PLOTA

PLOTA plots each new plot using other color.

Description

PLOTA is the same as standard PLOT function, BUT it plots each new plot using other color ( making 'hold on' automatically and cycling through the colors in the order specified by the current axes ColorOrder property )

  EXAMPLE:
  figure;
  plota(randn(1,100));
  plota(randn(1,100));
  plota(randn(1,100));
  legend('First call to plota', 'Second call to plota', 'Third call to plota')

• MATLAB release: MATLAB 6.5.1 (R13SP1)

[David Sekyere]

 

[Natanya Black]

Thank you - that was very helpful!!!

[Yonggun Jun]

This is what I was looking for!!

[Rob Campbell]

If your x axes have the same lengths then you don't need a new function. Just:
plot(randn(3,100)')
 
Also see:
http://blogs.mathworks.com/pick/2008/08/15/colors-for-your-multi-line-plots/

[IVAN]

This is perfect! I´m very grateful for this function

[Danilo Zanatta]

Thank you - very helpful tool !!!!

Just a comment: sine I often use handles to plots, I've change the function definition to:

function hp = plota(varargin)

[Danilo Zanatta]

Sorry, I made a mistake on my previous comment (is it possible to edit/delete it)... The function should be:

ca = get(get(0,'CurrentFigure'),'CurrentAxes');
if isempty( ca )
     ordi0 = 0;
else
     ordi0 = length(get(ca,'Children'));
     CurrentHold = get( gca, 'NextPlot');
     set( gca, 'NextPlot', 'add' );
end
hp = plot( varargin{:} );
ColOrd = get(gca, 'ColorOrder');
children = get(gca,'Children');
ordi = length(children);
ord = mod((ordi0+1:ordi)-1, size(ColOrd,1));
cc = 0;
for ii = (ordi - ordi0): -1 : 1
     cc = cc + 1;
     set(children(ii), 'Color', ColOrd(((ordi0+cc)<=size(ColOrd,1))*(ordi0+cc) + ((ordi0+cc)>size(ColOrd,1))*(ord(cc)+1), :));
end
if ordi0 == 0,
    set( gca, 'NextPlot', 'replace');
else
    set( gca, 'NextPlot', CurrentHold);
end