[R] warnng to an error....

[Duncan Murdoch]

On 17/06/2023 1:16 p.m., akshay kulkarni wrote:
> Dear members,
> 
>                            I have the following code:
> 
>> FUN(OHLCDataEP[[63]])
> Error in (class(x) == "xts") || (class(x) == "zoo") :
>    'length = 2' in coercion to 'logical(1)'
>> traceback()
> 2: ygix(x, "c") at <tmp>#9
> 1: FUN(OHLCDataEP[[63]])
>> class(OHLCDataEP[[63]])
> [1] "xts" "zoo"
> 
> The following is in ygix() :
> 
> if((class(x) == "xts") || (class(x) == "zoo")
> 
> I think this would have been a warning (https://stackoverflow.com/questions/72848442/r-warning-lengthx-2-1-in-coercion-to-logical1) but I am on a ubuntu22.04 machine with R 4.3.0.
> 
> What should I do? Change it to:
> if((class(x)[1] == "xts") || (class(x)[2] == "zoo")) {code}...

Changing it to `if (inherits(x, c("xts", "zoo")))` should do the same. 
The vector of classes in the second argument is read as "any of these 
classes".

Duncan Murdoch