Comparing vector elements by percentage

Angle=[5 10 20 60 180 190 195 300 310], these angles determine the possible directions of robots. If there are 2 robots starting with the same angle or plus minus 5%(5 degrees) they will make collision. I'd like to have the result in on vector such that:[2 2 1 1 1 2 2 1 1]. Any help?

[Geoff Hayes]

yousef - why will two robots collide if they have similar directions? Won't their starting position and speeds also impact whether they collide or not?

[yousef Yousef]

All robots start at the same time with the same speed.Thanks

[yousef Yousef]

 Is there any mistake here?
Angle=[5 10 20 60 180 190 200 300 310];
collision=[];
for i=1:9
targetValue = Angle(i);
tolerance = 0.05 * targetValue;
differences = abs(Angle-targetValue) ; 
inToleranceIndexes = differences < tolerance;
withinTolerance = Angle(inToleranceIndexes)
collision(i)= Angle(inToleranceIndexes)
end 
end

[Stefan Raab]

Hello,

the codeline

collision(i)= Angle(inToleranceIndexes)

won't work, if inToleranceIndexes has more than one value==1. Then Angle(inToleranceIndexes) i.e. is [300 310] and you can't assign a vector to a single element as you do with collision(i).

But a question in general: You say tolerance is 0.05*targetValue, that means your tolerance increases with increasing start-angle. Is this really how it is supposed to be?

Best regards, Stefan

[yousef Yousef]

Hi,the tolerance is plus minus 5 degrees.The tolerance is fixed and can not be changed.I have another try,please check it.

• Angle=[5 10 20 60 180 190 200 300 310];
• collision=[];
• for i=1:9
• c=[];
• targetValue = Angle(i);
• tolerance = 0.5 * targetValue;
• differences = abs(Angle-targetValue) ;
• inToleranceIndexes = differences < tolerance;
• withinTolerance = Angle(inToleranceIndexes);
• c=[c;inToleranceIndexes];
• end
• collision=[collision;c];

Answer 1

[Image Analyst]

As mentioned in your duplicate question there will be no collision unless you have different starting points. And all your code does is tell you that each angle interferes/collides with no other angle except itself, which is pretty useless.