How can I break a long column vector (281820X1) into 140 short column vectors (2013X1)?

I collected the raw data from a Raman image which acquired 140 Raman spectra from a 14X10 rectangular area. The resulting data file contains 281820 rows for all the spectra so how should I restore the 140 individual data files?

Answer 1

[Les Beckham]

Use reshape

data = (1:281820)';
cols = 140;
rows = numel(data) / cols;
data_reshaped = reshape(data, [rows cols]);
whos

  Name                    Size               Bytes  Class     Attributes

  cmdout                  1x33                  66  char                
  cols                    1x1                    8  double              
  data               281820x1              2254560  double              
  data_reshaped        2013x140            2254560  double              
  rows                    1x1                    8  double              

Also, if you are just getting started with Matlab, I would highly recommend that you take a couple of hours to go through the free online tutorial: Matlab Onramp

[Xuyang He]

Thanks for telling me the "reshape" function. It works! I really appreciate your help!

[Dyuman Joshi]

Hello @Xuyang He, if this answer solved your problem, please consider accepting the answer.

[Xuyang He]

Sure, sorry for the delayed response.

[Les Beckham]

You are quite welcome. Thanks for accepting the answer.