[visionegg] Re: mu.arange TypeError

After further investigation, I think the error is caused by a custom
Cextension, as I am unable to reproduce this with that
extension disabled.

Paul, on 2009-05-25 11:42,  wrote:
> Hi,
> 
>     I'm getting a strange mu.arange TypeError when running a script, but
>     not when I turn on pdb in ipython and try to re-execute the same line that
>     throws the error.
> 
>     As you can see from the stack trace, I'm using VisionEgg-1.1.2
>     (though I also had to apply the patch from changest 1533 for
>      PyOpenGL3) 
>     
>     [ I've actually also just tried it using SVN head and
>     get the same stack trace ]
> 
>     numpy.__version__ is 1.2.1
> 
> /home/pi/code/Dimstim/Bars.pyc in bars(preexpSec, postexpSec, orioff, ori, 
> speedDegSec, xposDeg, yposDeg, widthDeg, heightDeg, brightness, antialiase, 
> bgbrightness, sweeptimeSec, postsweepSec, varlist, nruns, shuffleRuns, 
> blankSweep, shuffleBlankSweeps)
>     187         # Init vars for main loop
>     188         nvsyncsdisplayed = 0 # 1 based, init as 0
> --> 189         vsynctimer = VsyncTimer()
>     190         for var in sweeptable: # init local copies of vars in 
> sweeptable to their vals at first sweep in sweeplist
>     191                 exec(var + '= sweeptable[\'' + var + 
> '\'][sweeplist[0]]') # ie set var = sweeptable[var][sweeplist[0]], e.g. 
> ori=sweeptable['ori'][sweeplist[0]]
> 
> /usr/local/lib/python2.6/dist-packages/visionegg-1.1.2-py2.6-linux-i686.egg/VisionEgg/Core.py
>  in __init__(self, bin_start_msec, bin_stop_msec, bin_width_msec, 
> running_average_num_frames, save_all_frametimes)
>    1519     def __init__(self, bin_start_msec=2, bin_stop_msec=28, 
> bin_width_msec=2, running_average_num_frames=0,save_all_frametimes=False):
>    1520         """Create instance of FrameTimer."""
> -> 1521         self.bins = Numeric.arange( bin_start_msec, bin_stop_msec, 
> bin_width_msec )
>    1522         self.bin_width_msec = float(bin_width_msec)
>    1523         self.timing_histogram = Numeric.zeros( self.bins.shape, 
> Numeric.Float ) # make float to avoid (early) overflow errors
> 
> /usr/lib/python2.6/dist-packages/numpy/oldnumeric/functions.pyc in 
> arange(start, stop, step, typecode, dtype)
>      99 def arange(start, stop=None, step=1, typecode=None, dtype=None):
>     100     dtype = convtypecode2(typecode, dtype)
> --> 101     return mu.arange(start, stop, step, dtype)
>     102 
>     103 def fromstring(string, typecode='l', count=-1, dtype=None):
> 
> TypeError: function takes exactly 2 arguments (1 given)
> WARNING: Failure executing file: <bars.py>
> 
> In [2]: debug
> > /usr/lib/python2.6/dist-packages/numpy/oldnumeric/functions.py(101)arange()
>     100     dtype = convtypecode2(typecode, dtype)
> --> 101     return mu.arange(start, stop, step, dtype)
>     102 
> 
> ipdb> mu.arange(start, stop, step, dtype)
> array([ 2,  4,  6,  8, 10, 12, 14, 16, 18, 20, 22, 24, 26])
> 
> 
>     I appreciate the help,
>     Paul 
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