pktools  2.6.7
Processing Kernel for geospatial data
examples_pksetmask

Examples of pksetmask

Using a single mask

With a single mask you can provide as many triples (–operator, –msknodata, –nodata) as you wish. All operators work simultaneously on that mask. Caution: the first operator that tests true will be selected. This is explained in the next example:

1 pksetmask -i input.tif -m mask.tif --operator='>' --msknodata 0 --nodata 0 --operator='>' --msknodata 10 --nodata 10 -o output.tif

Warning: second operator will never test true as first will supersede!

1 pksetmask -i input.tif -m mask.tif --operator='>' --msknodata 10 --nodata 10 --operator='>' --msknodata 0 --nodata 1 -output.tif

OK: values above 10 will be 10, values between 0 and 10 will be 1

Using multiple masks

With multiple masks, you can use one triple (–operator, –msknodata, –nodata) for each corresponding mask (following the same order of input). If the number of triples is not equal to the number of masks, then only the first triple is used for all masks simultaneously

1 pksetmask -i input.tif -m mask1.tif --operator '>' --msknodata 250 --nodata 1 -m mask2.tif --operator '>' --msknodata 100 --nodata 2 -o output.tif

If mask1.tif is above 250, the output will be 1. If mask2 is above 100, the output will be 2. If both operators test true, the first will supersede (output will be 1)

1 pksetmask -i input.tif -m mask1.tif -m mask2.tif --operator '>' --msknodata 250 --nodata 1 -o output.tif

If either mask1.tif or mask2.tif is above 250, the output will be 1

More examples

1 pksetmask -i input.tif -m mask.tif -o output.tif -ot Byte --msknodata 0 -nodata 255

copy pixel values from input.tif to output.tif, applying mask.tif, setting all values to 255 where mask is 0.

1 pksetmask -i input.tif -m mask.tif -o output.tif -ot Byte --msknodata 1 -nodata 255 --operator '!'

copy values from input.tif to output.tif, but set all values to 255 if mask is not 1

1 pksetmask -i input.tif -m mask1.tif -m mask2.tif -o output.tif -ot Byte --msknodata 0 -nodata 255

Application of two masks. Copy pixel values from input.tif to output.tif, setting all values to 255 where either mask is 0.

1 pksetmask -i input.tif -m mask.tif -o output.tif -ot Byte --msknodata 0 --msknodata 1 -nodata 255 -nodata 255

copy pixel values from input.tif to output.tif, applying single masks, setting all values to 255 where mask is either 0 or 1.