Re: comments in import files
- To: mathgroup at smc.vnet.net
- Subject: [mg74648] Re: comments in import files
- From: "Szabolcs" <szhorvat at gmail.com>
- Date: Thu, 29 Mar 2007 02:37:45 -0500 (EST)
- References: <firstname.lastname@example.org>
On Mar 28, 11:39 am, "beheiger" <beheiger at hotmail.com> wrote: > Hi, > > 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"]; > > does not complain. Help is appreciated. > > Regards, Andy If nobody else posts a better solution (I hope that someone will), you can use the grep program to strip out the comments, e.g. readTable[filename_] := (Run["grep", "-v", "^#", filename, ">", "c:\ \temp\\tmpfile"]; Import["tmpfile", "Table"]) (This will remove lines starting with #.) Of course you can also use Mathematica to read the file line by line and strip out the comments, but it may be slow with large datasets.