ppgplot

[warren hankey]

Having trouble installing ppgplot. Needed for PhD astrophysical work.
Mepis 6.5, bash shell.

It seems to build and install fine but I get this error when I try to import to python,

>>> import ppgplot
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "/usr/lib/python2.4/site-packages/ppgplot/__init__.py", line 1, in ?
from _ppgplot import *
ImportError: /usr/lib/libpgplot.so.5: undefined symbol: XCheckWindowEve nt

Does this mean the install script didn't find the pgplot libraries?

In my /usr/lib directory, which environment variable PGPLOT_DIR points to, I have,
libpgplot.a libpgplot.so libpgplot.so.5 libpgplot.so.5. 2.2


When I did the build/install, I got the following,

root@2[ppgplot-1.3]# python setup.py install
using Numeric...
running install
running build
running build_py
running build_ext
running install_lib
creating /usr/lib/python2.4/site-packages/ppgplot
copying build/lib.linux-i686-2.4/ppgplot/_ppgplot.so -> /usr/lib/python2.4/site-packages/ppgplot
copying build/lib.linux-i686-2.4/ppgplot/__init__.py -> /usr/lib/python2.4/site-packages/ppgplot
byte-compiling /usr/lib/python2.4/site-packages/ppgplot/__init__.py to __init__.pyc

Thanks in advance for any contributions.

[woooee]

It is probably a missing dependency. The ppgplot website says that it depends on Numeric Python (now NumPy), so that has to be installed. Also, pgplot5 is available in the repositories for my Ubuntu install, so it should be available for any Debian derivative and would be the best way to install. Synaptic wants to install libg2c0 as a dependency as well, which I think is a fortran linker.

[warren hankey]

Thanks,
I believe I have all the dependencies satisfied.
I have Numeric package, libg2c0, and everything required in the INSTALL notes that came with the source.
As you can see, it doesn't complain when it gets built.
And you can see I have pgplot5 installed.

I've come here because I've checked the documentation and can't work out what I'm missing.

Upon import into python it complains about an undefined symbol in a library that exists on my file system, whatever that means.
Quote:
ImportError: /usr/lib/libpgplot.so.5: undefined symbol: XCheckWindowEve nt

I'm thinking it could be a problem with python path variables not pointing to the pgplot libraries or something?

It is probably a missing dependency. The ppgplot website says that it depends on Numeric Python (now NumPy), so that has to be installed. Also, pgplot5 is available in the repositories for my Ubuntu install, so it should be available for any Debian derivative and would be the best way to install. Synaptic wants to install libg2c0 as a dependency as well, which I think is a fortran linker.

[woooee]

It appears that XCheckWindowEve nt is part of the XLibs library. On Ubuntu I would have to install xlibs-dev. You probably have to do something similar on Mepis.

[warren hankey]

Thanks again!
You were right.

It turns out I thought I had the needed libraries, but I didn't!

I only just realised that I need the developer packages installed, with the header and development files, to be able to build and compile, not just the plain libraries.

This should resolve my problem.

Hey, I'm learning ........ the hard way.