[gdal-dev] -allow_projection_difference equivalent in GDAL CLI?

[Even Rouault]

It all depends what "works" mean for you. For sure 
-allow_projection_difference will result in *something*, but that will 
be pure garbage. It will completely ignore the CRS information. The 
-allow_projection_difference flag is meant for tiles that are 
fundamentally in the CRS but coming from different formats/providers 
where the CRS don't exactly compare to equal due to mundane 
differences.  If you want on-the-fly reprojection, you should rather use 
"gdal driver git create" to create a GTI compatible index, since the GTI 
driver can perform on-the-fly reprojection.

Le 20/12/2025 à 01:15, Scott a écrit :
> That's kinda why I was asking. This works:
>
> gdalbuildvrt -allow_projection_difference \
>    result.vrt \
>
> STACIT:"/vsis3/sentinel-s2-l2a-stac/2025/12/18/S2C_OPER_MSI_L2A_TL_2CPS_20251218T212314_A006718_T11SMA.json":asset=scl 
> \
>
> STACIT:"/vsis3/sentinel-s2-l2a-stac/2025/12/17/S2B_OPER_MSI_L2A_TL_2BPS_20251217T200148_A045870_T10JBQ.json":asset=scl 
>
>
> This does not:
>
> gdal raster stack \
>
> STACIT:"/vsis3/sentinel-s2-l2a-stac/2025/12/18/S2C_OPER_MSI_L2A_TL_2CPS_20251218T212314_A006718_T11SMA.json":asset=scl 
> \
>
> STACIT:"/vsis3/sentinel-s2-l2a-stac/2025/12/17/S2B_OPER_MSI_L2A_TL_2BPS_20251217T200148_A045870_T10JBQ.json":asset=scl 
> \
> result.vrt --overwrite
>
> Is there a way to create .vrt with different projections in GDAL cli, 
> like gdalbuildvrt does?
>
> Thanks!
> Scott
>
>
> On 12/19/25 15:56, Even Rouault wrote:
>>
>> Le 20/12/2025 à 00:46, Scott a écrit :
>>> Hey Even,
>>>
>>> Will do.
>>>
>>> In this case I was working with Sentinel L2A. One raster was zone 10 
>>> and the other was zone 11, which would cause stack to complain.
>>
>> huh, and what result do you expect from stacking tiles in different 
>> UTM zones, when no on-the-fly reprojection is done ... That will 
>> result in non sense.
>>
>>
>
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