MATLAB: Matlab confirm is input is not an array

arrayintegerswhile loop

Confirm that the input is a positive integer and not an array. I got this far, but when I type in [1 2 3] is does not prompt to enter in the positive integer again.

n = input('Enter in a positive integer: ')
while (n<0) & (isvector(n))
    n = input('Enter in a positive integer: ')
end

Best Answer

n = input('Enter in a positive integer: ')
while n<0 | numel(n)>1 | fix(n)~=n
  n = input('Enter in a positive integer: ')
end

Related Solutions

MATLAB: I’m not sure how to make the elements of the matrix multiples of 7

The randi function to the rescue!

The randi function will give you random integers, so all you then have to do is to decide on the maximum integer, the multiply the result by 7:

m = 3;
n = 4;
Matrix7 = randi(100, m, n) * 7;

A non-random option:

m = 3;
n = 4;
V = 1:(m*n);
Matrix7 = reshape(V', m, n)'*7;

MATLAB: Confirm the number of dimensions

Try this:

cityNumber = data(:, 1);
numCoordinates = size(data, 2) - 1; % should be 2 or 3
x1 = data(:,2);
x2 = data(:,3);
if numCoordinates >= 3
	x3 = data(:,4);
end

if numCoordinates == 2
	plot(x1, x2, 'x', 'MarkerSize', 10);
	caption = '2 Coordinates';
elseif numCoordinates == 3
	plot3(x1, x2, x3, '*', 'MarkerSize', 10);
	caption = '3 Coordinates';
end
grid on;
xlabel('x1', 'FontSize', 20);
ylabel('x2', 'FontSize', 20);
if numCoordinates == 3
	zlabel('x3', 'FontSize', 20);
end
title(caption, 'FontSize', 20);

Best Answer

Related Solutions

MATLAB: I’m not sure how to make the elements of the matrix multiples of 7

MATLAB: Confirm the number of dimensions

Related Question