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regexformattingdecimaldigits

Regex to match all decimals that come after the 4 first decimals

Well the title says it all.I would like to find a regex that allows me to match the remaining decimals after the 4 first decimals. For the moment I've figured out how to match the number and the 4 first decimals.

^\d+\.\d{0,4}$

but it's the remaining figures that I would like to match on negative and positive numbers.

45.46867431 ---> returns 7431.
5.34 ---> returns nothing.
0.0015 ---> returns nothing.
-135.6584312315 ---> returns 312315.
0.008951 returns ---> returns 51.

I need it to be a regex because it's to clean files, not to format it direclty with a script.

Solution 
  • (?<=\.\d{4})\d+

    this should do the trick.

    demo here : http://regex101.com/r/eW8fR6