On 11/30/06, Charles R Harris <[EMAIL PROTECTED]> wrote:
On 11/30/06, Keith Goodman <[EMAIL PROTECTED]> wrote:
>
> What's a good way to save matrix objects to file for later use? I just
> need something quick for debugging.
>
> I saw two suggestions on this list from Francesc Altet (2006-05-22):
>
> 1. Use tofile and fromfile and save the meta data yourself.
>
> 2. pytables
>
> Any suggestions for #3?
Is this what you want?
In [14]: a
Out[14]:
matrix([[2, 3],
[4, 5]])
In [15]: b
Out[15]:
matrix([[2, 3],
[4, 5]])
In [16]: f = open(' dump.pkl','w')
In [17]: pickle.dump(a,f)
In [18]: pickle.dump(b,f)
In [19]: f.close()
In [20]: f = open('dump.pkl','r')
In [21]: x = pickle.load(f)
In [22]: y = pickle.load(f)
In [23]: f.close()
In [24]: x
Out[24]:
matrix([[2, 3],
[4, 5]])
In [25]: y
Out[25]:
matrix([[2, 3],
[4, 5]])
It is also possible to put the variables of interest in a dictionary, then
pickle the dictionary. That way you can also store the variable names.
In [27]: f = open('dump.pkl','w')
In [28]: pickle.dump( {'a':a,'b':b}, f)
In [29]: f.close()
In [30]: f = open('dump.pkl','r')
In [31]: mystuff = pickle.load(f)
In [32]: f.close()
In [34]: mystuff
Out[34]:
{'a': matrix([[2, 3],
[4, 5]]), 'b': matrix([[2, 3],
[4, 5]])}
I think you can actually pickle the whole evironment, but I don't recall
how.
Chuck
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