Oh, that is one step further. There are two things: - the difference between center of the pixel and corner of the pixel (that I was "reporting" in my previous email) - row from top down or bottom up.
Tiffs usually have the rows ordered top down. Technically can be also bottom up, but it may be a problem with some software. It is a strange thing. Avoid that. In the top-down mode (that is the usual one), in the geotransform the pixel size in the Y direction is negative, because the Y direction in the image goes in the oposite direction as the CRS. On Fri, 2 Aug 2024 at 07:00, Stefan Gofferje <li...@home.gofferje.net> wrote: > On 8/1/24 11:11, Javier Jimenez Shaw wrote: > > IIRC the x,y for SetGeoTransform are for the top left corner of the top > > left pixel. Not the center of the pixel. It can be confusing. > > (that means that it does not change with the pixelsize if you downscale > > or upscale ;) > > Oh, yeah, that would have caused some confusion because the data starts > with the lower left corner... > > -- > (o_ Stefan Gofferje | SCLT, MCP, CCSA > //\ Reg'd Linux User #247167 | VCP #2263 > V_/_ https://www.gofferje.net | https://www.saakeskus.fi > >
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