Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #99592 > unrolled thread

Re: read 4D binary data

Back to article view | Back to comp.lang.python

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  Re: read 4D binary data Laura Creighton <lac@openend.se> - 2015-11-26 19:00 +0100

#99592 — Re: read 4D binary data

In a message of Thu, 26 Nov 2015 15:15:43 -0200, jorge.conrado@cptec.inpe.br wr
ites:
>Hi,
>
>
>I'm startig in Python and I have a 4D binary data. The dimension of my 
>data is:
>
>67 ----> longitude points
>41 ----> latitude points
>10 ----> pressure levels points
>33 ----> time points
>
>
>How can I read this data and what can I do to get a 2D array 
>(longitude,latitude) for a specific pressure  and time dimension.
>
>
>Conrado

If your binary data is all of the same type -- these are all floats,
or all ints -- you can use the python array module to read it.
https://docs.python.org/3/library/array.html

If they are heterogenous then you cannot use array, but can use struct
https://docs.python.org/3.5/library/struct.html

If I were you, I would want to get my data into pandas, which is
the best tool for data analysis
http://pandas.pydata.org/

And I would do this pretty much exactly as 
Albert Jan outlines in this stackoverflow question.
http://stackoverflow.com/questions/16573089/reading-binary-data-into-pandas
though, as I said, if your data is homogeneous you can use the array
module instead of using the struct one.  But struct will work on
homogenous data as well -- it is just slower.  You may not care.

Note that Albert Jan's answer is the one on the bottom, i.e. not the
one that got the checkmark from the original poster.

Laura

[toc] | [standalone]

Back to top | Article view | comp.lang.python

csiph-web