Greetings
I'm trying to retrieve an image (not yet imported to GRASS) pixel resolution through a Python Script but so far i was unable to figure out a method to do this. Is this possible? I have used g.proj to retrieve its projection and datum but not the Pixel resolution.
THanks for your help
Best regards,
Antonio R.
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If you use gdalinfo on an image, it will output the "Pixel Size".
Hope that helps.
Mark
2010/6/28 António Rocha <antonio.rocha@deimos.com.pt>:
Greetings
I'm trying to retrieve an image (not yet imported to GRASS) pixel resolution
through a Python Script but so far i was unable to figure out a method to do
this. Is this possible? I have used g.proj to retrieve its projection and
datum but not the Pixel resolution.
THanks for your helpBest regards,
Antonio R.__________ Information from ESET NOD32 Antivirus, version of virus signature
database 5234 (20100628) __________The message was checked by ESET NOD32 Antivirus.
_______________________________________________
grass-user mailing list
grass-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/grass-user
Olá António Rocha,
This works for me, give it a try:###########################################################
import os
try:
from osgeo import gdal
from osgeo import osr
except:
import gdal
import osr
def gdalinfo(pasta):
‘’‘Le metadados com GDAL’‘’
ficheiros = os.listdir(pasta)
for ficheiro in ficheiros:
if ficheiro[-3:].lower() == ‘tif’:
filename = pasta+ficheiro
dataset = gdal.Open(filename, gdal.GA_ReadOnly)
if dataset is None:
print ‘Nao foi possivel abrir a imagem %s!’ % ficheiro
RasterXSize = dataset.RasterXSize
RasterYSize = dataset.RasterYSize
print RasterXSize,RasterYSize
print ‘\nfim’
return
gdalinfo(‘/home/eloi/Geo/raster/20790/’)
###########################################################
2010/6/28 Mark Seibel <mseibel@gmail.com>
If you use gdalinfo on an image, it will output the “Pixel Size”.
Hope that helps.
Mark2010/6/28 António Rocha <antonio.rocha@deimos.com.pt>:
Greetings
I’m trying to retrieve an image (not yet imported to GRASS) pixel resolution
through a Python Script but so far i was unable to figure out a method to do
this. Is this possible? I have used g.proj to retrieve its projection and
datum but not the Pixel resolution.
THanks for your helpBest regards,
Antonio R.__________ Information from ESET NOD32 Antivirus, version of virus signature
database 5234 (20100628) __________The message was checked by ESET NOD32 Antivirus.
grass-user mailing list
grass-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/grass-user
grass-user mailing list
grass-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/grass-user
–
Eloi Ribeiro
GIS Analyst
39,45º -4,40º
http://eloiribeiro.wordpress.com
Hello Mark
I know that I can retrieve that information with gdalinfo. But I need to have it on a variable and get/use it in a Python Script.
Mark Seibel wrote:
If you use gdalinfo on an image, it will output the "Pixel Size".
Hope that helps.
Mark2010/6/28 António Rocha <antonio.rocha@deimos.com.pt>:
Greetings
I'm trying to retrieve an image (not yet imported to GRASS) pixel resolution
through a Python Script but so far i was unable to figure out a method to do
this. Is this possible? I have used g.proj to retrieve its projection and
datum but not the Pixel resolution.
THanks for your helpBest regards,
Antonio R.__________ Information from ESET NOD32 Antivirus, version of virus signature
database 5234 (20100628) __________The message was checked by ESET NOD32 Antivirus.
_______________________________________________
grass-user mailing list
grass-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/grass-user__________ Information from ESET NOD32 Antivirus, version of virus signature database 5234 (20100628) __________
The message was checked by ESET NOD32 Antivirus.
__________ Information from ESET NOD32 Antivirus, version of virus signature database 5235 (20100628) __________
The message was checked by ESET NOD32 Antivirus.