Export data from Scilab for PSTricks plots

Panagiotis — Sun, 25 Jan 2015 13:36:28 +0000

It is possible to load data from a file for plots with PSTricks in TeX. According to the PSTricks manual all that is needed is a file with a list of coordinate pairs delimited by curly braces , parentheses, commas.
One easy solution is to use the write command from scilab. Define the following function:


function pstrickswrite2d(filename,data_matrix)
//Author: Panagiotis Chatzichrisafis
//Date: 25.01.2015
//Description: 
//The function pstrickswrite2d(filename,data_matrix) has two inputs: 
//: The path and the filename which shall be used to write 
//            formated output for PSTricks 
//: The matrix containing the data to be written into the file provided by
//                argument.
//The output written to the  file has a format which is suitable for 
//the TeX PSTricks package fileplot or dataplot commands.  
    _num_decimal_places_=5; 
    file_desc=file('open',filename,'unknown','formatted');
    _max_num_ = max(abs(data_matrix));
    _num_integer_digits_ = ceil(log10(_max_num_)); 
    _num_format_(1) ='F';
    // add number of integer digits and decimal digits plus 2 for sign information
    _num_format_(2) = string(_num_integer_digits_+_num_decimal_places_+2); 
    _num_format_(3) ='.'; 
    _num_format_(4) = string(_num_decimal_places_);
    _num_format_ =strcat(_num_format_);
    _format_(1)   ='( ''{'' '   ;
    _format_(2)   = _num_format_; 
    _format_(3)   = ', '','' '  ;
    _format_(4)   = _num_format_; 
    _format_(5)   = ' ''}'' )'  ;
    _format_=strcat(_format_);
    write(file_desc,data_matrix,_format_); 
    file('close',file_desc);
endfunction

and load it into the scilab workspace.

Scilab Startup Configuration on MacOsX

Panagiotis — Sat, 05 May 2012 14:20:52 +0000

Sometimes it is useful to have several scripts (with standard definitions) loaded immediately into scilab.
On MacOsX Scilab executes at startup the first lines of the file .scilab. The file has to be placed (if it does already exist) under the directory:


/home/User" />/.Scilab/scilab-version" />

If the file isn’t there just create one and call your scripts with the definitions to be loaded into the scilab workspace.

For example you might want to load definitions of physical constants into the workspace that are defined within ‘physical_constants.sce’. For this purpose add a line like the following into the .scilab file:

exec('Users/User" />/Development/scilab/Base/physical_constants.sce');

Lysario - by Panagiotis Chatzichrisafis » Scilab

Export data from Scilab for PSTricks plots

Scilab Startup Configuration on MacOsX