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

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Gabriella Lazzara 2020-10-28

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/629283-i-want-to-randomly-plot-battleships-on-my-board-but-no-outputs-are-present

评论： Rik 2020-11-2

%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);

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Rik 2020-11-2

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.

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Answer 1

Cris LaPierre 2020-10-28

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https://ww2.mathworks.cn/matlabcentral/answers/629283-i-want-to-randomly-plot-battleships-on-my-board-but-no-outputs-are-present#answer_527038

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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')