.peek() function for LYRALightCurve object not working #871

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1. wafels commented on Feb 27, 2014

   

   wafels

   on Feb 27, 2014

   Member

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   This seems to be a pandas issue:

   https://groups.google.com/forum/#!topic/pydata/ksIPthf2NJI
   http://pandas.pydata.org/pandas-docs/dev/faq.html?highlight=endian#byte-ordering-issues

   jack

   On Thu, Feb 27, 2014 at 11:06 AM, DanRyanIrish [email protected]:

   Hi guys,
   I've started using sunpy to do some LYRA analysis and I've noticed that
   the .peek() function for the LYRA object doesn't appear to work. Is this a
   known problem or have misunderstood something in the installation process
   etc.? The error I get is

   lc = sunpy.lightcurve.LYRALightCurve.create(file)
   lc.peek()

   ValueError Traceback (most recent call last)
   in ()
   ----> 1 lc.peek()

   /Users/danielr/anaconda/lib/python2.7/site-packages/sunpy/lightcurve/sources/lyra.pyc
   in peek(self, names, *_kwargs)
   57 axes = plt.gca()
   58
   ---> 59 axes = self.data.plot(ax=axes, subplots=True, sharex=True,
   *_kwargs)
   60 #plt.legend(loc='best')
   61

   /Users/danielr/anaconda/lib/python2.7/site-packages/pandas/tools/plotting.pyc
   in plot_frame(frame, x, y, subplots, sharex, sharey, use_index, figsize,
   grid, legend, rot, ax, style, title, xlim, ylim, logx, logy, xticks,
   yticks, kind, sort_columns, fontsize, secondary_y, *_kwds)
   1733 secondary_y=secondary_y, *_kwds)
   1734
   -> 1735 plot_obj.generate()
   1736 plot_obj.draw()
   1737 if subplots:

   /Users/danielr/anaconda/lib/python2.7/site-packages/pandas/tools/plotting.pyc
   in generate(self)
   903 self._compute_plot_data()
   904 self._setup_subplots()
   --> 905 self._make_plot()
   906 self._post_plot_logic()
   907 self._adorn_subplots()

   /Users/danielr/anaconda/lib/python2.7/site-packages/pandas/tools/plotting.pyc
   in _make_plot(self)
   1319 lines = []
   1320 labels = []
   -> 1321 x = self._get_xticks(convert_period=True)
   1322
   1323 plotf = self._get_plot_function()

   /Users/danielr/anaconda/lib/python2.7/site-packages/pandas/tools/plotting.pyc
   in _get_xticks(self, convert_period)
   1067 x = index._mpl_repr()
   1068 elif is_datetype:
   -> 1069 self.data = self.data.sort_index()
   1070 x = self.data.index._mpl_repr()
   1071 else:

   /Users/danielr/anaconda/lib/python2.7/site-packages/pandas/core/frame.pyc
   in sort_index(self, axis, by, ascending, inplace, kind)
   2626 self._update_inplace(new_data)
   2627 else:
   -> 2628 return self.take(indexer, axis=axis, convert=False, is_copy=False)
   2629
   2630 def sortlevel(self, level=0, axis=0, ascending=True, inplace=False):

   /Users/danielr/anaconda/lib/python2.7/site-packages/pandas/core/generic.pyc
   in take(self, indices, axis, convert, is_copy)
   1173 axis=baxis)
   1174 else:
   -> 1175 new_data = self.

   data.take(indices, axis=baxis) 1176 1177 result = self.
   constructor(new_data).finalize(self)

   /Users/danielr/anaconda/lib/python2.7/site-packages/pandas/core/internals.pyc
   in take(self, indexer, new_index, axis, verify)
   3421 ref_items=new_axes[0],
   3422 new_axis=new_axes[axis],
   -> 3423 axis=axis)
   3424
   3425 def merge(self, other, lsuffix=None, rsuffix=None):

   /Users/danielr/anaconda/lib/python2.7/site-packages/pandas/core/internals.pyc
   in apply(self, f, _args, *_kwargs)
   2373
   2374 else:
   -> 2375 applied = getattr(blk, f)(_args, *_kwargs)
   2376
   2377 if isinstance(applied, list):

   /Users/danielr/anaconda/lib/python2.7/site-packages/pandas/core/internals.pyc
   in take(self, indexer, ref_items, new_axis, axis)
   890 raise AssertionError('axis must be at least 1, got %d' % axis)
   891 new_values = com.take_nd(self.values, indexer, axis=axis,
   --> 892 allow_fill=False)
   893
   894 # need to preserve the ref_locs and just shift them

   /Users/danielr/anaconda/lib/python2.7/site-packages/pandas/core/common.pyc
   in take_nd(arr, indexer, axis, out, fill_value, mask_info, allow_fill)
   675 func = _get_take_nd_function(arr.ndim, arr.dtype, out.dtype,
   676 axis=axis, mask_info=mask_info)
   --> 677 func(arr, indexer, out, fill_value)
   678 return out
   679

   /Users/danielr/anaconda/lib/python2.7/site-packages/pandas/algos.so in
   pandas.algos.take_2d_axis1_float64_float64 (pandas/algos.c:80824)()

   ValueError: Big-endian buffer not supported on little-endian compiler

   Many thanks
   Dan Ryan

   Reply to this email directly or view it on GitHubhttps://github.com//issues/871
   .
2. Cadair commented on Feb 27, 2014

   

   Cadair

   on Feb 27, 2014

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   Oh holy cow! I had this issue the other day I thought it was something I was doing not an actual bona fide bug.

   Thanks a lot for reporting it Dan, I will patch it tomorrow.

   P.S. Seriously LYRA, little endian data?
3. Cadair

   self-assigned this

   on Feb 27, 2014
4. Cadair

   added

   0.4.x

   on Feb 27, 2014
5. aringlis commented on Apr 10, 2014

   

   aringlis

   on Apr 10, 2014

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   This seems to be specifically an issue with pandas 0.13. I reproduce the error with 0.13 but the peek method works normally on pandas 0.12.
6. aringlis commented on Apr 30, 2014

   

   aringlis

   on Apr 30, 2014

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   I think this issue has been resolved now.
7. Cadair

   closed this as completedon Apr 30, 2014
8. DanRyanIrish commented on May 5, 2014

   

   DanRyanIrish

   on May 5, 2014

   MemberAuthor

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   Cheers!

   On 30 Apr 2014, at 16:09, Stuart Mumford [email protected] wrote:

   Closed #871.

   —
   Reply to this email directly or view it on GitHub.
9. nabobalis

   unassigned

   Cadair

   on Sep 29, 2020