[Qgis-developer] using gdal_arrays in QGIS 2.99

Idan Miara idan at miara.com
Wed Apr 5 00:59:07 PDT 2017


Hi,

Did anyone have this problem? Any solution?

On 30 Mar 2017 5:08 PM, "Idan Miara" <idan at miara.com> wrote:

Hello,

I am trying to read a raster using gdal's ReadAsArray() method in python
3.6. I am using the gdal library provided in Qgis' 2.99 weekly release
(QGIS-OSGeo4W-2.99.0-9-Setup-x86_64.exe).

this sample script:

import gdal
x = gdal.Open(r'D:/Map Samples/1/DTM/n29w098d5dtm.tif')  #valid tif
y = x.ReadAsArray()
print(y)


produces this error:

Traceback (most recent call last):
  File "C:\PROGRA~1\QGIS2~1.99\apps\Python36\lib\site-packages\osgeo\gdal_array.py",
line 16, in swig_import_helper
    fp, pathname, description = imp.find_module('_gdal_array',
[dirname(__file__)])
  File "C:\PROGRA~1\QGIS2~1.99\apps\Python36\lib\imp.py", line 296, in
find_module
    raise ImportError(_ERR_MSG.format(name), name=name)
ImportError: No module named '_gdal_array'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\PROGRA~1\QGIS2~1.99\apps\Python36\lib\code.py", line 91, in
runcode
    exec(code, self.locals)
  File "<input>", line 1, in <module>
  File "<string>", line 3, in <module>
  File "C:\PROGRA~1\QGIS2~1.99\apps\Python36\lib\site-packages\osgeo\gdal.py",
line 1817, in ReadAsArray
    from . import gdalnumeric
  File "C:/PROGRA~1/QGIS2~1.99/apps/qgis-dev/./python\qgis\utils.py", line
647, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "C:\PROGRA~1\QGIS2~1.99\apps\Python36\lib\site-packages\osgeo\gdalnumeric.py",
line 1, in <module>
    from osgeo.gdal_array import *
  File "C:/PROGRA~1/QGIS2~1.99/apps/qgis-dev/./python\qgis\utils.py", line
647, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "C:\PROGRA~1\QGIS2~1.99\apps\Python36\lib\site-packages\osgeo\gdal_array.py",
line 26, in <module>
    _gdal_array = swig_import_helper()
  File "C:\PROGRA~1\QGIS2~1.99\apps\Python36\lib\site-packages\osgeo\gdal_array.py",
line 18, in swig_import_helper
    import _gdal_array
  File "C:/PROGRA~1/QGIS2~1.99/apps/qgis-dev/./python\qgis\utils.py", line
647, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
ModuleNotFoundError: No module named '_gdal_array'


What can i do to use gdal's readAsArray method in my code?
Thank you.
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