Plot contour on similarity matrix

9 次查看（过去 30 天）

Virtualkeeda 2020-4-28

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/521236-plot-contour-on-similarity-matrix

评论： Star Strider 2020-4-30

I need to plot the contour which looks like the image. The image shows the contour of the laplacian kernel (similarity matrix)

I need to plot such contour on my similarity matrx (nxn) ....lets say the similarity matrix is built from the eucledian distance....

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Star Strider 2020-4-28

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/521236-plot-contour-on-similarity-matrix#answer_428773

Use the surfc function.

6 个评论
显示 4更早的评论隐藏 4更早的评论

Virtualkeeda 2020-4-30

That is indeed a similarity matrix (verified with properties) as you can see the diagonal element is 1 depicting the maximum similarity of 1 if element is same, rest are other similarities.

Do you have atleat idea about what Z constitues in surfc (X,Y,Z)? they used Z=peaks(X,Y). So what each value in the matrix Z says about X and Y?

Star Strider 2020-4-30

The ‘Z’ matrix is what you specify it to be. (Note that ‘X’ and ‘Y’ are not required for surfc. In their absence, those values are set to the indices of the respective dimensions.)

请先登录，再进行评论。

请先登录，再回答此问题。