Azzera filtri
Azzera filtri

How to fill the remaining "N" number of rows, of an already populated vector, with zeros

27 visualizzazioni (ultimi 30 giorni)
It may be confusing, so let me explain. The "GV" data I provided has values in it. It is size (18,001 x 1). I want the to fill the remaining "N" number of rows with zeros. So it may be a (20,000 x 1) or perhaps a (30,000 x 1) vector, but still with the first 18,001 rows filled with the "GV" values. How to do this??
Thank you in advance!

Risposta accettata

MF il 18 Set 2018
Modificato: MF il 19 Set 2018
Here is an example. 1) Let's first make a random vector of the size you have specified and 2) fill the vector with zeros so that it reaches 20000 rows.
  3 Commenti
MF il 19 Set 2018
Thank you dpb. The code was modified. I apologise for any inconveniences.

Accedi per commentare.

Più risposte (2)

Bruno Luong
Bruno Luong il 18 Set 2018
Modificato: Bruno Luong il 18 Set 2018
% ... Compute GV
GV(20000)=0 % if you are sure 20000>length(GV), if not protect with IF

dpb il 18 Set 2018
Alternatively, and perhaps more efficient depending upon how GV is generated/obtained...
GV(Ntotal,1)=0; % preallocate (could also write zeros(Ntotal,1) )
GV(1:N)=GVcalculation(1:N); % put the calculation results in first N locations
Which way is more effective depends on the details we don't know...


Scopri di più su MATLAB in Help Center e File Exchange




Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by