[gdal-dev] GdalWarp issue

[Martin Chapman]

Chaitanya,



Thank you very much for your response.  The problem seems to be with the 
default SOURCE_EXTRA parameter of the GDALWarpOptions being defaulted to 1. 
When I up that number everything works fine.  I think the default for that 
value should be larger.  What do you think?



Best regards,

Marty



From: Chaitanya kumar CH [mailto:chaitanya.ch at gmail.com]
Sent: Monday, March 19, 2012 1:00 PM
To: Martin Chapman
Cc: gdal-dev at lists.osgeo.org
Subject: Re: [gdal-dev] GdalWarp issue



Martin,

Change the resampling method and/or change the SAMPLE_STEPS warp option.

On Tue, Mar 20, 2012 at 12:12 AM, Martin Chapman <chapmanm at pixia.com> wrote:

All,



Please see the attached sub-region screen capture of an image I created 
using gdalwarp 1.9.  I used MS Paint to highlight in red several columns of 
pixels that repeat a pattern from left to right across the image (vertically 
only) where the pixels are the same color for both pixel columns when in 
fact they should be different.  The problem seems to occur whether I am 
going from source wkt (wgs84 in this case) to the same coord system or if I 
go from wgs84 to another coord system.   It only seems to happen when the 
source image is in WGS84 though.



Any help is much appreciated.



Best regards,

Martin






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-- 
Best regards,
Chaitanya kumar CH.

+91-9494447584
17.2416N 80.1426E

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