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Swiping Vector layer over the Image using IDL [message #45133]

Thu, 11 August 2005 00:09

Chirag Modh
Messages: 4
Registered: August 2005

Junior Member

On Thu, 2005-08-11 at 11:16, Chirag Modh wrote:
> Hi All,

I have one satellite image (geoTIFF) and a corresponding vector layer.
I
was able to overlay the vector layer onto the image using OO IDL.
Now I am interested in *swiping* the vector layer on the Image display
(similar to the ENVI's swipe functionality, which by the way only
supports raster over raster.)

I understand that I have to create two layers one containing the Image
which would remain static and the second layer,containing the vector,
which would be *swiping* over the Image layer when the mouse is dragged
across the window(there by providing an progressive overlaying of
vectors).

I am sure someone must have done this in IDL.

I would be grateful if someone would give pointers on how to achieve
this using objects.

I would appreciate it if someone would point out or provide algorithm
for swiping.

With regards
Chirag

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Swiping Vector layer over the Image using IDL

By: Chirag Modh on Thu, 11 August 2005 00:09

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