a button labeled "Zoom" associated with the Background data tree entry.

Use of this will magnify the background region (for the vertical scale only). Thus, going from this:

to this:

If this zoom feature is used multiple times, each subsequent use will zoom out a bit, which may show the background a bit better, as is the case after the button was pressed three times:
.