Creating a vector from a set of coordinates
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Joe Cousins
le 20 Août 2021
Commenté : Fangjun Jiang
le 28 Mar 2022
If I have a set of coordinates of:
x = [10.1, 5.4, 7.3, ...];
y = [2.3, 7.4, 8.8, ...];
How can I create a single vector that assigns each point to an integer such that index = [1 2 3 ...]. E.g. the point with index 1 has the coordinates of x(1), y(1)
Appreciate any help.
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Bjorn Gustavsson
le 20 Août 2021
If you do:
r = [x(:),y(:)]; % (:) forms column-vectors of any-dimensional array.
Then you will find:
p1 = r(1,:)
HTH
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Sean Ivan Roxas
le 28 Mar 2022
If I have N number of x and y coordinates, how do I index each pair of coorditnates from 1 to N and store these indices in a vector?
Fangjun Jiang
le 28 Mar 2022
There is no need to "store the indices". length(x), numel(x) or size(x) could return the size information if that is what you want.
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Fangjun Jiang
le 20 Août 2021
You mean like this? There is really no need to do this. Please explain the need.
x = [10.1, 5.4, 7.3];
y = [2.3, 7.4, 8.8];
index=[x;y]';
index(1,:)
ans =
10.1000 2.3000
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