Label scatter data points.

2015 12 4
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更新时间：2015 12 4
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I have a matrix C as follows;
1 3 0.454 54
3 4 0.478 0.356
7 8 4.564 1546
And I plot, scatter(C(:,3),C(:,4))
I want to label every data point as first two columns of matrix. Like, label (0.454,54) as 1 3, (0.478,0.356) as 3 4 and so on.

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回答（1 个）

Walter Roberson
Walter Roberson 2015-12-4

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text( C(:,3),C(:,4), cellstr(str2num(C(:,1:2))) )

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dipak sanap
dipak sanap 2015-12-4
Hey thanks for a reply, but this gives error Error using str2num (line 32) Requires string or character array input. May be I cant use matrix as an input for str2num.
Walter Roberson
Walter Roberson 2015-12-4
Sorry, I have been up all night ;-(
text( C(:,3),C(:,4), cellstr(num2str(C(:,1:2))) )
dipak sanap
dipak sanap 2015-12-4
Hey thanks, it worked. And get some sleep.

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