[gdal-dev] Working with NED elevation data - part 2

[Even Rouault]

Le lundi 23 août 2010 05:28:17, Stephen Woodbridge a écrit :
> Even,
> 
> It seems the adding:
> 
> #include <cpl_conv.h>
> 
> resolves the segv issue.

Strange, I think there's no particular good reason why it worked with GTiff and 
not VRT. I assume you compile on a 64bit platform and that without header the 
return type was assumed to be of integer type, thus leading to pointer 
trucation.

> 
> I would recommend changing the example in:
> 
> http://www.gdal.org/gdal_tutorial.html
> 
> To include that in the section "Reading Raster Data" because the example
> C code uses CPLMalloc(). It would also be very helpful to add:
> 
> ...
> CPLFree(pafScanline);

Done