[Numpy-discussion] using numpy.savetxt to save columns of numerical values and columns of text values
Richared Beare
richard.beare@sci.monash.edu...
Thu Nov 26 23:30:07 CST 2009
I have been unable to find a way of doing a very simple thing: saving
data that contains both arrays of numerical values and arrays of string
values, using savetxt in numpy.
As a very simple example, suppose a is a numpy array of integers and b
is one containing strings, e.g.:
a = np.array([1,2,3])
b = np.array(['one', 'two', 'three'])
The following call to savetxt:
savetxt('test.txt', transpose((a,b)), fmt='%i %s')
produces the following error:
float argument required, not numpy.string_
I don't have any problems if I mix integers and floats in the format
string, or save all values as strings, but I am completely unable to
save formatted numerical values and strings in different columns using
savetxt.
There must be an easy solution!
Thank you.
Richard Beare
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