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

3 views (last 30 days)
Gabriella Lazzara on 28 Oct 2020
Commented: Rik on 2 Nov 2020
%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);

#### 1 Comment

Rik on 2 Nov 2020
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.

Cris LaPierre on 28 Oct 2020
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