what is meaning of this matlab

N=xlsread('prova1');

t=N(:,3:39);

Answer 1

[DGM]

How about this

% read a spreadsheet with the incomplete filename "prova1"
% it is unknown whether the file actually has no extension
% or whether this is another artifact of MSWindows default behavior
% misleading users into believing that extensions don't exist
N=xlsread('prova1');
% extract the third through 39th column and store in the variable "t"
t=N(:,3:39);

[Muhammad Waheed AZAM]

t=(:,3:39); I just want to know above code. What is tell us above code

[DGM]

% extract the third through 39th column of array N
% and store in the array t
t = N(:,3:39);

https://www.mathworks.com/help/matlab/learn_matlab/array-indexing.html