is it possible to increment color and markers automatically for a plot in a loop?

Asked by MM on 25 Sep 2012

Latest activity Answered by Bruno Melo on 20 Jun 2019

386 views (last 30 days)

I want to use a loop to plot a series of datasets eg

for jj=1:numel(data)
plot(data{jj}(:,1),data{jj}(:,2),[Marker Color])
end

I'd like to know if there is a built-in function that I could use in my plot command so that Color and Marker are automatically incremented and that at the end of the day each dataset has a different marker/color.

I could do this

markers = {'+','o','*','.','x','s','d','^','v','>','<','p','h'}

and then access it this way:

markers{mod(i,numel(markers))+1}

and something similar for the colors but it's kind of ugly

any comments ?

1 Comment

Ali on 29 Oct 2017

if true
--------------------------------------------------- code start
This is an example for your case 
Input is "Input_Data", two dimension matrix 
Marker_Counter=1;
   figure6=figure;
   Markers = {'+','o','*','x','v','d','^','s','>','<'};
   for i=1:10:size(Input_Data,1)
    TPR=Input_Data(i:i+9,7);
    FPR=Input_Data(i:i+9,8);
plot(FPR,TPR,strcat('-',Markers{Marker_Counter}));
Marker_Counter=Marker_Counter+1;   
hold on
   end
plot([0.5 1],[0.5 1],'--');
legend('Minpts = 100','Minpts = 200','Minpts = 300','Minpts = 400','Minpts = 500','Minpts = 600','Minpts = 700','Minpts = 800','Minpts = 900','Minpts = 1000','','Location','SouthEast');
xlabel('FPR or (1-Specificity)','FontSize',12,'FontWeight','bold'); ylabel('TPR or Spensitivity)','FontSize',12,'FontWeight','bold');
title('ROC Space');
close(gcf);
-------------------------------------------- code end
end
--------------------------------------- picture link preview

4 Answers

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Answer by MM on 25 Sep 2012

Accepted Answer

In fact I think what really fits my need is

hold all

1 Comment

Azzi Abdelmalek on 25 Sep 2012

can you explain how it works?

Link

Answer by Azzi Abdelmalek on 25 Sep 2012

Edited by Azzi Abdelmalek on 25 Sep 2012

color='rmbc'
markers = '+o*.x'
t=0:0.1:10;y=sin(t);
plot(t,y,[markers(2) color(3)])

0 Comments

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Answer by Matt Fig on 25 Sep 2012

Edited by Matt Fig on 25 Sep 2012

You can do this:

set(0,'DefaultAxesLineStyleOrder',{'+','o','*','.','x','s','d','^','v','>','<','p','h'});

Then look:

figure
x = 0:.01:1;
hold all
for ii = 1:10
  plot(x,x.^ii)
end

You should see that the marker changes every time the line color cycles through the colors.

1 Comment

Kaiqi Fang on 4 Mar 2015

It won't change the marker until the default color pool has been cycled through. From the following post, if you just use one color type,

set(0,'defaultaxescolororder',[0 0 0]);

, then you can let the marker change every time.

http://www.mathworks.com/matlabcentral/answers/29824-changing-the-style-in-a-loop-with-hold-all

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Answer by Bruno Melo on 20 Jun 2019

Try this function, it worked out for me...

https://www.mathworks.com/matlabcentral/fileexchange/52091-plot-with-linestyles-and-markers#feedbacks

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