% save and who/whos

clear all
A = [1 2 3 4 5];   B = 12.5;   C = rand(4);
save savefile;
A = [6 7 8];
save savefile A -append;

mydataVariables = who('savefile.mat')
mydataVariables = whos('savefile.mat')


% load

help load


%example:

% Using regular expressions, load from MAT-file mydata.mat those 
% variables with names that begin with Mon, Tue, or Wed:

load('mydata', '-regexp', '^Mon|^Tue|^Wed');



% dlmwrite: Write matrix to ASCII-delimited file

% example1:
m = magic(3);
dlmwrite('myfile.txt', m, 'precision', '%.6f')
type myfile.txt


% example2:
M = magic(3);
dlmwrite('myfile.txt', [M*5 M/5], ' ')

dlmwrite('myfile.txt', rand(3), '-append', ...
   'roffset', 1, 'delimiter', ' ')

type myfile.txt

% dlmread
dlmread('myfile.txt')

% comma limited files: 
csvread('myfile.txt')
csvwrite('.....'):


% diary command

help diary