Re: [gdal-dev] building a vrt to stack overlapping COGs with a mask/alpha band

2020-07-10 Thread Landry Breuil
On 09/07/2020 10:09, Landry Breuil wrote: On 08/07/2020 13:23, Even Rouault wrote: On mercredi 8 juillet 2020 10:12:31 CEST Landry Breuil wrote: Your best option with VRT would be to use a NoData value instead if you can. You mean setting a nodata value when building the COGs (ie gdal

Re: [gdal-dev] building a vrt to stack overlapping COGs with a mask/alpha band

2020-07-09 Thread Landry Breuil
On 08/07/2020 13:23, Even Rouault wrote: On mercredi 8 juillet 2020 10:12:31 CEST Landry Breuil wrote: > Hi, > > i'm converting a stock of tiled aerial pictures (from distinct > years/campaigns) to COG (using gdal 3.1.0), and trying to stack them via > a vrt. the COG arent 'full', in th

Re: [gdal-dev] building a vrt to stack overlapping COGs with a mask/alpha band

2020-07-08 Thread Even Rouault
On mercredi 8 juillet 2020 10:12:31 CEST Landry Breuil wrote: > Hi, > > i'm converting a stock of tiled aerial pictures (from distinct > years/campaigns) to COG (using gdal 3.1.0), and trying to stack them via > a vrt. the COG arent 'full', in the sense that they have a bbox, but > there isnt data

[gdal-dev] building a vrt to stack overlapping COGs with a mask/alpha band

2020-07-08 Thread Landry Breuil
Hi, i'm converting a stock of tiled aerial pictures (from distinct years/campaigns) to COG (using gdal 3.1.0), and trying to stack them via a vrt. the COG arent 'full', in the sense that they have a bbox, but there isnt data *everywhere*. Some of those campaigns/COGs have overlapping BBOXes.