| Re: IDL Movie Viewer [message #29854 is a reply to message #29852] |
Wed, 20 March 2002 16:40   |
Mark Hadfield
Messages: 783
Registered: May 1995
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Senior Member |
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"Phil" <plmcelwee@yahoo.com> wrote in message
news:RO8m8.530$Bd4.3473@dfw-service2.ext.raytheon.com...
> If you can find the image-loop viewer, I would appreciate your sending it
to
> me. My web searches haven't turned anything up, but maybe I can modify
your
> file to add some features.
The image-loop viewer is already on my IDL page at...
http://katipo.niwa.cri.nz/~hadfield/gust/software/idl/
I just checked it was working and updated the page. The reason I didn't
point you to the page immediately is that my software library is not a
polished, modularised set of routines like others have on the WWW. Nor has
it been widely tested. It's a conglomeration of interdependent routines and
classes in various stages of development, mostly ones I use in my day-to-day
work. I recognise that anyone else who tries to use it may well run into
some difficulties. So I'm not too eager to recommend it to anyone else. But
if you want to have a go, I'd love to hear how you get on and help if
necessary.
To use it you will *need* IDL version 5.5. (That's mainly because since
installing 5.5 on my machine I have made extensive use of the new
_STRICT_EXTRA keyword.) You should download and unpack the whole library
into your IDL path, then run the command...
IDL> mgh_motley
to initialise it. Then try
IDL> mgh_example_image_sequence, 0
IDL> mgh_example_image_sequence, 1
The first displays IDL's abnorm.dat dataset in my image-sequence object, the
second in XINTERANIMATE.
My image viewer does not (yet) support the operations you want. I does offer
(IMHO) a very powerful interface for examining the animated sequence. (It
inherits this from a superclass called MGH_Animator.)
To adjust contrast & brightness you could manipulate the palette via the
"Edit Palette" menu item. There was also a discussion on this group a few
months back about interactive adjustment of these image attributes via the
mouse--you might want to look at that.
It would not be too difficult to examine values associated with specific
pixels, either by extending the mouse-picking code or by adding a menu item
to show image data in a XVAREDIT widget. I could do either or both of these
quite quickly and would be willing to do it because it would be useful for
me too.
Anyway, have a look & see what you think.
--
Mark Hadfield
m.hadfield@niwa.co.nz Ka puwaha et tai nei
http://katipo.niwa.co.nz/~hadfield Hoea tatou
National Institute for Water and Atmospheric Research (NIWA)
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