search for: hijmans

...p; 64 bits) and on R-devel that is not present in R 13.0 and before. The below creates a plot with many white lines, horizontal and vertical, more or less regularly spaced. The effect is particularly dramatic when the plotting window is made very small. image(t(volcano)[ncol(volcano):1,]) Robert Hijmans University of California, Davis > sessionInfo() R version 2.13.1 (2011-07-08) Platform: x86_64-pc-mingw32/x64 (64-bit) locale: [1] LC_COLLATE=English_United States.1252 [2] LC_CTYPE=English_United States.1252 [3] LC_MONETARY=English_United States.1252 [4] LC_NUMERIC=C [5] LC_TIME=English_Unit...

Hi all, I 'm doing the exercise given in the 'SDM with R' (Robert J. Hijmans and Jane Elith), chapter 4.2, regarding extracting values . I tried to do the same using my own data as well. Each cases i received the following error message ; "Error in .xyValues(x, as.matrix(y), ...) : xy should have 2 columns only. Found these dimensions: Can some body explain me how t...

...resolution : 36, 18 (x, y) extent : -180, 180, -90, 90 (xmin, xmax, ymin, ymax) coord. ref. : +proj=longlat +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0 data source : in memory names : layer values : 1, 100 (min, max) Any idea about what I can do to get rid of this? Thanks, Robert Hijmans [[alternative HTML version deleted]]

I get an error when using self-defined (not standard) functions with mapply with S4 objects from the raster package that I develop: "Error in as.character(sys.call(sys.parent())[[1]]) : cannot coerce type 'closure' to vector of type 'character'". Does anyone understand why? The problem is illustrated below. Thanks, Robert > # First a general example that works

?dir.create (part of the base package) says that: "dir.create and Sys.chmod return a logical vector indicating which operation succeeded for each of the files attempted" However, on my system it returns nothing (whether successful or not): > dir.create(":::@!#!::") > dir.create('b') > sessionInfo() R version 2.9.0 (2009-04-17) i386-pc-mingw32 locale:

I had difficulties running R CMD check and build on windows 7. The problem seems to be that the script creates folders to which nobody has any access permissions (not even read). So the script can not delete these folders or open files. This worked for me: Go to the properties of the root folder of your R project (e.g. "D:\R"). Change the settings so that this folder and its

Dear R-helpers and Dr. Hijmans, I can not invoke maxent() in GNU Linux. Could you give me any directions on that? There is maxent.jar in version 3.3.3e in the right folder. ######################################## R: > jar <- paste(system.file(package="dismo"), "/java/maxent.jar", sep='') >...

Buenas días me gustaria saber cual es la libreria mas actual que contiene al algoritmo de maxima entropia que permite modelar nichos ecologicos; a su vez que libreria presenta mejor temática en la representacion de mapas. Saludos¡ [[alternative HTML version deleted]]

This code will read binary file and display it as a map. may problem is that this code is using a continuous colour scheme, even though I have discrete data (which is a classification scheme). How can I map numbers to colours with raster? Please require(raster) conne <- file("C:\\lai.bin", "rb") sd<- readBin(conne, integer(), size=1, n=360*720, signed=F)

...is package allows to handle quaternions with R nearly as simple as real or complex numbers. * R4dfp (0.1-9) Kevin P. Barry http://crantastic.org/packages/R4dfp This package provides an R interface with 2-part 4dfp MRI images (.4dfp.ifh and .4dfp.img files.) * raster (1.2-6) Robert J. Hijmans http://crantastic.org/packages/raster Package for reading, writing, and manipulating raster (grid) type geographic (spatial) data * RcmdrPlugin.doex (0.1.0) Erin Hodgess http://crantastic.org/packages/RcmdrPlugin-doex This package provides an Rcmdr &quot;plug-in&quot; based o...