Distance from points to points.

2014 2 5
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更新时间：2014 3 22
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It's possible to read these coordinates from a text file formatted in this way:

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Walter Roberson
Walter Roberson 2014-2-5

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http://www.mathworks.com/help/stats/pdist.html
The identifier would be the row index of D.

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Francesco
Francesco 2014-2-5
[X, Y] = ndgrid(1:N);
identifiers = arrayfun(@(X,Y) sprintf('%d_%d', X, Y), X, Y, 'Uniform', 0);
When you before said this, what do you mean with N? What's the index of D?
Walter Roberson
Walter Roberson 2014-2-5
You had N points.
D refers to the output of pdist.
Francesco
Francesco 2014-2-5
Thanks. In general If I have n points I have to do this, where rows is the numbers of rows of the txt file.
[X, Y] = ndgrid(1:rows);
identifiers = arrayfun(@(X,Y) sprintf('%d_%d', X, Y), X, Y, 'Uniform', 0);
How Can I use pdist? What can I enter as input?
Walter Roberson
Walter Roberson 2014-2-5
Your previous question asked about using identifiers of that form and defined what the identifiers should look like. This question asks about using linear identifiers of the form 1, 2, 3, ... 6 .... n*(n-1)/2. But you have not given any indication of how the two are to fit together.

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