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I run into a problem when converting character of percentage to numeric. E.g. I want to convert "10%" into 10%, but
as.numeric("10%") returns NA. Do you have any ideas?
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To convert character to numeric in R, use the as. numeric() function. The as. numeric() is a built-in R function that creates or coerces objects of type “numeric”.
Convert character to numeric. To convert character values to numeric values, use the INPUT function. new_variable = input(original_variable, informat.); The informat tells SAS how to interpret the data in the original character variable.
numerical. To convert a character vector to a numeric vector, use as. numeric(). It is important to do this before using the vector in any statistical functions, since the default behavior in R is to convert character vectors to factors.
To calculate percent, we need to divide the counts by the count sums for each sample, and then multiply by 100. This can also be done using the function decostand from the vegan package with method = "total" .
10% is per definition not a numeric vector. Therefore, the answer NA is correct. You can convert a character vector containing these numbers to numeric in this fashion:
percent_vec = paste(1:100, "%", sep = "") as.numeric(sub("%", "", percent_vec)) This works by using sub to replace the % character by nothing.
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