The section https://rspatial.org/terra/spatial/8-rastermanip.html#spatial-configuration talks about the functions patches, boundaries and area -- and is then followed by an example for zonal (that doesn't use any of the above), without any comment.

The text in 2_sdm_occdata.rmd still references wrld_simpl in three places, but the code has been updated to use geodata::world.

You also have one reference to gridSample, but don't mention dismo anymore. I think this is also an outdated line:

https://github.com/rspatial/rspatial-terra-web/blob/33a26aa24527e7e61114ccdb2e949173f659d640/source/sdm/_R/2_sdm_occdata.rmd#L240C44-L240C44

Thanks for maintaining this great resource!

Reading through https://rspatial.org/terra/spatial/8-rastermanip.html I not only came across the SpatRaster class, but apparently also raster and Raster. Sometimes this confused me. Especially I didn't know if rasterand Raster are the same or not.

Examples:

Many generic functions that allow for simple and elegant raster algebra have been implemented for Raster objects [...] In these functions you can mix raster objects with numbers, as long as the first argument is a raster object. [...] Create an empty SpatRaster and assign values to cells.

The origin of a Raster object is the point closest to (0, 0) that you could get if you moved from a corner of a SpatRaster toward that point in steps of the x and y resolution.

The crop function lets you take a geographic subset of a larger raster object. You can crop a SpatRaster by providing an extent object or another spatial object from which an extent can be extracted (objects from classes deriving from Raster and from Spatial in the sp package).

Could you clarify the connection between these somewhere? It may be obvious for you developers, but it isn't for newbies.

Sorry if this already exists, but I didn't come across it in https://rspatial.org/terra/spatial/2-spatialdata.html nor https://rspatial.org/terra/spatial/4-rasterdata.html.

Hello,

Terra documentation seems to falsely point to clump (a raster method) when it should be patches. I assume this is an error?

Many thanks for the maintenance of this resource.

I found the following in your (wonderful!) online manual:

If I'm not mistaken, this accomplishes the same thing as:

nc <- rasterize(crime, r, fun = length, background=0) 

Although perhaps the more complex form is useful as a clue for how to use arbitrary functions in rasterize? If that's your intent, please ignore this issue!

Thanks again for all your work building and maintaining these tools!

typo in description of repository: "in stead". Not sure I can open a pull request.

Hi, I have tried to download the data from https://rspatial.org/terra/rs/1-introduction.html#data using:

dir.create("data", showWarnings = FALSE)
if (!file.exists("data/rs/samples.rds")) {
    download.file("https://biogeo.ucdavis.edu/data/rspatial/rs.zip", dest = "data/rs.zip")
    unzip("data/rs.zip", exdir="data")
}

but get this error:

trying URL 'https://biogeo.ucdavis.edu/data/rspatial/rs.zip'
Content type 'application/zip' length 187858667 bytes (179.2 MB)
downloaded 132.9 MB

Error in download.file("https://biogeo.ucdavis.edu/data/rspatial/rs.zip", :
download from 'https://biogeo.ucdavis.edu/data/rspatial/rs.zip' failed
In addition: Warning messages:
1: In download.file("https://biogeo.ucdavis.edu/data/rspatial/rs.zip", :
downloaded length 139395072 != reported length 187858667
2: In download.file("https://biogeo.ucdavis.edu/data/rspatial/rs.zip", :
URL 'https://data.biogeo.ucdavis.edu/data/rspatial/rs.zip': Timeout of 60 seconds was reached

Unzipping the file does not work:

> unzip("data/rs.zip", exdir="data")
Warning message:
In unzip("data/rs.zip", exdir = "data") :
  error 1 in extracting from zip file

Same when using the terminal:

$ unzip rs.zip
Archive:  rs.zip
  End-of-central-directory signature not found.  Either this file is not
  a zipfile, or it constitutes one disk of a multi-part archive.  In the
  latter case the central directory and zipfile comment will be found on
  the last disk(s) of this archive.
unzip:  cannot find zipfile directory in one of rs.zip or
        rs.zip.zip, and cannot find rs.zip.ZIP, period.

In https://rspatial.org/terra/spatial/7-vectmanip.html#records
Where it says: "See ?select for interactively"

Might be '?sel', instead. (although '?sel' doens't correctly show any help page). Anyway, sel(df) works fine selecting geometries in a plot.

My R version 4.0.4, terra_1.7-3

PS. Sorry I forgot to ask if it is useful or appropiate to inform about typos here as issues.
PPS. Here is another dummy typo: "For this example, we first we get the name of an example file [...]" at https://rspatial.org/terra/spatial/8-rastermanip.html#creating-spatraster-objects.