python.raster Namespace Reference

Functions
def	raster_history
	Set the command history for a raster map to the command used to invoke the script (interface to `r.support'). More...
def	raster_info
	Return information about a raster map (interface to `r.info'). More...
def	mapcalc
	Interface to r.mapcalc. More...
def	mapcalc_start
	Interface to r.mapcalc, doesn't wait for it to finish, returns Popen object. More...

Function Documentation

def python.raster.mapcalc	(		exp,
			quiet = False,
			verbose = False,
			overwrite = False,
			kwargs
	)

Interface to r.mapcalc.

Parameters

exp	expression
kwargs

Definition at line 92 of file raster.py.

References python.core.fatal(), and python.core.write_command().

def python.raster.mapcalc_start	(		exp,
			quiet = False,
			verbose = False,
			overwrite = False,
			kwargs
	)

Interface to r.mapcalc, doesn't wait for it to finish, returns Popen object.

>>> expr1 = '"%s" = "%s" * 10' % (output, input)
>>> expr2 = '...'   # etc.
>>> # launch the jobs:
>>> p1 = grass.mapcalc_start(expr1)
>>> p2 = grass.mapcalc_start(expr2)   # etc.
...
>>> # wait for them to finish:
>>> p1.wait()
>>> p2.wait()   # etc.

Parameters

exp	expression
kwargs

Returns

Popen object

Definition at line 113 of file raster.py.

References python.core.feed_command().

def python.raster.raster_history

(

map

)

Set the command history for a raster map to the command used to invoke the script (interface to `r.support').

Parameters

map

map name

Returns

True on success

False on failure

Definition at line 36 of file raster.py.

References python.core.gisenv(), python.core.run_command(), and python.core.warning().

def python.raster.raster_info

(

map

)

Return information about a raster map (interface to `r.info').

Example:

>>> grass.raster_info('elevation')
{'north': 228500.0, 'timestamp': '"none"', 'min': 55.578792572021499,
'datatype': 'FCELL', 'max': 156.32986450195301, 'ewres': 10.0,
'vertical_datum': '', 'west': 630000.0, 'units': '',
'title': 'South-West Wake county: Elevation NED 10m (elev_ned10m)',
'east': 645000.0, 'nsres': 10.0, 'south': 215000.0}

Parameters

map

map name

Returns

parsed raster info

Definition at line 56 of file raster.py.

References python.core.float_or_dms(), python.core.parse_key_val(), and python.core.read_command().