search for: getrasterdata

...;)) Error in readAsciiGrid("F:/GIS.LandcoverEuropeForRisk/Sept10kmmaps/Sp10KPointID.aux") : object 'cellsize' not found My original data in Arc GIS is have a cell size an i'mm curious as to how to make sure all the details are included. I also tried to use Spain10km<-getRasterData("F://RMap//sp10kpointid1", ,band=NULL, offset=c(0,0),region.dim=dim(sp10kpointid1, output.dim=region.dim,interleave=c(0,0),as.is=FALSE)) Error in assertClass(dataset, "GDALReadOnlyDataset") : Object is not a member of class GDALReadOnlyDataset Spain10km <- system.file(&q...

...DriverLongName(getDriver(x)) [1] "USGS Optional ASCII DEM" > saveDataset(x,"xxx.data") Error in .local(.Object, ...) : GDAL Error 6: GDALDriver::Create() ... no create method implemented for this format. Or should the dataset be raster data? Then I get: > rd<-getRasterData(x) > saveDataset(rd,"test.data") Error in .assertClass(dataset, "GDALReadOnlyDataset") : Object is not a member of class GDALReadOnlyDataset Does anybody see what am I doing wrong? Thanks. Hana Sevcikova

...0 columns 660 bands 1 ll.x -55.5 ll.y -14.5 res.x 0.008333334 res.y 0.008333334 oblique.x 0 oblique.y 0 driver GTiff projection +proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs file dummy.tif > nrow(a) [1] 420 > ncol(a) [1] 660 > dummy = getRasterData(a) > nrow(dummy) [1] 660 > ncol(dummy) [1] 420 > test = matrix(0, nrow=420, ncol=660) > putRasterData(a,test) Error in putRasterData(a, test) : GDAL Error 5: Access window out of range in RasterIO(). Requested (0,0) of size 420x660 on raster of 660x420. Also, it appears that the l...

Dear all, I have a so large image (43,000 x 18,000 pixels) and I need clip this image with a smallest one (1000x1000 pixels). I can read the second image using rgdal package. But the first image can´t be read on my system because if memory limitation (I have about 2GB availabe). So I would like hear from you if anyone have some suggestin in this regards. I have also ArcGis 8.6 ans Erdas 8.3

Hi there I'm looking for a function to read PNG-bitmap-images from a file into R. I only found: - the pixmap-package which cannot import png or similar formats - the rimage-package which can only import lossy jpeg-images (the convertion from png to jpeg modifies the data!) Is there any possibility to read PNG-files? Thanks for any help Dominic Sydler