How to remove many NAN rows

Hello. I´m new to Matlab and I can´t solve the next syntax problem. That is: I have 4 files (.dat). Each one contents a variable number of rows but all of them have 6 columns. What I want is removing 21st rows of each document (which are NAN, by the way) and join them into one file. Can you help me?

Thanks in advance

Answer 1

[Gayatri Menon]

Hi,

Hope the below example helps.

Let the matrix A=[1 2 3;4 5 6;NaN,NaN,NaN].If you want to remove the 3rd row of this matrix, you could use the following command

A(3,:)=[];

In order to concatenate the matrices vertically, 'vertcat' command can be used.

Please refer the below documentation on vertcat:

https://www.mathworks.com/help/matlab/ref/vertcat.html

Thanks

Answer 2

[Raquel Fernández Sánchez]

Thanks a lot Gayatri.Vertcat command successfully solves the concatenate's problem. Im relation to removing rows. Could I write A(1:21,:)=[]; in order to delete a range of rows(from 1 to 21)?