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Results tagged with r
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user 54187
Statistical computing language and software environment.
5
votes
1
answer
3k
views
Identifying value of closest non-NA pixel
See below for an example of the distance function:
library(raster)
r <- raster(ncol=36,nrow=18)
r[] <- NA
r[500] <- 1
r[100] <-2
dist <- distance(r) #calculates the distance to … the nearest non-NA pixel
Is there a function in a different package that does this (I'd like to stay in the R environment)? …
- 115
6
votes
2
answers
5k
views
Calculating Shannon's diversity using moving window in R
I have a raster where each pixel is a particular vegetation type. I'm interested in the diversity of vegetation types around each pixel.
I'd like to assign a Shannon's diversity index value (see thi …
- 115