How to make lines at given angles?

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Mariam Shahab
Mariam Shahab 2022-12-21
评论： Mariam Shahab 2022-12-21
Hi all,
Im trying to make 5 lines at the following angles: 90, 180, 270, and 360 degrees.
This is my code so far:
angle=0;
lineLength2 = 20;
angle=[90:90:360];
k=15;
l=12;
plot(k,l); % this is the center. All five lines start from here.
hold on;
e= k + lineLength2*cosd(angle(1));
h= l + lineLength2*sind(angle(1));
plot([k l], [e h]);
hold off;
Can someone kinldy guide me how to make a for loop so that 5 lines are contsructed accroding to their respective angles?
Thanks!

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采纳的回答

Bora Eryilmaz
Bora Eryilmaz 2022-12-21
编辑：Bora Eryilmaz 2022-12-21
Ran in:
Looks like you are actually looking for 4 lines since angles of 0 and 360 would produce the same lines. But here is the for-loop you want:
lineLength2 = 20;
angle=[90:90:360];
k=15;
l=12;
plot(k,l,'ro'); % this is the center. All five lines start from here.
hold on;
for i = 1:numel(angle)
e = k + lineLength2*cosd(angle(i));
h = l + lineLength2*sind(angle(i));
plot([k e], [l h]);
end
hold off;

更多回答（1 个）

Midhulesh Vellanki
Midhulesh Vellanki 2022-12-21
Ran in:
you pretty much have it, you just need to loop over the code for generating the lines and plotting, in MATLAB plotting goes as plot(X,Y). plot([k l], [e h]); becomes plot([k e], [l h]);
angle=0;
lineLength2 = 20;
angle=[90:90:360];
k=15;
l=12;
plot(k,l, '*'); % this is the center. use '*' so that it is visible
hold on;
for i=1:4
e= k + lineLength2*cosd(angle(i));
h= l + lineLength2*sind(angle(i));
plot([k e], [l h]);
end
hold off;

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