Report Is Numeric String? in LabVIEW General Posted August 11, 2017 · Edited August 11, 2017 by Stormshadow I ended up with issues after using this one for over a year because it ignores spaces before the number: http://rosettacode.org/mw/images/f/fb/LabVIEW_Determine_if_a_string_is_numeric.png This is my version that allows NaN, Inf, -Inf to work and spaces are considered as a string. .1 doesn't work, but a condition can be easily added. Sorry for digging up an old thread, but this is the first link on Google and another thread would just get lost. This gives another alternative to the suggestions offered in this thread.