I want to use QGIS to make a world map that has two or three azimuthal orthographic maps. I would also like to use Natural Earth's Cross-blended Hypsometric Tints. Is this possible? The example was done using ArcGIS Pro. I would like to use QGIS if possible.
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1What have you tried? Here's a partial proj.4 string for an orthographic projcrs: +proj=ortho +datum=WGS84 +lat_0=15.0 +lon_0=-80.0 +x_0=0.0 +y_0=0.0 +units=m no_defs – mkennedy Sep 01 '17 at 21:55
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I have tried this: +proj=ortho +lat_0=15 +lon_0=-88 +x_0=0 +y_0=0 +a=6371000 +b=6371000 +units=m +no_defs. Nothing displays when I use this string on a raster. Works on vector data. – Bradley Jones Sep 02 '17 at 01:01
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I don't have much experience with QGIS. Trying to familiarize myself with it. I'm also new to custom CRS. – Bradley Jones Sep 02 '17 at 01:03
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It may be a rendering issue. I tried the proj from my comment above again and noticed the the raster will display at certain zoom levels and extents. but as I zoom or pan the image will disappear. However, it will reappear when I go back to the previous extent. – Bradley Jones Sep 02 '17 at 01:24
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Here is an error message: 2017-09-01T20:29:56 1 Could not reproject view extent: forward transform of (0.000000, 0.000000) PROJ.4: +proj=longlat +datum=WGS84 +no_defs +ellps=WGS84 +towgs84=0,0,0 +to +proj=ortho +lat_0=-36 +lon_0=175 +x_0=0 +y_0=0 +a=6371000 +b=6371000 +units=m +no_defs Error: tolerance condition error – Bradley Jones Sep 02 '17 at 01:32
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You might be better off if you define the source CRS on the same sphere. You won't see a difference on a global scale. – AndreJ Sep 02 '17 at 06:47
