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Creating a box overlaid on an image to identify a subset of data for analysis [message #37599]

Thu, 08 January 2004 08:33

Charles Paxson
Messages: 4
Registered: March 2003

Junior Member

Dear users group,

What is the standard way of showing a box over an image in IDL? The
widget_draw routine allows for keywords "motion_events", and
"button_events". So the cursor positions may be obtained from the events
structure.

The intention of the application is to allow a mouse click press, drag and
then release to indicate a region of data that will be processed and
displayed in another window. With a combination of if statements checking
on the button state and over plots, I'm sure I could kluge something
together, but is there a standard routine or method to perform this task?
Thanks.

Regards,

Charles Paxson
Frontier Technology
Beverly, MA

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