Re: [Matplotlib-users] direct plot fromfile?

[manouchk <man...@gm...>]

Le Mercredi 05 Avril 2006 11:36, manouchk a =E9crit=A0:
I made a mistake with my mail. Just correcting it, sorry for inconvenience.

Hi,

Data file I use usually have a first line or more with comments and sometim=
es=20
column with text. I used to use gnuplot that now automatically skips rows t=
hat=20
does not contain numbers (before one should use every n to skip n forst lin=
e)=20
and handle well files that have column without number.
using column 3 and 4 from a file to plot is done using using 3:3.
I wondering if there is an hidden possibilty to plot more or less directly=
=20
from file as in gnuplot.

imagine the file :
col1 col2 col3 col4 col5 col6
T3-4B 450 100 4.31 1.44 0
T3-4B 450 200 5.56 2.06 0
T3-4B 450 500 6.03 2.09 0
T3-4A 450 5000 9.71 2.16 0

that would be a function that plots column number 3 and 4 skipping first li=
ne=20
and ignoring first column (that would put zeros in the array for example)
A fonction that would do that could look like that one:
plotfromfile(file=3D"data",using=3D(3,4),skippingline=3D1,ignorecolumn=3D[1=
])

is there a function in pylab I missed and that already does something=20
similar?