Search Archives

All, There seems to be a hullaboo about a vulnerability in R when deserializing untrusted data: https://hiddenlayer.com/research/r-bitrary-code-execution https://nvd.nist.gov/vuln/detail/CVE-2024-27322 https://www.kb.cert.org/vuls/id...

All, I need to create XML metadata for some of my outputs (mostly rasters) following the US government standard (FGDC): https://www.fgdc.gov/standards/projects/FGDC-standards-projects/metadata/base-metadata/index_html In researching what my options are...

You might check out the dismo package and the vignette it has on species distribution modeling. https://cran.r-project.org/web/packages/dismo/index.html Tim Date: Mon, 10 Apr 2017 09:12:54 +0000 (UTC) From: Soufianou Abou...

If you only want the character strings, this seems a little simpler: > strsplit("a bc,def, adef ,,gh", "[ ,]+", perl=T) [[1]] [1] "a" "bc" "def" "adef" "gh" If you need delimeters (the commas) you could then add them back in...

All, Given a tessellated set of polygons, each with an attribute of sample size, I want to aggregate these polygons into groups such that the sum of the sample size values reaches a certain threshold while simultaneously maximizing the number...

Hi all, I have a raster brick for which I'd like to extract data from each layer to a point dataset, but I'd like to use method="simple" for some of the layers and method="bilinear" for others...

All - Consider clusters of points in an NMDS with those clusters determined in some way (I'll use hclust below). Then consider plotting the species on that ordination. I'd like to automatically find which species are 'most associated' with...

Howdy all -? There's probably a way to do this much? more simply than I've figured it out, so it's a bit embarrassing but here goes. I'm getting data out of a shiny app that looks like...

In y <- substr(x, i, 1) your third integer needs to be the location not the number of digits, so change it to y <- substr(x, i, i) and you should get what you want. Cheers, Tim > Date: Sun, 21...

All, I'm stymied by this, I expect there is a simple solution. I am trying to stack/brick some very large rasters (26 GB in native R [.gri] format!). But the error does not imply there's a problem...

Dear list, I am exploring the different options for reading parts of large imagery object in stars, as discussed here: https://r-spatial.github.io/stars/articles/proxy.html My ultimate goal is to read into RAM only a clipped...

Francisco, That's right, instead of cropping by longitude and latitude, you'll need to define the model output area by another spatial layer that represents the coastline and the certain distance inland. To get that (your targeted modeling area...

Kevin, To get the basemap in plot mode you need to download the tiles using read_osm. This works for me, I Simplified a bit: library(sf) library(tmap) library(tigris) options(tigris_use_cache = TRUE) library(tmaptools) ## Get an...

You fed it two characters, "dash" and "space" and it only wanted one character so it truncated to the first character and warned you that that's what it did. If you had your space before the dash, it would...

Eduard, Yes, indicator species may help - and indeed, perhaps all I need are some pointers from the community table produced in vegan: vegemite and tabasco. I'm working down that path now. Mike, Aha - yes, distance from the centroid to...

You also should be able to reference locations from the 'root' of your project using the here() package. https://here.r-lib.org/ Best, Tim Howard > Date: Thu, 2 Apr 2020 10:21:47 +0100 > From: Rui Barradas <ruipbarradas at...

I'm kind of at a loss as to why "Error in if (common.len == 1L) unlist(x, recursive = FALSE) else if (common.len : missing value where TRUE/FALSE needed" means "your system can't handle such big files" but...

Robert, Very slick. Thank you! I had thought about splitting by method and running only twice, but hadn't come up with an approach yet. Perfect. Thanks again, Tim > -----Original Message----- > From: Robert J. Hijmans [mailto:r.hijmans at gmail...

I believe the missing shapes are because you had set alpha=0 for the last geom point. I expect there are better ways, but one way to handle it would be to avoid the filtering, adding columns with med and...

And I just realized an easier way to get a bounding box for the basemap is to use the spatial information you already have in the polygon: basem <- read_osm(bb(rw_tract, ext = 1.5)) The 'ext' option allows...