mapserver error

[Christopher Schmidt]

On Wed, Jan 16, 2008 at 01:13:33PM -0500, Ed McNierney wrote:
> Lee -
> 
> INTERLACE=ON is not "wrong".  Tim is pointing out that if you're viewing an interlaced output image, the first, alternating set of scanlines will be displayed and then your browser will start again at the top of the image, filling in the alternate interlacing lines.  This will cause the top of the image to appear complete while the bottom is "blurry".  You can see variations on these visual artifacts depending on your browser, and the effect is more pronounced over a slow connection.
> 
> But if the image still looks blurry at the bottom even after you're certain the image has been completely loaded, then this is not your problem.

Note that this will almost never be the case with OpenLayers because
OpenLayers hides images until they are completely loaded (for technical
reasons unrelated to this), so if someone reports this behavior in
OpenLayers, you can usually be sure it's not an interlacing thing.

> It's hard to diagnose visual problems in text; can you either post the output image or (preferably) a public URL where the image can be viewed?

There is a 'bmp' attached to
http://openlayers.org/pipermail/users/2008-January/004506.html which
might be the one.

Regards,
-- 
Christopher Schmidt
MetaCarta