Removed from CRAN

[niekkoelewijn]

Dear authors of the ForestGapR packages,

I am currently carrying out a thesis research project about canopy gap dynamics in managed and unmanaged forests, and I was wondering why the ForestGapR package was removed from CRAN, and whether or not you are working on a new version of the package. If the second is the case, when can we expect it to come? Keep me posted on that!

Kind regards,
Niek

[atkinsjeff]

@niekkoelewijn were you able to install the version from here? And working on fixing the issue now.

[niekkoelewijn]

Yes I was able to install it via GitHub, thank you

I'm using an adapted version of GetForestGaps in my scripts, that is compatible with a terra SpatRaster chm_layer:

getForestGaps <- function(chm_layer, threshold = 10, size = c(1, 10^4)) {
chm_layer[chm_layer > threshold] <- NA
chm_layer[chm_layer <= threshold] <- 1
gaps <- terra::patches(chm_layer, directions = 8, allowGaps = F)
rcl <- terra::freq(gaps)
rcl[, 3] <- rcl[, 3] * terra::res(chm_layer)[1]^2
z <- terra::classify(gaps, rcl = rcl, right = NA)
z[is.na(gaps)] <- NA
gaps[z > size[2]] <- NA
gaps[z < size[1]] <- NA
gaps <- terra::patches(gaps, directions = 8, allowGaps = F)
names(gaps) <- "gaps"
return(gaps)
}

Perhaps useful for other users that want to use the package, but are working with terra in stead of raster

[mcgregorian1]

Thanks @niekkoelewijn for the conversion!