How to make lines at given angles?

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!

Answer 1

[Bora Eryilmaz]

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;

[Mariam Shahab]

Thank you! That helps.

Answer 2

[Midhulesh Vellanki]

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;

[Mariam Shahab]

Thank you