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How to change projection of raster in QGIS?
There’s no need to change layer/project SRS; just run Raster>Projections>Warp with your data as input and all should be fine. If you need smaller output, you can compress your data with Raster>Conversion>Translate.
How do you define CRS in Qgis?
To create a new CRS, or modify an existing CRS:
- Click Settings | Custom CRS to open the Custom Coordinate Reference System Definition.
- Click Add new CRS button to add a new entry to the CRS list above.
- With the new CRS selected, we can set the name and parameters of the CRS. The CRS properties are set using the 4 format.
How do you Reproject a Dem?
To reproject a DEM, setup a project with the desired projection (CatchmentSIM Drop Down >> New Project), setup the DEM with the desired boundaries and resolution (Create DEM >> Setup Blank DEM) and then populate the DEM pixel elevations with the external DEM (Create DEM >> Raster DEM).
What are the coordinates of a shapefile in ArcGIS?
In your question, you state that you have a shapefile that is currently in a Geographic coordinate system or Latitude/Longtude which has units of Decimal Degrees. This means that you have coordinates in the range of Y/Lat = 0 to 90 and X/Lon = -180 – +180.
How to create a shapefile with units in feet?
This gives you a shapefile with units in feet. The features in the shapefile did not have their internal coordinates converted, however, so they are still in the range of X = -180 to +180 and Y = 0 to 90.
Can you overlay ArcGIS on any other layers?
It should also overlay correctly on any other layers, provided they have a projection defined and that your Data Frame in ArcMap has a projection defined. Although you have set the projection of your 3 other layers by the properties menu in ArcCatalog, you have failed to re-project the data to the proper coordinate system.
Can you put proj4string in a shapefile?
I think that by using readOGR to import a shapefile renders worthless to put proj4string to the script since if any coords are available in the shapefile, it will be transported through the readOGR.