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meas, k nearest neighborhood

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Ahsen Feyza Dogan
Ahsen Feyza Dogan 2019 年 7 月 2 日
回答済み: Star Strider 2019 年 7 月 2 日
Hi,
In this code I don't understand that what meas does, and it assings all row and 3rd and 4th column to x.
load fisheriris
x = meas(:,3:4);
gscatter(x(:,1),x(:,2),species)
Thank you

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Star Strider
Star Strider 2019 年 7 月 2 日
Apparently ‘meas’ is a matrix, The ‘x’ assignment takes columns 3 and 4 from it.
It would have been just as easy (and likely more efficient) to simply code it as:
gscatter(meas(:,3),meas(:,4),species)
and remove ‘x’ altogether.

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