Revisions to How can I export raster data from Arcmap to an R *.grd file format?

Commonmark migration

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edited Jun 11, 2020 at 15:27

1

###Edit###

Edit

A more convenient solution for reading is provided by @RobertH elsewhere in this thread. You can read the Arc* grid dataset directly using the same approach described here: simply reference the folder in which the grid datafiles lie in the raster command.

###Original reply###

Original reply

In Arc*, use the Raster to ASCII tool (found in Conversion Tools|From Raster) to export a grid in ASCII format.

In R, load the raster and rgdal packages, then read the raster using the raster function, as in

r <- raster("G:/USGS/DEM/7_5min/VA/albem_s1.txt")
plot(r)

To create the .grd version, use writeRaster, as in

writeRaster(r, "G:/USGS/DEM/7_5min/VA/albem_s1.grd")

The console response will describe what's in the .grd part of the output (the data are in a .gri file), as in

class       : RasterLayer 
filename    : G:/USGS/DEM/7_5min/VA/albem_s1.grd 
nrow        : 1415 
ncol        : 1133 
ncell       : 1603195 
min value   : 70 
max value   : 960 
projection  : +proj=utm +zone=17 +ellps=GRS80 +datum=NAD83 +units=m +no_defs +towgs84=0,0,0 
xmin        : 686280 
xmax        : 720270 
ymin        : 4179990 
ymax        : 4222440 
xres        : 30 
yres        : 30

###Edit###

A more convenient solution for reading is provided by @RobertH elsewhere in this thread. You can read the Arc* grid dataset directly using the same approach described here: simply reference the folder in which the grid datafiles lie in the raster command.

###Original reply###

In Arc*, use the Raster to ASCII tool (found in Conversion Tools|From Raster) to export a grid in ASCII format.

In R, load the raster and rgdal packages, then read the raster using the raster function, as in

r <- raster("G:/USGS/DEM/7_5min/VA/albem_s1.txt")
plot(r)

To create the .grd version, use writeRaster, as in

writeRaster(r, "G:/USGS/DEM/7_5min/VA/albem_s1.grd")

The console response will describe what's in the .grd part of the output (the data are in a .gri file), as in

class       : RasterLayer 
filename    : G:/USGS/DEM/7_5min/VA/albem_s1.grd 
nrow        : 1415 
ncol        : 1133 
ncell       : 1603195 
min value   : 70 
max value   : 960 
projection  : +proj=utm +zone=17 +ellps=GRS80 +datum=NAD83 +units=m +no_defs +towgs84=0,0,0 
xmin        : 686280 
xmax        : 720270 
ymin        : 4179990 
ymax        : 4222440 
xres        : 30 
yres        : 30

Edit

A more convenient solution for reading is provided by @RobertH elsewhere in this thread. You can read the Arc* grid dataset directly using the same approach described here: simply reference the folder in which the grid datafiles lie in the raster command.

Original reply

In Arc*, use the Raster to ASCII tool (found in Conversion Tools|From Raster) to export a grid in ASCII format.

In R, load the raster and rgdal packages, then read the raster using the raster function, as in

r <- raster("G:/USGS/DEM/7_5min/VA/albem_s1.txt")
plot(r)

To create the .grd version, use writeRaster, as in

writeRaster(r, "G:/USGS/DEM/7_5min/VA/albem_s1.grd")

The console response will describe what's in the .grd part of the output (the data are in a .gri file), as in

class       : RasterLayer 
filename    : G:/USGS/DEM/7_5min/VA/albem_s1.grd 
nrow        : 1415 
ncol        : 1133 
ncell       : 1603195 
min value   : 70 
max value   : 960 
projection  : +proj=utm +zone=17 +ellps=GRS80 +datum=NAD83 +units=m +no_defs +towgs84=0,0,0 
xmin        : 686280 
xmax        : 720270 
ymin        : 4179990 
ymax        : 4222440 
xres        : 30 
yres        : 30

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Source Link

edited Apr 13, 2017 at 12:34

Community Bot

1

###Edit###

A more convenient solution for reading is provided by @RobertH elsewhere in this thread elsewhere in this thread. You can read the Arc* grid dataset directly using the same approach described here: simply reference the folder in which the grid datafiles lie in the raster command.

