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How to write raster with rat factors in your raster package?
For example, if exporting from R to ArcMap, write the raster to disk, write the attribute data as csv file, then join your RAT to the raster using the Add Join tool in ArcMap. Reading the definition of writeRaster writing the RAT is clearly not implemented, at least for the native and the GTif format.
How to install raster and rgdal in R?
Source: Multi-Resolution Land Characteristics Consortium. To work with rasters in R, we need two key packages, sp and raster. To install the raster package you can use install.packages (‘raster’). When you install the raster package, sp should also install. Also install the rgdal package install.packages (‘rgdal’).
Are there any totally weird values in raster data?
Be careful with this, if your raster is large this can take a long time or crash your program. Since our raster is a digital elevation model, we know that each pixel contains elevation data about our area of interest. In this case the units are meters. This is an easy and quick data checking tool. Are there any totally weird values?
Can a raster be saved as a CSV file?
Note that if you use raster’s native .grd format (see doc, section 3.3) , the RAT table will be saved: You could always write the RAT as a csv file, then join that data later. Then you can join this data in another program later.
How to write raster with attribute table in R?
If px is a single-layer raster (not a RasterBrick), then the RAT you created with the ratify function is the first list element of levels (px), i.e. levels (px) [ [1]]. *Note: make sure the .dbf you create is in the same directory as the GeoTiff you wrote!
Can a raster be written in gtiff format?
You need to ratify your raster and give it some attributes, then write to GTiff format. Both a .tif and a .tif.aux.xml file will be written out, and ArcGIS can use the latter to derive symbology (QGIS sadly doesn’t…). Example:
How to write a raster to a dbf file?
Write the RAT from your RasterLayer object to a .tif.vat.dbf file using the write.dbf function. If px is a single-layer raster (not a RasterBrick), then the RAT you created with the ratify function is the first list element of levels (px), i.e. levels (px) [ [1]].