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I would like to use the %% operator in the \example{} section of a R documentation file, but it leads to errors when this is processed. How should I do this? -- Edzer

The documentation of sp::over says, for over(x,y): "at the spatial locations of object x retrieves the indexes or attributes from spatial object y"

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On 12/12/2017 11:27 PM, Roger Bivand wrote: > Does sf use morphToESRI()? No. -- Edzer Pebesma Institute for Geoinformatics Heisenbergstrasse 2, 48151 Muenster, Germany Phone: +49 251 8333081

Is there a specific reason why, instead of CHAR(STRING_ELT(chstr, 0)); The S-Plus compatible CHARACTER_POINTER(chstr)[0] does not work in R? -- Edzer

ONKELINX, Thierry wrote: > > gstat on the other hand has no problem with a dataset of 14000 points. > Right; it computes all pairwise distances in a double loop, but never stores them. -- Edzer

Hi, Is there an R package/function that, given a set of polygons (say country boundaries) finds the line set of lines that defines the boundary for each pair of neighbouring countries? -- Edzer

Paul Hiemstra wrote: > > Eelke, if you don't have predictor values for all locations you could > try co-kriging. > which is indeed theoretically the better approach. Thanks, -- Edzer

Tim Keitt wrote: >>spplot(beta, "1") >> >> >Error in `[.data.frame`(as(obj, "data.frame"), zcol) : > undefined columns selected > >I can't seem to fix this. Version: 0.9-10 > > > Thought I fixed this -- how about sp 0.9-11 current...

Tomislav Hengl wrote: > BTW, the book's website is not available. Is the URL correct? > > http://www.asdar-book.org > We plan it to be up and running by the time the book hits the shelves. -- Edzer

Christoph Hofer wrote: > Hello Kenneth > > In the sp package you find the function "point.in.polygon". > Yes, and a convenient wrapper method, called "overlay" which basically overlays a polygon coverage (SpatialPolygonsDataFrame) with a point coverage (SpatialPointsDataFrame). Try > library(sp) > ?overlay...

Monica, gstat has interpolation facilities for real 3D data: IDW, as well as variogram modelling & kriging prediction and simulation. Try: library(gstat) demo(gstat3D) gstat exists as an R package, as well as a stand alone binary. The package is...