On Tue, 1 Oct 2019, Rich Shepard wrote:
However, I have a question (for anyone to answer) about working with this
basin topography.
There are 70 individual raster maps within the mask of the basin's watershed
boundary. Am I correct that speed-issues aside, I need to run r.buildvrt so
I have a single map as input to modules such as r.info (to identify the
highest elevation), r.slope, and others? While I understand that a mask
limits analyses to its area that is based on a single map extending beyond
the mask and not a collection of 70 'tiles'. Am I correct?
No, I'm not correct. I had thought r.patch only filled holes in one raster
map with values from a second raster map. Re-reading the manual page I
learned that when there are no holes it will glue adjacent maps together to
form one large one.
Regards,
Rich
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