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Plotting from a file

• To: mathgroup at smc.vnet.net
• Subject: [mg33108] Plotting from a file
• From: "SuneF" <noluck at nowhere.dk>
• Date: Sun, 3 Mar 2002 06:30:32 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

Hi

I have this output file of floating point data from a C program.
It is all printed in 1.435664334e-013 notation, 7 columns in total.

When I import with:
data=Import["datafile.dat","Table"]
it doesn't understand the exponential notation.
It's printing the whole file (huge file by the way) below the command and
only a handfull of the floats seem to be understood correctly as 1.333^10-13.
If I print the numbers as 0.00000001234 then mathematica understands, 
but this is not ideal, obviously.

Also, later when it works I need to plot the columns, something like
Plot[data(2,*)]
you know, plot the second column.
The code doesn't work, mathematica doesn't take arrays like that, not sure why.

I'm very confused about why mathematica have both lists, arrays and matrices, 
I don't know what to work with in this case. 

Is it possible to declare a datatype like in C++ ?
I like to know what I'm working with, call it force of habbit ;)

Thanks,
Sune.

• Follow-Ups:
  • Re: Plotting from a file
    • From: Timothy Stiles <tastiles@students.wisc.edu>