Linked Questions
10 questions linked to/from Losing polygons after projecting map in QGIS
17
votes
2
answers
5k
views
Ortho Projection produces artifacts
I`m trying to create a sphere-like view using qgis and the "world from space"-projection http://spatialreference.org/ref/sr-org/6980/ (essentialy an ortho-projection). ArcGIS wraps the shapes ...
- 171
10
votes
3
answers
2k
views
How to get a "classical" globe projection
I have a shapefile of the world continents in EPSG 4326.
To what reference system do I have to reproject my file to get a projecting like this globe below?
- 8,049
9
votes
2
answers
1k
views
Clipping polygons to hemisphere for azimuthal orthographic projection using QGIS
I'm a bit of a novice with QGIS, so this is really throwing me for a loop.
For the maps I'm intending on making, an azimuthal orthographic projection would be my preference.
For example, one map I'...
- 93
3
votes
1
answer
5k
views
Projecting Azimuthal Equidistant global map into circle using QGIS
I'm fairly new to QGIS/GIS.
I have a shapefile of all the countries in the globe I downloaded from Natural Earth. I'm needing to create two hemisphere maps (similar to these guys I found on Wikimedia) ...
- 163
8
votes
2
answers
2k
views
How to plot a full hemispheric orthographic projection in R
I want to make a plot like that using R:
All I want is the country borders as seen from outer space, no fancy colors needed. It seems I need to use the spTransform function, but it gives me a "non ...
- 784
2
votes
2
answers
1k
views
Plotting a certain range in azimuthal projection using ggplot2
I would like to limit a map to a particular range of values (i.e. northern hemisphere) under an azimuthal or orthographic projection in ggplot2. When I set ylim, I receive an error message that ...
- 125
5
votes
1
answer
939
views
gdalwarp malfunctioning for GEOS projection
I'm trying to reproject a flat lat/lon image into geostationary projection.
The input data is 1441x1441 pixels and covers the region -90 -> 90 lat and lon.
The output data should be 3712x3712 ...
- 328
4
votes
1
answer
372
views
How can I crop a raster layer to a hemisphere?
I have a raster layer that I want to crop to a hemisphere centered on 30°N, 100°W, to use in an orthographic projection map. What is the best way to do this?
There doesn't seem to be an easy way to ...
- 809
1
vote
1
answer
909
views
Orthographic reprojection with mapnik
I am trying to create a google earth like wep application. My problem is that I can't get to render a full view of the earth.
The zoom_all() function generates the following error :
RuntimeError: ...
- 121
0
votes
0
answers
429
views
Using gdalwarp for warping Space View Perspective or Orthographic tiff?
i need to warp an image with a Space View Perspective or Orthographic project. What is the parameter for the gdalwarp -s_srs "+proj=???? +ellps=WGS84 +datum=WGS84" -t_srs EPSG:4258 in.tiff out.tiff ?
...
- 327