Hi all,

I try to use the intensity graph as an xy-input device. The user
should be allowed to drag the cursor to enter the value. However, the
user can always move the cursor outside the plot area, which causes
the corresponding axis to rescale. I want to have strictly fixed upper
and lower limits. Is there any way to achieve this? One possible
solution would be to reset the min/max values every time the cursor
was moved (and coerce the cursor position back into the range). A
simpler approach would be appreciated!

Regards,
Matthias

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