[Gnuplot-py-users] Using a list or tuple inside g.plot() gives errors

[Steven W. <wal...@pa...>]

I have a pretty simple script working right now, and I'm still  
relatively new to python so if I'm going at this in a stupid way,  
please let me know.

right now it has the following:

            a_mag = Gnuplot.Data(w, cols=(1,6), inline=1)
            a_mag.set_option(title='Amide Dipole')
            a_mag.set_option(with='lines')

            mags.append(a_mag)

             s_mag = Gnuplot.Data(w, cols=(1,10), inline=1)
             s_mag.set_option(title='Side Chain Dipole')
             s_mag.set_option(with='lines')

            mags.append(s_mag)

when I use the command:
             g.plot(a_mag, s_mag)

everything works fine. I would like however to add or remove certain  
plots from within the script, but alas the command:

             g.plot(mags)

or
             g.plot(tuple(mags))

does not work. I get the following error messages:

Traceback (most recent call last):
   File "./fasttest.py", line 215, in ?
     g.plot(mags)
   File "/usr/local/lib/python2.4/site-packages/Gnuplot/_Gnuplot.py",  
line 273, in plot
     self._add_to_queue(items)
   File "/usr/local/lib/python2.4/site-packages/Gnuplot/_Gnuplot.py",  
line 243, in _add_to_queue
     self.itemlist.append(PlotItems.Data(item))
   File "/usr/local/lib/python2.4/site-packages/Gnuplot/ 
PlotItems.py", line 513, in Data
     set = utils.float_array(set[0])
   File "/usr/local/lib/python2.4/site-packages/Gnuplot/utils.py",  
line 36, in float_array
     return Numeric.asarray(m, Numeric.Float32)
   File "/usr/local/lib/python2.4/site-packages/Numeric/Numeric.py",  
line 134, in asarray
     return multiarray.array(a, typecode, copy=0, savespace=savespace)
AttributeError: _InlineFileItem instance has no attribute '__float__'

Any suggestions?

Thanks for any help,

Steve