I want to randomly plot battleships on my board, but no outputs are present?

%Board 
size = 10 %A-J on regular battleship and 1-10 
board = zeros(size);
axis([0,10,0,10]);
title('Battleship')
letters = {'A';'B';'C';'D';'E';'F';'G';'H';'I';'J'};
set(gca,'xtick',[1:10],'xticklabel',letters);
grid on
disp(board);
%ship lengths 
destroyer = [2,2];
submarine = [31,31,31];
cruiser = [32,32,32]; 
battleship = [4,4,4,4]
carrier = [5,5,5,5,5]
x1 = randi(10,1); 
y1 = randi(1,10); 
x2 = x1 + length(submarine) - 1;
col2 = y1;
board(x1:x2, y1) = submarine(1);

[Rik]

Regarding your flag ("delete question not necessary anymore"): that is not how this forum works. If you decide to edit away your question, everybody with editing privileges can restore it from this backup.

Answer 1

[Cris LaPierre]

You are taking two approaches simultaneously in your code. You create a plot where I suspsect you want to visualize the ships, but then you are populating a matrix with the values. In order for the ships to appear on your axes, you must plot them somehow (plot, scatter, line, etc).

If you want to display board instead, perhaps somethink like heatmap will work?

%Board 
size = 10 %A-J on regular battleship and 1-10 

size = 10

board = zeros(size);

%ship lengths 
destroyer = [2,2];
submarine = [31,31,31];
cruiser = [32,32,32]; 
battleship = [4,4,4,4];
carrier = [5,5,5,5,5];
x1 = randi(10,1); 
y1 = randi(1,10); 
x2 = x1 + length(submarine) - 1;
board(x1:x2, y1) = submarine(1)

board = 10×10

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 31 0 0 0 0 0 0 0 0 0 31 0 0 0 0 0 0 0 0 0 31 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

figure
heatmap(board)
title('Battleship')
letters = {'A';'B';'C';'D';'E';'F';'G';'H';'I';'J'};
set(gca,'XDisplayLabels',letters);
colorbar off