用逗号分割字符串，但不是数字 R 中的逗号

Question

I have a string that looks like:

a <- "900, 1,100, 1000"

I want to split the string by commas that are not within a number to obtain:

"900" "1,100" "1000"

I can split using all the commas b <- strsplit(a, ',') however this gives me the output "900" "1" "100" "1000" which I don't want.

Answer 1

好吧，如果您在模式中包含空格，这应该很容易：

b <- strsplit(a, ', ')