I want to generate a fixed percent of random points on a straight line joining two points.

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SUSHMA MB 2016-8-3

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https://ww2.mathworks.cn/matlabcentral/answers/298220-i-want-to-generate-a-fixed-percent-of-random-points-on-a-straight-line-joining-two-points

编辑： SUSHMA MB 2016-8-3

I want to generate 5 percent of the randomly generated numbers in a fixed straight line equation. For example, i have two points (x1, y1) and (x2, y2), and now i have drawn a straight line between the two points, with the help of straight line equation. Now i want 100 random numbers to be generated out of which 5 percent of those random numbers should fall in the straight line that is joined between the two points.

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SUSHMA MB 2016-8-3

let the boundary be a square of sides 10m side length.

SUSHMA MB 2016-8-3

在 MATLAB Online 中打开

Let the

         XY_BOUNDARY = [0,70,0,50};
         position = [XY_BOUNDARY(2) - XY_BOUNDARY(1); XY_BOUNDARY(4) - XY_BOUNDARY(3)] .* rand(2,1) ...
               + [XY_BOUNDARY(1);XY_BOUNDARY(3)];

In the above code i get a random number within the specified boundary. Now i want the random point position in a specified boundary as well as on the line connecting two points (x1,y1), and (x2,y2)...Please tell me how to do this

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采纳的回答

Torsten 2016-8-3

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https://ww2.mathworks.cn/matlabcentral/answers/298220-i-want-to-generate-a-fixed-percent-of-random-points-on-a-straight-line-joining-two-points#answer_230632

在 MATLAB Online 中打开

Instead of generating 100 random numbers, use "rand" to generate 5 random numbers on [0:1] and set the points to

lambda=rand(5,1);
x=x1+lambda*(x2-x1); 
y=y1+lambda*(y2-y1);

Best wishes

Torsten.

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SUSHMA MB 2016-8-3

But can you plz tell me that, if 100 points are their, then how can i make atleast 5 points to appear it on a line

SUSHMA MB 2016-8-3

编辑：SUSHMA MB 2016-8-3

在 MATLAB Online 中打开

Let the

         XY_BOUNDARY = [0,70,0,50};
         position = [XY_BOUNDARY(2) - XY_BOUNDARY(1); XY_BOUNDARY(4) - XY_BOUNDARY(3)] .* rand(2,1) ...
               + [XY_BOUNDARY(1);XY_BOUNDARY(3)];

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