Connecting line between different points obtained from a for-loop
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Hello, I have obtained a plot of set of points from a for-loop as shown above. I simply want to add a line connecting these points. The function plot(x,y,'-*') does not work since these points are from different iterations. Please can someone help. Thanks.
2 Comments
Colian Giannini
on 12 Oct 2016
about this?
x=1:20;
y=zeros(length(x));
for i=1:length(x);
y(i)=x(i)+2;
end
plot(x,y,'-*')
Answers (3)
Image Analyst
on 14 Oct 2016
These work:
% Plot all at once:
subplot(2, 1, 1);
x = 1 : 20;
y = zeros(1, length(x));
for i = 1 : length(x)
y(i) = x(i) + 2;
end
plot(x,y,'b-*')
grid on;
% Plot a point at a time:
subplot(2, 1, 2);
grid on;
ylim([0, 22]);
xlim([0, 20]);
hold on;
x = 1 : 20;
y = zeros(1, length(x));
for i = 1 : length(x)
y(i) = x(i) + 2;
plot(x(1:i),y(1:i),'b-*')
drawnow;
pause(0.3);
end
Of course you could also vectorize and do away with the for loops
x = 1 : 20;
y = x + 2;
plot(x,y,'b-*')
grid on;
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