[gdal-dev] gdalbuildvrt Max Value / Pixel Function

[Abdul Raheem Siddiqui]

Thanks for your reply, my rasters are not sharing extent but some do
overlap.

How about GTI, Does that provide this functionality? Do you know.

On Thu, Feb 13, 2025, 4:00 PM Daniel Baston <dbaston at gmail.com> wrote:

> Hi Abdul,
>
> For the specific case of multiple rasters that share the same extent, the
> next release of GDAL should have a replacement "gdal_calc" that would take
> multiple inputs and write a VRT that applies an expression to those inputs
> ("max", in your case). In the meantime, I think your best option would be
> to prepare the VRT yourself.
>
> Dan
>
> On Thu, Feb 13, 2025 at 3:12 PM Abdul Raheem Siddiqui via gdal-dev <
> gdal-dev at lists.osgeo.org> wrote:
>
>> Hello,
>>
>> I am looking for functionality to create a VRT of multiple rasters where
>> the VRT pixel value is the maximum of underlying rasters pixel values.
>>
>> I found out that we have pixel functions
>> https://lists.osgeo.org/pipermail/gdal-dev/2016-September/045134.html
>> that we can add to VRTs to get this behavior but just checking to see if
>> there is a direct way to specify this in gdalbuildvrt command line call or
>> do one has to manually inject this in VRT xml.
>>
>> On the same note does the new gdaltileindex provide this functionality of
>> selecting the max value for each pixel out of the box?
>>
>> Regards,
>> Abdul Raheem Siddiqui
>> ERT Inc.
>>
>> _______________________________________________
>> gdal-dev mailing list
>> gdal-dev at lists.osgeo.org
>> https://lists.osgeo.org/mailman/listinfo/gdal-dev
>>
>
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