Linked Questions

5
votes
1answer
600 views

QGIS - How to globe-rotate a raster around the Greenwich Meridian? [duplicate]

This is probably the easiest way to explain my problem: I'm not sure how to say what this problem is - is it that the shapefiles and the raster are using different longitudinal origins? (probably ...
0
votes
1answer
94 views

Reprojecting Tifs [duplicate]

When I import some geotifs into QGIS, they use a reference of 0, 360. My basemaps are all -180, 180. Both the basemaps and geotifs use the same CRS, WGS84. So the geotifs display starting at 0 on the ...
1
vote
1answer
49 views

Fixing incompatible grids in QGIS? [duplicate]

I've downloaded a raster with temperature projections by the Hadley Center (CIMP5) from here. It comes as a NetCDF file that I loaded onto QGIS 3.2.1. I then overlayed a shapefile with the borders of ...
0
votes
0answers
73 views

How to import or reproject SRTM 30 sec DEM [duplicate]

I downloaded the global SRTM DEM from here. When I add the DEM as a raster layer (in my case topo30.grs file) the left/western edge of the file is at Greenwich and the right/eastern edge is at +360 ...
1
vote
0answers
24 views

Map reference starting point shifted [duplicate]

I am loading an nc4 raster downloaded from a public dataset to QGIS and it first displays an error that the data does not have CRS. Then, it charges the map but the reference point 0 is shifted the ...
0
votes
0answers
21 views

I have a global raster map opened in QGIS which is centered in the pacific. How do I change this map to be Atlantic centered? [duplicate]

I am trying to present a map for a document which needs to be Atlantic centered. I would like to know what tools I can use to do this using QGIS
6
votes
5answers
2k views

WKT for EPSG:4326 with LON 0 to +360 instead of -180 to +180

I have GRIB2 files that seem to be in a projection similar to EPSG: 4326, except that instead of longitude between -180 and +180 it is between 0 and 360. My intention is to get these files into ...
10
votes
3answers
2k views

What coordinate system is this netCDF raster?

I obtained a netCDF raster file, but I couldn't get any metadata to get the name of the coordinate system the raster has been built on. The raster itself doesn't have any coordinate system embedded. I ...
5
votes
3answers
2k views

Determine the geotransformation to convert a netCDF to geotiff

I have a netCDF file I need to convert to a geotiff. There are three subdatasets in the netCDF file: snow, lat and lon. I am accessing these files like this: import gdal import netCDF4 as nc ...
4
votes
1answer
2k views

Raster rotation on QGIS

How can I rotate a raster layer (global land-mass) to make the 180 deg longitude the center of the map (using QGIS)? 'rotate' function in R is simple but not accurate. Raster has 'longlat' projection ...
2
votes
1answer
545 views

Converting Longitude range from (0,360) to (-180,180) in Python or by using gdal commands

I have a raster downloaded. Visualising it in QGIS. I want to correctly project it so that its extent varies with longitudes from -180 to 180 instead of 0 to 360. gdalinfo filename.nc outputs the ...
3
votes
1answer
323 views

Longitude range NETCDF vs ASCII

I am trying to preprocess a netcdf dataset with arcgis such that it has the same extent, cellsize and format as an ascii dataset I am using. Both are visualized in the image below: The big one in ...
1
vote
0answers
281 views

Coordinate problem with GPCC netcdf data and QGIS

I downloaded Global Precipitation Climatology Centre (GPCC) monthly precipitation data in netCDF format from here: https://www.esrl.noaa.gov/psd/data/gridded/data.gpcc.html According to the site, ...
1
vote
1answer
78 views

Getting Canada shapefile to overlay model on QGIS?

How can I get Canada to overlap with the rest of my map? I think this is a CRS problem but I really do not know how to solve it.
2
votes
2answers
114 views

Spatial reference transformation for GRIB files using Python

I want to use the Python programming language to create a transformation of the spatial reference system used by NOAA in the GRIB files created by their WaveWatchIII model (link to grib files). Using ...

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