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Hi,
<div><span class="Apple-tab-span" style="white-space:pre"></span>I am trying to harvest the information from a large number of FITS headers, parse them and do statistics on values, in an efficient manner. I read in each header in the usual fashion: </div>
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h = fits.open('lbiy83i0q_x1d.fits’)</div>
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<div style="margin: 0px;">h0 = h[0].header</div>
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<div>My goal then is to get all the header info into an astropy Table such that the table columns are given by the header keys and the values in the rows are given by the values in each of 100+ headers. I tried this: </div>
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<span style="color: #5330e1">In [38]: </span>t = Table(rows=h0.values(), names=h0.keys())</div>
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<span style="color: #c33720">TypeError</span> Traceback (most recent call last)</div>
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<ipython-input-38-8a0ece2925d5><span style="color: #f5f5f5"> in </span><span style="color: #34bbc7"><module></span><span style="color: #5330e1">()</span></div>
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<span style="color: #34bd26">----> 1</span><span style="color: #c33720"> </span>t
<span style="color: #5330e1">=</span> Table<span style="color: #5330e1">(</span>rows<span style="color: #5330e1">=</span>h0<span style="color: #5330e1">.</span>values<span style="color: #5330e1">(),</span> names<span style="color: #5330e1">=</span>h0<span style="color: #5330e1">.</span>keys<span style="color: #5330e1">())</span></div>
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/Users/tumlinson/Ureka/python/lib/python2.7/site-packages/astropy/table/table.pyc<span style="color: #f5f5f5"> in
</span><span style="color: #34bbc7">__init__</span><span style="color: #5330e1">(self, data, masked, names, dtype, meta, copy, rows)</span></div>
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<span style="color: #34bd26"> 240</span> data <span style="color: #5330e1">
=</span> rows</div>
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<span style="color: #34bd26"> 241</span> <span style="color: #34bd26">
else</span><span style="color: #5330e1">:</span></div>
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<span style="color: #34bd26">--> 242</span><span style="color: #c33720">
</span>rec_data <span style="color: #5330e1">=</span> recarray_fromrecords<span style="color: #5330e1">(</span>rows<span style="color: #5330e1">)</span></div>
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<span style="color: #34bd26"> 243</span> data <span style="color: #5330e1">
=</span> <span style="color: #5330e1">[</span>rec_data<span style="color: #5330e1">[</span>name<span style="color: #5330e1">]</span>
<span style="color: #34bd26">for</span> name <span style="color: #34bd26">in</span> rec_data<span style="color: #5330e1">.</span>dtype<span style="color: #5330e1">.</span>names<span style="color: #5330e1">]</span></div>
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244<span style="color: #f5f5f5"> </span></div>
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/Users/tumlinson/Ureka/python/lib/python2.7/site-packages/astropy/table/np_utils.pyc<span style="color: #f5f5f5"> in
</span><span style="color: #34bbc7">recarray_fromrecords</span><span style="color: #5330e1">(rec_list)</span></div>
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<span style="color: #34bd26"> 604</span><span style="color: #f5f5f5"> </span>
# to column arrays in the recarray module; it could be there is a better</div>
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605<span style="color: #f5f5f5"> </span><span style="color: #c33720"># way</span></div>
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<span style="color: #34bd26">--> 606</span><span style="color: #c33720"> </span>
nfields <span style="color: #5330e1">=</span> len<span style="color: #5330e1">(</span>rec_list<span style="color: #5330e1">[</span><span style="color: #34bbc7">0</span><span style="color: #5330e1">])</span></div>
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<span style="color: #34bd26"> 607</span> obj <span style="color: #5330e1">
=</span> np<span style="color: #5330e1">.</span>array<span style="color: #5330e1">(</span>rec_list<span style="color: #5330e1">,</span> dtype<span style="color: #5330e1">=</span>object<span style="color: #5330e1">)</span></div>
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<span style="color: #34bd26"> 608</span> array_list <span style="color: #5330e1">
=</span> <span style="color: #5330e1">[</span>np<span style="color: #5330e1">.</span>array<span style="color: #5330e1">(</span>obj<span style="color: #5330e1">[...,</span> i<span style="color: #5330e1">].</span>tolist<span style="color: #5330e1">())</span>
<span style="color: #34bd26">for</span> i <span style="color: #34bd26">in</span> range<span style="color: #5330e1">(</span>nfields<span style="color: #5330e1">)]</span></div>
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<span style="color: #c33720">TypeError</span>: object of type 'bool' has no len()</div>
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<div>to no avail. Is this possible, easy, or wrongheaded? Advise appreciated. </div>
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<div>Thanks, </div>
<div>JT</div>
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