[Numpy-discussion] Trying to read 500M txt file using numpy.genfromtxt within ipython shell

Chao YUE chaoyuejoy@gmail....
Tue Mar 20 07:33:56 CDT 2012

Dear all,

I received a file from others which contains ~30 million lines and in size
of ~500M.
I try read it with numpy.genfromtxt in ipython interactive mode. Then
ipython crashed.
The data contains lat,lon,var1,year, the year ranges from 1001 to 2006.
Finally I want to write the
data to netcdf for separate years and feed them into the model. I guess I
need a better way to do this?
anyone would be any idea is highly appreciated.


thanks and cheers,


Chao YUE
Laboratoire des Sciences du Climat et de l'Environnement (LSCE-IPSL)
Batiment 712 - Pe 119
91191 GIF Sur YVETTE Cedex
Tel: (33) 01 69 08 29 02; Fax:
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