[scilab-Users] Help in reading txt file: how to skip the title

[Giri]

harishankar ramachandran wrote:

> The following program does the specific job:
>
> // to read in a data file containing header lines starting with
> // "*" and to read in the columns after the last header line.
> A=read("data.txt",-1,1,"(a)"); // read in the file
> jj=grep(A,"*"); // find lines containing "*"
>
> // We want to skip upto all lines containing "*" So start after
> // the last such line
> ibeg=jj(length(jj))+1;
> iend=size(A,"r");
> m=iend-ibeg+1;
> [n,v1,v2,v3]=msscanf(m,A(ibeg:iend),"%f %f %f");
>
> clf
> subplot(3,1,1);
> plot2d(1:m,v1');
> subplot(3,1,2);
> plot2d(1:m,v2');
> subplot(3,1,3);
> plot2d(1:m,v3');
>
> // Note that this script hardcoded the number of columns and does
> // no error checking. Since column information is present in the
> // file, one could also extract that info and construct the
> // format string appropriately. Or use the logic in fscanfMat to directly
> // figure out the number of columns.
>
> Not sure this is quite what you wanted.
>
> regards
>
> hari ramachandran
>
> On Wednesday 06 May 2009 21:49, Zhiming Qi wrote:
> > *****************************
> > * Subplot Definitions *
> > *****************************
> > 1
> > *****************************
> > * COLUMN LABELS *
> > *****************************
> > DAY
> > DEPTH (CM)
> > SOIL WATER CONTENT (VOL)
> > ****************** DATA STARTS HERE *****************
> > 274 1.000 0.2898
> > 274 2.000 0.2919
> > 274 4.000 0.2939
> > 274 7.000 0.2990
> > 274 10.00 0.3035
> > 274 13.00 0.3130
> > 274 16.00 0.3172
> > 274 20.00 0.3201
> > 274 24.00 0.3243
> > 274 27.00 0.3272
> > 274 30.00 0.3300
> > 274 33.00 0.3210
> > 274 36.00 0.3223
> > 274 40.00 0.3236
> > 274 44.00 0.3258
> > 274 48.00 0.3273
> > 274 53.00 0.3302
> > 274 57.00 0.3345
> > 274 60.00 0.3381
> > 274 63.00 0.3331
>
> --
> Dr. Hari Ramachandran, Professor, 332B ESB, EE Dept, IIT-Madras
> Interests: Nonlinear Optics, Nonlinear Waves, Plasma Physics, Particle
>            Simulations, Computational Algorithms, Linux.
> Off: 91-44-2257-4421                    Fax: 91-44-2257-0120
> Res: 91-44-2663-1863             Home Email: omkarbharathi at gmail.com

Dear Prof. Ramachandran:
Thanks for the detailed solution, this is a common problem faced
by anyone trying process data obtained from lab instruments. I was
also planning to post some similar question as I am new user of
Scilab. Thanks to Mr Qi also!
Sincerely,
Giridhar

--
M. S. Giridhar
Thinfilms and Microsensors Group
Laboratory for Electro Optic Systems
Indian Space Research Organisation
1st Cross, 1st Stage, Peenya Industrial Estate,
Bangalore 560058.
Phone:2839 2294, 2839 2291 ext 2212



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