how to insert a single value in the matrix ?

hey I am creating this csv file.

I have a matrix

a = [ 2 5 8 ; 5 6 8; 8 7 8 ]

here i just want to insert one value(number of rows) at in the first row, so it will shift the whole matrix one row down !

the output file should look like

3

2 5 8

5 6 8

8 7 8

actually what above i gave you is just an example. The Mat file which i have created is a 697*5.

i am converting it in csv format using csvwrite. but before converitng it into csv i want give a value of total number of rows (i.e 697 in this case) at the top.

the csv file should look like

3

2,5,8

5,6,8

8,7,8

[KALYAN ACHARJYA]

What would be size of output matrix?

[pruth]

actually what above i gave you is just an example. The Mat file which i have created is a 697*5.

i am converting it in csv format using csvwrite. but before converitng it into csv i want give a value of total number of rows (i.e 697 in this case) at the top.

Answer 1

[pruth]

hi,

i figured out the solution for this problem.

M = length(a(:,1))
dlmwrite('test.csv',M,'delimiter',',')
N = a;
dlmwrite('test.csv',N,'delimiter',',','-append');