Some Scilab functions I find useful

readme.md

Content

• new_graphic_window() - Checks other existing graphic windows. If so it creates a new graphic window without erasing previous ones.
• fact(k) - Takes an integer as argument. Returns k!.
• sumfunction(StartIndex, EndIndex, Fct)- StartIndex and EndIndex are signed integers and Fct is a function (defined with deff() for instance). Let k be an integer then the function sumfunction returns the sum of Fct(k) for k = StartIndex, ..., EndIndex.

Usage

1. Download the useful-functions.sci file and move it into your project's directory.
2. Copy and paste the line exec useful-functions.sci at the beginning of your file (after clear; if you use it).
3. Call any function you need.

useful-functions.sci

function new_graphic_window()
  AllCurrentFiguresId = get('figures_id');
  
  if isempty(AllCurrentFiguresId) then
    NewFigureId = 0;
  else
    CurrentFigure = get('current_figure');
    CurrentFigureId = CurrentFigure.figure_id;
    NewFigureId = CurrentFigureId+1;
  end
  
  scf(NewFigureId);
  clf(NewFigureId);
endfunction

function f = fact(k)
  if k==1 then
    f=1
  else
      f=k*fact(k-1);
  end
endfunction

function S = sumfunction(StartIndex, EndIndex, Fct)
  S = sum(feval((StartIndex:EndIndex),Fct));
endfunction