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Display Python Formatted Arrays

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Display Python Formatted Arrays

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12 May 2009 (Updated )

Displays a double array in Python/NumPy format

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Description

This class inherits from double and overloads the display function to output multidimensional arrays in text format that is compatible for copy and pasting into an interactive Python session.

It doesn't quite work with arbitrary dimensions, since I got stuck with generalised indexing, hence the hackish:
newx = squeeze(x(i,:,:,:,:,:,:,:,:,:,:));
(I'd be interested to hear if theres a different way to do this!)
So at the moment it supports about 12 dimensions, which I thought was probably enough for most copy + paste needs, but if you need more you can just add more colons to the line above - it doesn't seem to do any harm!

Anyway with the file in your Matlab path:
>> x = rand(2,3,4,5);
>> a = array(x)

You can specify a fprintf style format string either in the
constructor or after:
>> a = array(x,'%2.6f')
>> a.format = '%2.2f'

eg:
>> x = rand(4,3,2);
>> array(x)
ans =

array([[[2.071566461449581e-01, 3.501602151029837e-02],
       [1.589135260727248e-01, 3.766891927380323e-01],
       [8.757206127846399e-01, 7.259276565938600e-01]],

      [[7.570839415557700e-01, 3.974969411279816e-02],
       [8.109207856487061e-01, 5.043242527988604e-01],
       [6.351863794630047e-01, 7.013280585980169e-01]],

      [[8.863281096304466e-01, 9.885678912262633e-01],
       [4.765077527169480e-01, 7.634956792870943e-01],
       [9.728134909163066e-02, 4.588908258125032e-01]],

      [[4.722298594969571e-01, 6.861815984603373e-01],
       [1.162875322461844e-01, 4.887479677951201e-02],
       [9.084394562396312e-01, 5.822948089552498e-01]]])

MATLAB release MATLAB 7.7 (R2008b)
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Comments and Ratings (2)
09 Aug 2013 Shahab  
13 May 2009 Robin

If anyone is interested Python code for other direction (to format Python arrays for copy and pasting into an interactive MATLAB session is available here:
http://codepad.org/MVYCM0AJ

Robin

Updates
12 May 2009

More detailed description with an example.

03 Dec 2009

Update file - fix problem with column array

13 Mar 2010

another silly bug - missing off first element...

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