Timeline for Seeking global projection suitable for raster preserving equal area
Current License: CC BY-SA 4.0
7 events
when toggle format | what | by | license | comment | |
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Jan 22, 2020 at 14:39 | comment | added | Gabriel De Luca | If the population was computed for the projection and cell size of that raster, seems to me better to do not reproject it. | |
Jan 22, 2020 at 14:15 | comment | added | GeoF | global population data | |
Jan 22, 2020 at 13:43 | comment | added | Gabriel De Luca | Unfortunately I have a total ignorance of ArcGIS tools, but I suppose the pixel values are not modified when reprojecting the raster, at least this is the case with the GDAL library. The resulting pixel takes the closest pixel value, unless there is an interpolation specified in the process. What kind of data has the original pixels? | |
Jan 22, 2020 at 13:23 | comment | added | GeoF | Yes but I assume that this is correct. I am not sure thought how transformation of these 360 to 1 pixel works. Does it sum the values of all pixels to the one? Or it takes the value of the central one and erases the rest... | |
Jan 21, 2020 at 22:37 | history | edited | PolyGeo♦ | CC BY-SA 4.0 |
Removed second (redundant) question
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Jan 21, 2020 at 22:07 | comment | added | Gabriel De Luca | If you think that convert pixels to points and reproject them must work, reproject the raster is not the same. Starting with a 360x180 pixels raster in EPSG:4326: reproject the points in a Mollweide projection will give you 360 points in a Pole, but just one pixel if you reproject the raster. | |
Jan 21, 2020 at 17:00 | history | asked | GeoF | CC BY-SA 4.0 |