How to get a 2D matrix estimate from Ksdensity for bivariate data

조회 수: 26 (최근 30일)
Hammam Orabi
Hammam Orabi 2020년 10월 16일
댓글: Nagasai Bharat 2020년 10월 23일
Hello,
I'm trying to get the function ksdensity to return a matrix instead of a vector when I use it for a bivariate input (signal of I and Q).
The problem is that ksdensity only returns a vector even if the points are inputted as a 2 column matrix.
Can anybody help ?

답변 (1개)

Nagasai Bharat
Nagasai Bharat 2020년 10월 21일
Hi,
From my understanding you are trying to get a 2D output from the bivariate data and using the ksdensity function you are getting a vector. The following MATLAB Answer would likely help you achive your objective.
  댓글 수: 2
Hammam Orabi
Hammam Orabi 2020년 10월 21일
Hi,
You are right in your understanding. But the difference is that for my data (Baseband modulated signal) the variables are not independent, that's why I cant generate KSD for each var and multiply their pdfs.
Nagasai Bharat
Nagasai Bharat 2020년 10월 23일
Hi,
There is an entry in the file exchange that does 2-d kernel density esimation:
You could try this.

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