[Gdal-dev] issues merging 7 bands of Landsat scene into 1 image

[Mateusz Loskot]

Maciej Sieczka wrote:
> Mateusz Loskot wrote:
>> Maciej Sieczka wrote:
>>> Mateusz Loskot wrote:
>>>> Maciej Sieczka wrote:
>>>>> GDAL --without-python --with-ngpython (full config syntax and
>>>>>  other details below) configures and builds without errors, 
>>>>> but after the make install, no python scripts get installed, 
>>>>> including gdal_merge.py. How do I build GDAL --with-ngpython 
>>>>> and install it properly?
>>>>> 
>>>>> I have python2.4-numeric 24.2 and python2.4-numarray 1.5.1 
>>>>> installed into /usr. site-packages dir is 
>>>>> /usr/lib/python2.4/site-packages/
>>>>> 
>>>>> Note: there is a warning in config.log: "checking for NumPy 
>>>>> include files... missing"; does that matter?
>>>> Maciej,
>>>> 
>>>> Yes, it does. You need to install dev package for NumPy 
>>>> package.
>>> I don't have such available. Never heard of...
>> I have installed python-numpy-dev
> 
> What distro are you using? I don't have any package with 'numpy' in 
> it's name, available.


Maciej,

I use Ubuntu 6.10 (Edgy Eft)
Here is the package:
http://packages.ubuntu.com/edgy/python/python-numpy-dev

>> Note, that currently none of python utils from gdal/pymod are 
>> installed, so you won't see gdal_merge.py in the $PREFIX/bin 
>> directory. You need to manually copy all tools you need, from 
>> gdal/pymod to $PREFIX/bin.
> 
> This I would never guess. I thought they would be installed just as 
> in case of the old --with-python. And since they were not installed, 
> I assumed they were not built. But look, they are all there in my 
> source GDAL directory: [...]

These runnable utilities like gdal_merge.py are not installed
because the NG Python support is not finally finished, there are some
tasks left.
One of them is to add installation of these tools to building system
configuration.


> -rw-r--r-- 1 shoofi ubunciu  10285 2007-03-17 22:38 gdalnumeric.py 
> -rw-r--r-- 1 shoofi ubunciu  38712 2007-03-17 22:38 gdal.py 
> -rw-r--r-- 1 shoofi ubunciu  41453 2007-03-17 22:38 ogr.py -rw-r--r--
>  1 shoofi ubunciu  25472 2007-03-17 22:38 osr.py

Note, that not all *.py scripts in gdal/pymod directory are end-user
tools. These listed above are old Traditional Python modules.
In your case, you need to copy tools only, scripts listed here:
http://www.gdal.org/gdal_utilities.html

> Summarising:
> 
> 1. I don't need any "numpy-dev" package; apparently python2.4-numeric
>  or python2.4-numarray provide all the headers needed (dont't know 
> which one exactly).

NumPy is a next generation of numeric/numarray packages.

> 2. The warning in config.log: "checking for NumPy include files... 
> missing" is bogus and does not affect building --with-ngpython at 
> all. However confusing it is.

Yes, that's interesting.
Obviously, it needs to be checked.

> 3. I don't understand why the python scripts from /pymod directory 
> are not installed when using --with-ngpython, while they are 
> installed when I build with the old-fashioned --with-python. 
> Confusing as well.

The gdal/pymod includes two types of scripts:
1. Old Traditional Python bindings
2. GDAL utilities, like those listed here:
http://www.gdal.org/gdal_utilities.html)

Now, if you build NG Python - Next Generation Python bindings,
you do not need anything from gdal/pymod that applies to point 1.
(so to not copy anything  like gdal.py, ogr.py, osr.py,...)
You only need to manually copy end-user tools (point 2.)

And you are right, these tools should be installed from make install,
but they are not, because lack of configuration - this subject is under
construction, so you need to manually install it (copy).

I hope it explains the current situation.
If you'll have any question, don't hesitate to ask here.

Cheers
-- 
Mateusz Loskot
http://mateusz.loskot.net