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POsetting an array element with a sequence error
 

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  1. POsetting an array element with a sequence error
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    <p><strong>2nd Edit</strong></p> <p>This is how a "stokes_line" is generated:</p> <pre><code>os.system('pdv -t %s &gt; temp.txt ' % epoch_name) stokes_line = np.genfromtxt('temp.txt', usecols=3, dtype=[('stokesI','float')], skip_header=1) os.system('vap -nc "mjd" %s &gt;&gt; mjd.txt' % new_y[i]) stokes_list[b] = stokes_line </code></pre> <p>"pdv" is a command from another programme which generated some numbers used in the "stokes_line".</p> <p>stokes_list just gets a new stokes_line added too each in a loop each time.</p> <p><strong>EDIT:</strong></p> <p>A stokes_line is created with a numpy.genfromtxt command (and so extracts from a txt file) and is made up of floats and they look like this:</p> <blockquote> <p>[(0.00126596,) (0.000621272,) (0.00058694,) ..., (0.0015368,) (0.000926448,) (7.95851e-05,)]</p> </blockquote> <p>A bunch of them together make up a stokes_list, and each stokes_line is made up of the same number of floats.</p> <p>Is the problem because the genfromtxt is not creating a list which would be all square brackets, but something else (is it called a sequence)??</p> <hr> <p>I wrote a python code which worked find on my laptop (python version 2.7.3), but it doesn't seem to run on my university desktop (python version 2.5.2).</p> <p>I don't think that showing lots of the code here will be useful, but the error message is on the second of these two lines:</p> <pre><code>os.system('vap -nc "mjd" %s &gt;&gt; mjd.txt' % new_y[i]) stokes_list[b] = stokes_line </code></pre> <p>Where "vap" is a command from another programme which returns some values. Anyway, the crux of the matter is that I get the following error message ONLY when I run on the older version of Python:</p> <blockquote> <p>ValueError: setting an array element with a sequence.</p> </blockquote> <p>Now I did a little research, and people say that the problem is due to incompatible lengths of lists of some such - but if that was the case, why does it work fine when I run it on my newer version of Python.</p> <p>Any help would be great, thank you!</p>
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    1. USuser1551817
    1. USuser1551817
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    1. COYou will need to show code that explains what `stokes_list` and `stokes_line` are.
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      1. USBrenBarn
    2. COoh okay I clicked the link now. Sorry. I'll go through my old questions and accept some answers.
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      1. USuser1551817
    3. COHow it _looks like_ doesn't describe what it is. Post some more code; specifically where you are generating `stokes_line` and `stokes_list`.
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      1. USBurhan Khalid
 

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