Check if (x,y) point is within 2d array of (x,y) entries. Where x is one column and y another

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Torbjörn Olsson
Torbjörn Olsson 2020-11-4
评论： Jacqueline Chernen 2022-5-15
Is there a way to check if (x,y) points is within 2d array of (x,y) entries. Where x is one column and y another. Preferably I want a list of boolean variables with 1 if (x,y) point is present in that positon and zero otherwise

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Rishabh Mishra
Rishabh Mishra 2020-11-8
Hi,
I would like to point out that to create a matrix of points (x,y) you can use complex number. For example, consider the matrix defined below:
mat = [1+2i 3+i;
3+4i 1+2i];
The above matrix is used to store the cartesian pairs (1,2), (3,1), (3,4) and (1,2).
Let’s say you want check if point 1+2i is present in the matrix or not. You can use the code below:
mat = [1+2i 3+i;
3+4i 1+2i];
point = 1+2i;
check = [mat == point];
Check is Boolean matrix that lists out the positions in original matrix where the point 1+2i is present.
Feel free to revert for any clarifications or queries.
Hope this helps.

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