CODEWITHSUNDEEP
matlabplotmarker
user2041602
user2041602

Reputation: 179

matlab plot markers based on third parameter

I am plotting data in X-Y, x being time and y being that intensity at that point. However, I was wondering if I could change the type of marker based on a third value?

I am doing the following right now. I'd like to be able to set the marker shape based on a value from 1-6 in zVector, so the marker would be changing throughout the figure.

dataAdjusted = dlmread('file.csv');

xVector = dataAdjusted(:,1)
yVector = dataAdjusted(:,2)
zVector = dataAdjusted(:,3)  

figure 
hold on

plot(xVector, yVector, '-ro','MarkerSize',3, 'MarkerEdgeColor', 'k', 'MarkerFaceColor','k')

Upvotes: 3

Views: 657

Answers (1)

bla
bla

Reputation: 26069

Here's an example how to accomplish that for z values that go from 1 to 3 ...

x=rand(1,10);
y=rand(1,10);
z=randi(3,1,10);

plot(x(z==1),y(z==1),'o',...
     x(z==2),y(z==2),'x',...
     x(z==3),y(z==3),'s')

I think you can see how it can be generalized using a for loop quite easily.

Edit - here's a for loop implementation:

markerlist='sox';
colorlist='rgb';
for n=1:max(z)
plot(x(z==n), y(z==n), markerlist(n),'MarkerSize',5, 'MarkerEdgeColor', 'k', 'MarkerFaceColor',colorlist(n)) 
hold on
end 
hold off

enter image description here

Upvotes: 3

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