color in quiver
in [Matlab]
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From: us on 11 Jan 2010 13:43 "Lisette de Boer" <lisettede_boer(a)hotmail.com> wrote in message <hif8td$5vf$1(a)fred.mathworks.com>... > > > well, this works - and should do what you need... > > did you copy/paste the snippet(?)... > > did it yield an output(?)... > > if(f) so: what does not work for you(?)... > > > > us > > Hi, > > I did something wrong but now it works. One more question; how do I do this if i want more than 2 colors, so i want to make the distinction between L<0, 0<L<0.5 and 0.5<L<1? > > thanks again! one of the solutions cn=3; % <- #conditions cmap=jet(cn); % <- select your own colors... tftmpl=false(size(L)); % <- create an all-false template... for i=1:cn tf=tftmpl; % <- start with a clean tf... if i==1 tf(L<0)=true; elseif i==2 tf(L>=0 & L<.5)=true; else tf(L>=.5)=true; end quiver(x(tf),...,'color',cmap(i,:)); % <- as above... end us
From: Lisette de Boer on 14 Jan 2010 05:43
> one of the solutions > > cn=3; % <- #conditions > cmap=jet(cn); % <- select your own colors... > tftmpl=false(size(L)); % <- create an all-false template... > for i=1:cn > tf=tftmpl; % <- start with a clean tf... > if i==1 > tf(L<0)=true; > elseif i==2 > tf(L>=0 & L<.5)=true; > else > tf(L>=.5)=true; > end > quiver(x(tf),...,'color',cmap(i,:)); % <- as above... > end > > us Hi. Ok, this works, but it is really slow. I tried to take the quiver outside the for loop, but that failed; it only plotted the ones with L>0.5. Is it possible to take it outside the forloop to increase the speed of my program? Thanks. |