How do I hold multiple functions in an array in MATLAB?

I am new to MATLAB so I don't even know if this is possible, but here it is... I am trying to print multiple lines in a single graph using the plot function. The problem is, I want to be able to specify how many lines the 开发者_如何学Pythongraph should display by simply changing a variable, for example: {This is the pseudo code to what I want to do}

 number_of_lines = 4;
 x = 0:0.5:5;

 function_output[number_of_lines];

 for n=0:number_of_lines
     function_output[n] = sin(n + x);
 end

 for n=0:number_of_lines
     plot(x,function_output[n]);
 end

I know the above pseudo code isn't exactly MATLAB, but all I want to know if such algorithm is possible to do in MATLAB.

Here's one way to implement your example in MATLAB:

function_output = zeros(numel(x), number_of_lines);  % Initialize a 2-D array
for n = 1:number_of_lines                   % MATLAB uses 1-based indexing
    function_output(:, n) = sin(n + x).';  %' Compute a row vector, transpose
                                            %   it into a column vector, and
                                            %   place the data in a column of
                                            %   the 2-D array
end
plot(x, function_output);  % This will plot one line per column of the array

And here are some documentation links you should read through to learn and understand the above code:

• Matrices and Arrays
• Matrix Indexing
• Arithmetic Operators
• The plot function

Have you looked through the MATLAB manual? -- it is quite well-written with many examples. Copy the example scripts and paste them onto the Command Window and see what happens...

http://www.mathworks.com/help/techdoc/creating_plots/f9-53405.html

You can either write a script or use their plotting tool: http://www.mathworks.com/help/techdoc/creating_plots/f9-47085.html

--- script example

number_of_lines = 4;

x = 0:0.5:5;

function_output=ones(number_of_lines,1)*nan;

figure;hold on;

for n=1:number_of_lines

function_output(n,1) = plot(x,sin(n+x),'color',[1-n/number_of_lines 0 n/number_of_lines]);

end

legend(function_output)

Have fun .