change extension from .mat to .csv or .xls

i have a matlab code but i want to test it with my own data. and the problem i couldn't find a way to insert my own data ...can anyone please help me to change those code lines into a way that i could insert my csv or xls data

here the exemple :

% Get input data   

fname=strcat(dirname,'data',num2str(file),'.mat');

fname1=strcat(fdirname,'forecast',num2str(file),'.mat'); 

load(fname);
data=dataout;

[TastyPastry]

Why do you need to change the file extension if you're using your own input .csv or .xlsx? You should be able to import your own data using csvread(), xlsread() or fopen() with textscan().

Answer 1

[Walter Roberson]

[filename, pathstring] = uigetfile(dirname);
fname = fullfile(pathstring, filename);
data = xlsread(fname);