How to make a line of fixed length?
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Commented: Star Strider on 29 Nov 2022
I want to make a line that has a fixed length and it has a partciular direction. I would appreciate any suggestions for this. Thanks!
It is relatively straightforward to write an anonymous function for this —
createLine = @(startpt, slope, len) [startpt(1) startpt(1)+len.*cos(atan(slope)); startpt(2) startpt(2)+len.*sin(atan(slope))];
slope = rand % Scalar
startpoint = rand(1,2) % Two-Element Vector
long = 10*rand % Scalar
linevec = createLine(startpoint, slope, long)
Check = [tan(atan2(diff(linevec(2,:)), diff(linevec(1,:)))) hypot(diff(linevec(2,:)),diff(linevec(1,:)))]
title(sprintf('Line from (%.2f, %.2f) to (%.2f, %.2f), slope %.2f, length %.2f', [linevec(:,1); linevec(:,2); slope; long]))
Experiment with the ‘createLine’ function.
More Answers (1)
Vilém Frynta on 29 Nov 2022
You can specify length with numbers of your choice.
You can specify direction numerically as well, you just need to use your imagination and get creative.
x = [1 11];
y = [2 22];
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