Plot blocks of points with a specific color
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Hi,
I got these points and I want to colour every 4 points with a specific color:
x = [ 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5]';
y = [ 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5]';
Point 1:4 yellow, 5:8 blue, 9:12 red, etc, and I want to plot all the 25 entries. the last "block" with just have the row number 25.
I though doing this:
[n,~] = size(x);
block_points = 4;
t_start = 1:block_points:n;
t_end = block_points:block_points:n;
but I got a problem with t_end, only has size 6, while t_start has size 7, due to the last block that only has 1 number.
Thanks for your help
4 Comments
madhan ravi
on 28 Nov 2018
Edited: madhan ravi
on 28 Nov 2018
ok so the effort put in order to help is for nothing? Just leave it open just don‘t accept the answer. Post your solution as an answer and accept it.
Accepted Answer
More Answers (1)
madhan ravi
on 26 Nov 2018
Edited: madhan ravi
on 26 Nov 2018
EDITED
xx = [ 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5]';
yy = [ 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5]';
x=reshape(xx(1:end-1),4,[]);
y=reshape(yy(1:end-1),4,[]);
s={'-oy','-ob','-or','-og','-om','-oy'};
for i=1:size(x,1)
plot(x(i,:),y(i,:),s{i})
hold on
end
plot(xx(end),yy(end),'ok',...
'markerFaceColor','k')
9 Comments
madhan ravi
on 26 Nov 2018
Edited: madhan ravi
on 26 Nov 2018
"I would transform a 26x1 matrix into a 4x7 matrix, with the 2 last entries could be NaN values for example."
matrix=[rand(26,1);zeros(2,1)] %this will do what you want just pad the remaining elements with zeros
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