split a string with strsplit unique

Question

Patrick Brown 2017-4-6

评论： Star Strider 2017-4-7

I have this string

a='Position=a.Velocity=b.Acceleration=c.'
strsplit(a,{'Velocity=','.'})
ans = 
      'Position=a'    'b'    'Acceleration=c'    ''

but the result I want in ans is only b how I can do it?

Answer 1

Star Strider 2017-4-6

Experiment with the regexp function.

Example:

a='Position=a.Velocity=b.Acceleration=c.';
Vel = regexp(a, '(?<=Velocity=)\w', 'match')
Vel =
    cell
      'b'

Patrick Brown 2017-4-7

and in the case that you have more than one letter for example

a='Position=ah.Velocity=bl.Acceleration=ck.';

Star Strider 2017-4-7

... add a ‘+’ after the ‘\w’ to match more than one letter:

a ='Position=ah.Velocity=bl.Acceleration=ck.';
Vel = regexp(a, '(?<=Velocity=)\w+', 'match')
Vel =
    cell
      'bl'