Creating a vector from a set of coordinates
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Joe Cousins
am 20 Aug. 2021
Kommentiert: Fangjun Jiang
am 28 Mär. 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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Akzeptierte Antwort
Bjorn Gustavsson
am 20 Aug. 2021
If you do:
r = [x(:),y(:)]; % (:) forms column-vectors of any-dimensional array.
Then you will find:
p1 = r(1,:)
HTH
2 Kommentare
Sean Ivan Roxas
am 28 Mär. 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
am 28 Mär. 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.
Weitere Antworten (1)
Fangjun Jiang
am 20 Aug. 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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