MinT: Error in if (!is.symmetric.matrix(x)) stop("argument x is not a symmetric matrix") : missing value where TRUE/FALSE needed

[jnuvenus]

Hello, when i use MinT function，input 7 days(2018.10.22-28) forecasts and 7 days(2018.10.15-21) residual, but I got the error:

Error in if (!is.symmetric.matrix(x)) stop("argument x is not a symmetric matrix") :
missing value where TRUE/FALSE needed
In addition: Warning messages:
1: In cov2cor(covm) :
diag(.) had 0 or NA entries; non-finite result is doubtful
2: In cov2cor(tar) :
diag(.) had 0 or NA entries; non-finite result is doubtful

How to solve this error? I looking forward to hearing from you

[jnuvenus]

@earowang I found that this error may be caused by the input residual of function MinT() has 0， corm <- cov2cor(covm) in function shrink.estim() return this error, Is <- sqrt(1/diag(covm)) in function cov2cor(covm) return Inf element。Is there any method can solve this problem? Since 0 in residual may occur in the real world data sets.