[Matplotlib-users] table data type and plot functions?

Hi,

I checked the manual and briefly searched the mailing list but did not
find this... Is there a table-like data type with rows as events and
columns as attributes that I can make plots with? This is called
"ntuple" in the high energy physics community.

Let me illustrate with an example. Assume that an event consists of 3
attributes (x, y, t). With N events we have a table of N x 3 data
items. Assume that the data items are read from a file "xyt.dat".

d = Table("xyt.dat")
d.plot("x", "t")    # make a plot of x vs. t, N points are drawn
d.plot("x")     # make a histogram plot of x, N entries in the histogram
d.plot("x", "y < 3")  # make a histogram plot of x where y is less than 3.
                # that is, only {x[i] | y[i] < 3} are used to make the histogram

If there is no existing modules for this I'll go ahead write one.  :)

cheers,
Ping