Error using svd Input to SVD must not contain NaN or Inf.

Question

Yapo OBOUE 2019-6-26

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/469009-error-using-svd-input-to-svd-must-not-contain-nan-or-inf

评论： Suddhasattwa Das 2021-4-5

采纳的回答： Shashank Sharma

Hello everyone, I meet a problem with my code. when I run this code below, I get this error :

Error using svd Input to SVD must not contain NaN or Inf.

Error in fxy_I2_5Ddamp_nx_ny>P_RD (line ....)

[U,S,V] = svd(din);

How do I solve this problem ? Thanks.

function [dout]=P_RD(din,N,K)
[U,S,V] = svd(din);
s = SoftTh(diag(S), 2);
j=1:N
S=diag(s);
    for j=1:N
         S(j,j)=S(j,j)*(1-S(N+1,N+1)^K/S(j,j)^K);
    end    
        dout=U(:,1:N)*S(1:N,1:N)*(V(:,1:N)');
return

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infinity 2019-6-26

编辑：infinity 2019-6-26

Hello,

According to the error, it could be seen that the matrix "din" contain "NaN" or "Inf". To solve your problem, you need to check why do you have NaN or Inf in the matrix "din".

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Answer 1

Shashank Sharma 2019-6-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/469009-error-using-svd-input-to-svd-must-not-contain-nan-or-inf#answer_381033

编辑：Shashank Sharma 2019-6-27

Run any(any(isnan(din))) and any(any(isinf(din))). If the output is 1 it means your matrix din has an infinity value or a not a number value. This is causing the svd function to error out.

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MatLabMcLovinPotato 2021-1-17

I was able to create a sset sys, went to make it again with the same data and got this error about the NaN and Inf. I tried your suggestion (thank you!) and have 0 for both NaN and Inf. Yet still getting the same error?

Suddhasattwa Das 2021-4-5