Easy Visualization of rows of a matrix or more matrices

Easy plot of a matrix (or more than one) with many channels

plot_array function plots in a single figure all rows of the variable X
inputs:
X = matrix [n x m] % n: channels and m: samples
- if the first row is monotonical increasing it will be used as
x axes (e.g. time)
if X is a cell array of matrix with the same size each row of each
cell will be held on the same line
IxRow = cell array of n cells string used for specifying ylabels
TITLE = is a string used as the title of the first subplot
Y_LIMITS = two elements vectors indicating the ylim for each row
outputs:
F_handle = figure's handle
------------
% examples:
% ------------
% plot a matrix of 10 channels and 500 samples
X = rand(10,500);
plot_array(X)
%% ------------
% plot two matrixs of 10 channels and 500 samples
A = rand(10,500);
B = rand(10,500);
X = {A;B};
F_handle=plot_array(X);
%% ------------
% plot two matrixs of 5 channels and 500 samples with ylabels defined as
% the name of the fingers. The title will be defined by the variable TITLE
% and the y axis in the range [-1 1]
A = rand(5,500)-0.5;
B = rand(5,500)-0.5;
IxRow = {'Thumb','Index','Middle','Ring','Little'};
TITLE = 'Fingers Value';
Y_LIMITS = [-1 1];
X = {A;B};
F_handle=plot_array(X,IxRow,TITLE,Y_LIMITS);
%% ------------
% plot one matrix of 5 channels and 100 samples with the first row
% monotonical increasing (used as x axes). And set the y limits as [-15 15];
A = (rand(5,500)-0.5)*15;
dt = 0.01; % step time
Time = dt:dt:length(A)*dt;
X = [Time;A];
Y_LIMITS = [-15 15];
F_handle=plot_array(X,[],[],Y_LIMITS);
%
%% ------------
% plot two matrixs of 5 channels and 100 samples with the first row
% monotonical increasing (used as x axes). And set the y limits as [-15 15];
% And add the legend of the two signals
A = (rand(5,500)-0.5)*15;
B = (rand(5,500)-0.5)*10;
dt = 0.01; % step time
Time = dt:dt:length(A)*dt;
X = {[Time;A],[Time;B]};
Y_LIMITS = [-15 15];
IxLegend = {'Signal A','Signal B'};
F_handle=plot_array(X,[],[],Y_LIMITS,IxLegend);
Author:
Michele Barsotti, PhD student at PERCRO laboratory,
Scuola Superiore Sant'Anna, Pisa, ITALY.
Matlab 2014 is required for changing colors of cell inputs