[Xastir] vertical lines in hi-res geotiff orthophotography

[Curt, WE7U]

On Tue, 18 Jan 2011, Tom Russo wrote:

> Xastir draws rectangles for each pixel using XFillRectangle, and my guess is
> that the place where it calculates the size of the rectangles is getting the
> calculation just a tiny bit off.  This is just a hunch, but most of the imagery
> that has been used in Xastir so far is far lower resolution than these, and
> it's entirely possible there's a numerical issue in the computation.

Would be my first guess also.

The original code was designed/optimized for 7.5' topo maps in DRG format, later tweaked slightly to handle DOQQ's.

You're entering new ground with your high-resolution images and it'd be great to figure this one out.

-- 
Curt, WE7U.                         <http://www.eskimo.com/~archer>
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