Some Sat. Imagery Does Not Display With Certain Projections

Errors and unexpected results
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stormchasing101
Posts: 37
Joined: Sun Sep 06, 2015 6:24 am

Some Sat. Imagery Does Not Display With Certain Projections

Post by stormchasing101 »

Hello,

I noticed something weird when trying to plot satellite imagery using the vertical perspective and orthographic projections. The data will not display. It plots well directly from the GVAR projection, however I wanted to use a different angle. Is there a reason it will not display. The data loads, but it shows as all black. I used the GWNHEM data from the satepsanone site. Is there a bug with those map projections? Thanks

--Carl
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bobc
Posts: 939
Joined: Mon Nov 15, 2010 5:57 pm

Re: Some Sat. Imagery Does Not Display With Certain Projections

Post by bobc »

Hi Carl -

It looks like there's a bug with the Vertical Perspective and Orthographic projections. I wrote it up as Inquiry 2583. I found that you get the black display if you choose to display the entire domain of the data, which (from the Region tab of the Field Selector) includes space off the earth. If you manually go in and do a Shift+left-click+drag in the Region tab to draw a bounding box contained completely within the bounds of the Earth, then things work better.

Thanks for letting us know about the problem -
Bob Carp
McIDAS Help Desk
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