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,
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