[Numpy-discussion] Simple Loadtxt question

Derek Homeier derek@astro.physik.uni-goettingen...
Wed Nov 28 18:29:27 CST 2012


On 29.11.2012, at 1:21AM, Robert Love wrote:

> I have a file with thousands of lines like this:
> 
> Signal was returned in 204 microseconds
> Signal was returned in 184 microseconds
> Signal was returned in 199 microseconds
> Signal was returned in 4274 microseconds
> Signal was returned in 202 microseconds
> Signal was returned in 189 microseconds
> 
> I try to read it like this:
> 
> 
> data = np.loadtxt('dummy.data', dtype={'names':('label','times','musec'), 'fmts':('|S23','i8','|S13')})
> 
> It fails, I think, because it wants a string format and field for each of the words 'Signal' 'was' 'returned' etc.
> 
> Can I make it treat that whole string before the number as one string, one field?  All I really care about is the numbers anyway.
> 
Then how about 

np.loadtxt('dummy.data', usecols=(4, ))

Cheers,
					Derek



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