.append() equivalent in MATLAB

Hi all,

I have a doubt regarding the function in MATLAB which will perform same function as performed by .append() in PYTHON. Do you have any function in mind which will use same activity of extending a list in MATLAB.

Thanks in advance!

Answer 1

[Stephan]

>> List = [1 2 3; 4 5 6]

List =

     1     2     3
     4     5     6

>> List = [List; 7 8 9]

List =

     1     2     3
     4     5     6
     7     8     9

[Swati Sarangi]

Thanks for such an appropriate and quick reply.

[Saunok Chakrabarty]

Hi Stephan,

Is there a function that expands an array dynamically inside a loop, like append() in Python? Like it will keep adding elements based on a specified condition within the loop.

Regards,

Saunok

[Cem Keske]

Hello,

You can use this directly to expand the array dynamically:

array = [array, other_array];

For example:

array = [];
for i = 1:10
    if mod(i,2) == 0
        array = [array, i]
    end
end

array = 2

array = 1×2

2 4

array = 1×3

2 4 6

array = 1×4

2 4 6 8

array = 1×5

2 4 6 8 10

I hope this helps,

Regards,

Cem

Answer 2

[Amir Azadeh Ranjbar]

yes...

you can use end :

there are many way to do this :

examples :

ThemeCopy

x = [1,2,3,4,5] ;
y = [6,7,8] ;
Num_Add = size(y,2) ;
counter = 1 ;
while counter <= Num_Add
    Last = size(x,2)+1 ; 
    x(1,Last) = y(1,counter) ;
    counter = counter + 1;
end
disp(x)

1 2 3 4 5 6 7 8

also you can python in matlab very easy :

ThemeCopy

data = py.list([1,2,3,4]) ;
data.append(9)
double(data)

ans = 1×5

1 2 3 4 9

Another example that can be used to add rows to the table

ThemeCopy

data_mat = [1;2;3;4] ;
data = table(data_mat) ;
new_data = {5} ;
data = [data;new_data]