MATLAB Answers

USING FOR LOOP TO PLOT SEVERAL LINES

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F.O
F.O on 2 Nov 2017
Edited: F.O on 2 Nov 2017
L=[4:2:20];
%X coordintates for reflaction point x3=L/2;
%Y coordinates for reflection point IS -5
%X coordinate for rays coming back to the surface (y=0 line) is L and all y is 0
First there are rays that goes from point (0,0) to evrey point on the line y=-5 with L/2 as x coordinates and then from these points rays goes back to the line y=0 with L as x coordinate
I did this
X=[0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10;2 4 3 6 4 8 5 10 6 12 7 14 8 16 8 18 10 20];
Y=[0 -5 0 -5 0 -5 0 -5 0 -5 0 -5 0 -5 0 -5 0 -5 ;-5 0 -5 0 -5 0 -5 0 -5 0 -5 0 -5 0 -5 0 -5 0] ;
plot(X,Y)
title('Ray over a halfspace')
I have plotetd this using matrix but I am required to plot it using for loop command which I cant here !! could anyone thankfully help me out?

  1 Comment

KL
KL on 2 Nov 2017
How should your output look like?

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Answers (1)

KL
KL on 2 Nov 2017
something like this?
plot(X(:),Y(:))

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KL
KL on 2 Nov 2017
hold on
for k = 1:size(X,2)
plot(X(:,k),Y(:,k));
end
F.O
F.O on 2 Nov 2017
L=[4:2:20];
%X coordintates for reflaction point x3=L/2; %Y coordinates for reflection point IS -5
%X coordinate for rays coming back to the surface (y=0 line) is L and all y are 0 here
First there are rays that goes from point (0,0) to evrey point on the line y=-5 with L/2 as x coordinates and then from these points rays goes back to the line y=0 with L as x coordinate
We shouldn't be using the matrix i written in the original question because that was not what required from me . anyway the script you wrote is giving a warning message (Warning: The figure is too large for the page and will be cut off. Resize the figure, adjust the output size by setting the figure's PaperPosition property, use the 'print' command with either the '-bestfit' or '-fillpage' options, or use the 'Best fit' or 'Fill page' options on the 'Print Preview' window. )

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