[SciPy-User] dtype of LabView binary files

Robert Kern robert.kern@gmail....
Tue Nov 9 16:40:34 CST 2010


On Tue, Nov 9, 2010 at 16:34, Xunchen Liu <xunchen.liu@gmail.com> wrote:
>
> Hello,
> It seems there is only one web page here talking about the dtype of the
> binary file saved from Labview:
> http://www.shocksolution.com/2008/06/25/reading-labview-binary-files-with-python/
> I followed Travis' suggestion on that page to convert one of my Labview
> binary file using
> data=numpy.fromfile('name',dtype='>d')
> but this gives a array doubled the shape of my recorded data and also the
> value of the data are not right.
> For example, the attached is the text file and binary file saved by Labview.
> the text file reads:
> array([-2332., -2420., -2460., ...,  1660.,  1788.,  1804.])
> while the binary file reads (with dtype='>d')
> array([-3.30078125,  0.        , -3.30297852, ...,  0. ,       -2.6953125 ,
>  0.        ])
> Anyone knows what dtype I should use, or how should I build the correct
> dtype for it?

Can you provide your code and an example file?

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless
enigma that is made terrible by our own mad attempt to interpret it as
though it had an underlying truth."
  -- Umberto Eco


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