Hi,
I have a vector with the name of an element that is empty. How can I find out the index of this element? The following doesn't work:

empty.char = grep('[:blank:||:space:]' ,names(v))
if (length(empty.char)>0)
    ....

How about if the name of one element is g_ and the name of other elements g_anyword     where any word contain alphanumeric characters and I want to find the one whose name contain only g_?

Cheers,

Carol

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