distinguishing exponential (e) from other characters with regexp

omega= 

      '-1.86265e-09</'
      '-1.86265e-09</'
      '-1.74623e-09</'
      '-1.74623e-09</'
      '-1.62981e-09</'
      '-1.62981e-09</'
      '-1.74623e-09</'
      '-1.62981e-09</'
      '-1.86265e-09</'
      '-1.62981e-09</'
      '-1.86265e-09</'
%11x1 cell

I run the below code to extract only numeric parts of rows;

omega= regexp(omega,'[+-]?\d+\.?\d*', 'match');

But it also remove "e". How can I modify above code to get e as a numeric part?

Answer 1

[Stephen23]

'[+-]?\d+\.?\d*([eE][+-]?\d+)?'

PS: If each string contains just one number then you should consider using the 'once' option as well, as this simplifies the outputs:

regexp(... 'match','once');