[R] Errors in Raster to Point

GwanSeon Kim tatekorea at gmail.com
Mon Sep 19 22:34:35 CEST 2016

Hi, all
I am just beginner to use R.
I am working with TIF image file, and the information about the raster is

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 :
names       : test_map
values      : 1, 225  (min, max)
attributes  :
       ID OBJECTID Value Red Green Blue   Count               Class_Name
 from:  0        2     1   1     0    0 5982503                     Corn
 to  : 48      255   254   0     0    0   10336 Dbl Crop Barley/Soybeans

>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??

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