Hi, all I am just beginner to use R. I am working with TIF image file, and the information about the raster is following:
class : RasterLayer dimensions : 11150, 21808, 243159200 (nrow, ncol, ncell) resolution : 30, 30 (x, y) extent : 569685, 1223925, 1513995, 1848495 (xmin, xmax, ymin, ymax) coord. ref. : +proj=aea +lat_1=29.5 +lat_2=45.5 +lat_0=23 +lon_0=-96 +x_0=0 +y_0=0 +datum=NAD83 +units=m +no_defs +ellps=GRS80 +towgs84=0,0,0 data source : C:\Users\Gwan\AppData\Local\Temp\Rtmpg506Ee\raster\r_tmp_2016-09-14_122409_6260_09589.grd names : test_map values : 1, 225 (min, max) attributes : ID OBJECTID Value Red Green Blue Count Class_Name Opacity from: 0 2 1 1 0 0 5982503 Corn 1 to : 48 255 254 0 0 0 10336 Dbl Crop Barley/Soybeans 1 >From this Rasterlayer, I want to convert raster to point for each pixel based on "Value (one of column name)" and create a raster with georeferenced information. I used code as following: RP <- rasterToPoints(KY_raster) However, I could not get the points and have an error message "cannot allocate vector of size 5.4 Gb" and "Your computer is low on memory. Save your files and close these programs". Could someone please help me how I can convert to raster to points?? Best, [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.