grdfilter: Clarify the syntax for the weight file when custom or operator filters are used #8896
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joa-quim
approved these changes
Feb 9, 2026
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https://docs.generic-mapping-tools.org/dev/grdfilter.html
The option syntax is
-Fxwidth[/width2][+c|+h|+l|+qquantile|+u], but the documentation says something like:It's unclear how weight can be passed. This PR clarifies the syntax is -Ffweight.