###Original reply###

In Arc*, use the Raster to ASCII tool (found in Conversion Tools|From Raster) to export a grid in ASCII format.

In R, load the raster and rgdal packages, then read the raster using the raster function, as in

r <- raster("G:/USGS/DEM/7_5min/VA/albem_s1.txt")
plot(r)

To create the .grd version, use writeRaster, as in

writeRaster(r, "G:/USGS/DEM/7_5min/VA/albem_s1.grd")

The console response will describe what's in the .grd part of the output (the data are in a .gri file), as in

class       : RasterLayer 
filename    : G:/USGS/DEM/7_5min/VA/albem_s1.grd 
nrow        : 1415 
ncol        : 1133 
ncell       : 1603195 
min value   : 70 
max value   : 960 
projection  : +proj=utm +zone=17 +ellps=GRS80 +datum=NAD83 +units=m +no_defs +towgs84=0,0,0 
xmin        : 686280 
xmax        : 720270 
ymin        : 4179990 
ymax        : 4222440 
xres        : 30 
yres        : 30

###Edit###

A more convenient solution for reading is provided by @RobertH elsewhere in this thread. You can read the Arc* grid dataset directly using the same approach described here: simply reference the folder in which the grid datafiles lie in the raster command.

###Original reply###

In Arc*, use the Raster to ASCII tool (found in Conversion Tools|From Raster) to export a grid in ASCII format.

In R, load the raster and rgdal packages, then read the raster using the raster function, as in

r <- raster("G:/USGS/DEM/7_5min/VA/albem_s1.txt")
plot(r)

To create the .grd version, use writeRaster, as in

writeRaster(r, "G:/USGS/DEM/7_5min/VA/albem_s1.grd")

The console response will describe what's in the .grd part of the output (the data are in a .gri file), as in

class       : RasterLayer 
filename    : G:/USGS/DEM/7_5min/VA/albem_s1.grd 
nrow        : 1415 
ncol        : 1133 
ncell       : 1603195 
min value   : 70 
max value   : 960 
projection  : +proj=utm +zone=17 +ellps=GRS80 +datum=NAD83 +units=m +no_defs +towgs84=0,0,0 
xmin        : 686280 
xmax        : 720270 
ymin        : 4179990 
ymax        : 4222440 
xres        : 30 
yres        : 30

###Edit###

A more convenient solution for reading is provided by @RobertH elsewhere in this thread. You can read the Arc* grid dataset directly using the same approach described here: simply reference the folder in which the grid datafiles lie in the raster command.

###Original reply###

In Arc*, use the Raster to ASCII tool (found in Conversion Tools|From Raster) to export a grid in ASCII format.

In R, load the raster and rgdal packages, then read the raster using the raster function, as in

r <- raster("G:/USGS/DEM/7_5min/VA/albem_s1.txt")
plot(r)

To create the .grd version, use writeRaster, as in

writeRaster(r, "G:/USGS/DEM/7_5min/VA/albem_s1.grd")

The console response will describe what's in the .grd part of the output (the data are in a .gri file), as in

class       : RasterLayer 
filename    : G:/USGS/DEM/7_5min/VA/albem_s1.grd 
nrow        : 1415 
ncol        : 1133 
ncell       : 1603195 
min value   : 70 
max value   : 960 
projection  : +proj=utm +zone=17 +ellps=GRS80 +datum=NAD83 +units=m +no_defs +towgs84=0,0,0 
xmin        : 686280 
xmax        : 720270 
ymin        : 4179990 
ymax        : 4222440 
xres        : 30 
yres        : 30

added 340 characters in body

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edited Apr 10, 2012 at 19:33

whuber

70.2k
16
187
282

In Arc, use the Raster to ASCII tool (found in Conversion Tools|From Raster) to export a grid in ASCII format.* ###Edit###

A more convenient solution for reading is provided by @RobertH elsewhere in this thread. You can read the Arc* grid dataset directly using the same approach described here: simply reference the folder in which the grid datafiles lie in the raster command.

