Vjylku

I am using python 2.7 and have gdal installed. I want to read an entire .jpg image at once and so I used statement

import gdal

from gdalconst import *

driver = gdal.GetDriverByName('JPEG')

driver.Register()

dataset = gdal.Open('1.jpg', GA_ReadOnly)

cols = dataset.RasterXSize

rows = dataset.RasterYSize

bands = dataset.RasterCount

geotransform = dataset.GetGeoTransform()

originX = geotransform[0]

originY = geotransform[3]

pixelWidth = geotransform[1]

pixelHeight = geotransform[5]

band = dataset.GetRasterBand(1)

data = band.ReadAsArray(0, 0, cols, rows)

but I am getting an import error for gdal_array.

ImportError                               Traceback (most recent call last)

<ipython-input-7-6a16047a395b> in <module>()

----> 1 data = band.ReadAsArray(0, 0, cols, rows)



C:UsersDELLAnacondalibsite-packagesosgeogdal.pyc in ReadAsArray(self, xoff,        yoff, win_xsize, win_ysize, buf_xsize, buf_ysize, buf_obj)

1174     def ReadAsArray(self, xoff=0, yoff=0, win_xsize=None, win_ysize=None,

1175                     buf_xsize=None, buf_ysize=None, buf_obj=None):

-> 1176         import gdalnumeric

1177 

1178         return gdalnumeric.BandReadAsArray( self, xoff, yoff,



C:UsersDELLAnacondalibsite-packagesosgeogdalnumeric.py in <module>()

----> 1 from gdal_array import *

2 from numpy import *



C:UsersDELLAnacondalibsite-packagesosgeogdal_array.py in <module>()

 24                 fp.close()

 25             return _mod

 ---> 26     _gdal_array = swig_import_helper()

 27     del swig_import_helper

 28 else:



 C:UsersDELLAnacondalibsite-packagesosgeogdal_array.py in swig_import_helper()

 16             fp, pathname, description = imp.find_module('_gdal_array', [dirname(__file__)])

 17         except ImportError:

 ---> 18             import _gdal_array

 19             return _gdal_array

 20         if fp is not None:



 ImportError: No module named _gdal_array

Please tell me what could possible be going wrong. I am new to using GDAL.

pip uninstall gdal



pip install numpy



pip install GDAL==$(gdal-config --version) --global-option=build_ext --global-option="-I/usr/include/gdal"

I had the same problem and solved it by building gdal from scratch, after I had Python 2.7 with numpy installed.

I am using gdal within a conda virtual environment. I had the same error, and I was able to resolve it by uninstalling and re-installing some of gdal's key dependencies.

To determine its dependencies:
conda info gdal

More specifically, I had to conda uninstall the following:

• gdal


• numpy


• libgdal


• geos

Quick note on geos: it was not listed as a dependency upon querying with conda info. However, when attempting to reinstall gdal, I had found that there were conflicting libraries associated with geos, so I uninstalled it for thoroughness.

Then, a quick conda install gdal will re-install gdal and its dependencies. When you re-install gdal again with the above line, double-check that you are installing gdal version > 2.0

These specific commands will be different depending on your python distribution / package manager. But hopefully, following a similar procedure of uninstalling/reinstalling will enable you to get a working version.

I just solved this by placing the right files extracted from RPM.
Here is where I get my 64bit RPM
http://www.filewatcher.com/d/Mandriva/2010.1/x86_64/Sciences/Geosciences/gdal-python-1.7.2-1mdv2010.1.x86_64.rpm.220418.html

Using the rpm extraction command provided by
http://www.cyberciti.biz/tips/how-to-extract-an-rpm-package-without-installing-it.html

I was able to find the lost _gdal_array.* files in the path below
usr/lib64/python2.6/site-packages/GDAL-1.7.2-py2.6-linux-x86_64.egg/osgeo/

Then simply copy _gdal_array.* to python2.7/site-packages/osgeo/ and problem solved. Hope this helps anyone with similar problems.