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Add Grids for Brazil #18
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Thanks. Without knowing for sure that the grids can be redistributed then I will not add them to the plugin. Anyway, even is it will be ok to redistribute them I would need some support to add them to the plugin, or you can propose a pull request with the necessary changes. |
Hello, i receive a respond via email from IBGE - the national institute responsible by ProGrid: tl;dr : We can use the grids. Condition: Cite the IBGE as source. |
Hello @gioman ! There is a pdf with some information relevant to this grids. |
@luigicc Olá! thanks for the informations, I will add the transformations for Brazil (it would be very good if you can attach here the necessary sample data to test them) as soon as possible, that could not be very soon unless someone is willingly to support the necessary work. |
Hello gioman Any news about inserting the transformations of Brazil? |
Hi, it would take a few hours of work, and at this time I'm not able to do that in my free time. If you need feel free to submit a patch or to hire me. Cheers! |
Hello!
The Brazilian grids can be download (bundled with software ProGrid) here: ftp://geoftp.ibge.gov.br/aplicativos/transformacao_coordenadas/
There is some information about that in: https://wiki.osgeo.org/wiki/Brazilian_Coordinate_Reference_Systems
I attached the files for convenience.
SAD96_003.GSB: EPSG:5527 -> EPSG:4674 (Transformation EPSG:5529)
SAD69_003.GSB: EPSG:4618 -> EPSG:4674 (Transformation EPSG:5528)
CA61_003.GSB: EPSG:5524 -> EPSG:4674 (Transformation EPSG:5525)
CA7072_003.GSB: EPSG:4225 -> EPSG:4674 (Transformation EPSG: 5526)
GridFiles.zip
I will look for some info about the grid file license.
Thanks!
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