Classify tumors

classifyTumor.m

% classifyTumor.m
% Andrew Pennebaker
% 4 May 2011

% Assumes matrix contains only one shape (short bar, long bar, square, L)
function classifyTumor(Matrix)
	Cropped = crop(Matrix);

	Size = size(Cropped);

	M = Size(1);
	N = Size(2);

	% Short bar
	if isequal(Size, [3 1]) || isequal(Size, [1 3])
		classification = 'benign';
	% Long bar
	elseif M == 1 || N == 1
		classification = 'neither';
	% Squares and Ls
	else
		classification = 'malignant';
	end

	classification
end

% Remove whitespace (0s) surrounding shapes in a matrix
function crop(Matrix)
	% Crop top
	while not(any(Matrix(1, :)))
		Matrix = Matrix(2:end, :);
	end

	% Crop bottom
	while not(any(Matrix(end, :)))
		Matrix = Matrix(1:end - 1, :);
	end

	% Crop left
	while not(any(Matrix(:, 1)))
		Matrix = Matrix(:, 2:end);
	end

	% Crop right
	while not(any(Matrix(:, end)))
		Matrix = Matrix(:, 1:end - 1);
	end

	y = Matrix
end