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You can zoom in on any part of plot by selecting “Zoom” from the Plot menu or by typing Control-=. You will be prompted in the echo area to click on two points in the plot. Those two points are the corners of a box surrounding the part of the plot you want to zoom in to. You can zoom repeatedly. Selecting “Unzoom” from the Plot menu or typing Control-- will restore the original plot. Incremental unzooming is not implemented.
The Plot menu has several options for plotting I0. I0 can be plotted along with μ(E) as shown below. Alternately, I0 can be plotted alone for the current group or for each marked group.
The I0 channel is among the data saved in a project file.
A plot of μ(E) metallic tin along with the signal from the I0 channel.
The group list is only tall enough to display about 11 groups without needing the vertical scroll bar. Any more, and some will be hidden from view by the scrollbar, as in the first figure below. Clicking the collapse button, which is the button with the downward pointing arrow next to the plot option label, the plot options tab is hidden, giving more vertical space to the group list, as in the second figure below.
When the plot options are hidden, the collapse button is replaced by an upward pointing arrow. Clicking it will restore the plot options tabs and shorten the group list.
ATHENA with a large number of data groups.
The group list occupies more space at the expense of the plot options tabs.