###Original reply###

In Arc*, use the Raster to ASCII tool (found in Conversion Tools|From Raster) to export a grid in ASCII format.

In R, load the raster and rgdal packages, then read the raster using the raster function, as in

r <- raster("G:/USGS/DEM/7_5min/VA/albem_s1.txt")
plot(r)

To create the .grd version, use writeRaster, as in

writeRaster(r, "G:/USGS/DEM/7_5min/VA/albem_s1.grd")

The console response will describe what's in the .grd part of the output (the data are in a .gri file), as in

class       : RasterLayer 
filename    : G:/USGS/DEM/7_5min/VA/albem_s1.grd 
nrow        : 1415 
ncol        : 1133 
ncell       : 1603195 
min value   : 70 
max value   : 960 
projection  : +proj=utm +zone=17 +ellps=GRS80 +datum=NAD83 +units=m +no_defs +towgs84=0,0,0 
xmin        : 686280 
xmax        : 720270 
ymin        : 4179990 
ymax        : 4222440 
xres        : 30 
yres        : 30

In Arc, use the Raster to ASCII tool (found in Conversion Tools|From Raster) to export a grid in ASCII format.*

In R, load the raster and rgdal packages, then read the raster using the raster function, as in

r <- raster("G:/USGS/DEM/7_5min/VA/albem_s1.txt")
plot(r)

To create the .grd version, use writeRaster, as in

writeRaster(r, "G:/USGS/DEM/7_5min/VA/albem_s1.grd")

The console response will describe what's in the .grd part of the output (the data are in a .gri file), as in

class       : RasterLayer 
filename    : G:/USGS/DEM/7_5min/VA/albem_s1.grd 
nrow        : 1415 
ncol        : 1133 
ncell       : 1603195 
min value   : 70 
max value   : 960 
projection  : +proj=utm +zone=17 +ellps=GRS80 +datum=NAD83 +units=m +no_defs +towgs84=0,0,0 
xmin        : 686280 
xmax        : 720270 
ymin        : 4179990 
ymax        : 4222440 
xres        : 30 
yres        : 30

###Edit###

A more convenient solution for reading is provided by @RobertH elsewhere in this thread. You can read the Arc* grid dataset directly using the same approach described here: simply reference the folder in which the grid datafiles lie in the raster command.

###Original reply###

In Arc*, use the Raster to ASCII tool (found in Conversion Tools|From Raster) to export a grid in ASCII format.

In R, load the raster and rgdal packages, then read the raster using the raster function, as in

r <- raster("G:/USGS/DEM/7_5min/VA/albem_s1.txt")
plot(r)

To create the .grd version, use writeRaster, as in

writeRaster(r, "G:/USGS/DEM/7_5min/VA/albem_s1.grd")

The console response will describe what's in the .grd part of the output (the data are in a .gri file), as in

class       : RasterLayer 
filename    : G:/USGS/DEM/7_5min/VA/albem_s1.grd 
nrow        : 1415 
ncol        : 1133 
ncell       : 1603195 
min value   : 70 
max value   : 960 
projection  : +proj=utm +zone=17 +ellps=GRS80 +datum=NAD83 +units=m +no_defs +towgs84=0,0,0 
xmin        : 686280 
xmax        : 720270 
ymin        : 4179990 
ymax        : 4222440 
xres        : 30 
yres        : 30

Source Link

created Nov 9, 2011 at 15:57

whuber

70.2k
16
187
282

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