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MathGroup Archive 2007

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Re: comments in import files

  • To: mathgroup at smc.vnet.net
  • Subject: [mg74640] Re: comments in import files
  • From: Bill Rowe <readnewsciv at sbcglobal.net>
  • Date: Thu, 29 Mar 2007 02:33:39 -0500 (EST)

On 3/28/07 at 4:36 AM, beheiger at hotmail.com (beheiger) wrote:

>I would like to know if Mathematica can handle comments in import
>files. In particular, I would like to add lines of comments to an
><emptyspace>-separated ASCII table (say, "results.dat") that I
>produced with other programs. However, I can't seem to find anything
>on how to write these comments in such a way that Mathematica's
>function, used as

>Import["results.dat","Table"];

My approach for dealing with this issue is to format the data in
a fashion consistent with using the Mathematica Get function.

Specifically, I save data from other apps as comma separated
values and surround each line with {} characters terminating
lines with a ,. Then adding a { at the beginning and a } at the
end allows the entire file to be read into a Mathematica
variable using Get.

With this structure, it is a simple matter to add comments any
where in the file separating them with (* and *). Mathematica
will ignore these when the file is read using Get.

This structure allows me to easily look at the data files with a
text editor to see what they contain.

In addition, I've created a couple of functions to use within
Mathematica that allow me to read just the comments or append
comments to any text file. If there is interest, I will post
those here.
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