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Have you looked at the Contourgenerator transformer?
Or RasterCellCoercer?
Thank you for your suggestions. I tried the contourgenerator transformer. But this transformer creates contours over the area with nodata, which I don't want (see below image). Maybe I am doing something wrong, but I don't see the option to create a contour with the rastercellcoercer.
You can create a polygon that covers the extents of the raster data using the RasterExtentsCoercer set to Data Extents mode. Then, use the Clipper to clip the contours to the polygon.
Thank you cartoscro. This is what I was looking for.
Thank you cartoscro. Your transformers work. The only problem I have is that they don't work for large raster files. 4.2 Mb works, 3.5Gb doesn't.
3.5gb is a large file. Try the workflow below. Splitting the data into chunks may help it to run a little faster. This splits the raster into 4 datasets, but you may need to increase this number.
tiled-raster.jpg