Dear users, I am trying to export polygons from Arcmap into Spatstat to run some simulations using functions available in Spatstat package.
One particular area to be exported is formed by a number of polygons defining the external boundaries of the area (as a groups of islands) and a number of polygons inside the previous ones, as “holes” not to be considered as part of the area. I have managed to export one of these areas using owin(poly=list()), including in the list the number of external boundaries and holes, but the number of polygons that constitute each area is large and I was wondering if this could be easily done using owin(mask=my_area), using only one single matrix file "my_area" with TRUE, FALSE values defining the whole area. Here is where I got stuck. The file I have created in ArcMap contains three columns: x and y coordinates, and the values at points x[i], y[j] (1 if the area is TRUE and 0 is the area is FALSE). How can I covert this xy file into a mask type "my_area" that I can read using owin(mask=my_area)? Many thanks in advance Javier -- View this message in context: http://www.nabble.com/Spatstat%3A-xy-binary-data-into-mask-type-to-use-in-owin%28mask%3D%29-tp25958088p25958088.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
