Using numpad 8 2 6 4 as North South East West

Hi! I wanted to create a code where I can plot a variable using my numpad 8, 2, 6, 4, as North, South, East, West. The distance is also coded as an integer value. For example, the inputs 8 5 will mean the variable will move towards the North by a distance of 5 units. Assuming that the variable is initially at location (0,0)

[Samuel Angelo Regalado]

I have created a code but my code only seems to plot (x,y) variable :(( sorry I just started coding excuse my mistakes

choice = menu('Select one', '(1) Start', ' (2) Reset', '(3) Quit', '(0) Location');

if choice==1
    clear;
clear all;
clc;
m=10;

for n = 1:m-1;
if n == 1;
    xn = input('Input Direction: ');
    fprintf('\n');
    yn = input('Input Distance: ');
    fprintf('\n'); 
    
    x = [xn];
    y = [yn];

        fprintf('%d \n\n %f', x, y);
        fprintf('\n\n');
        plot(x,y,'-o','MarkerEdgeColor','red');
else
    

        xn = input('Input Direction: ');
        fprintf('\n');
        yn = input('Input Distance: ');
        fprintf('\n');
        xadd = x(n-1);
        yadd = y(n-1);
        x = [x xn+xadd];
        y = [y yn+yadd];
 

        fprintf('\n\n');
        
        xor = 0;
        line([-max(x),max(x)],[xor,xor]);
        hold on
        
plot([0 0],[-max(y) max(y)]);
        hold on
        
        plot(x,y,'-o','MarkerEdgeColor','red');
        grid on;
             
        
ax = gca;
ax.XAxisLocation = 'origin';
ax.YAxisLocation = 'origin';

    end
end

fprintf('here are your values of x and y\n')
x
fprintf('\n');
y

elseif choice==2
    clear;
clear all;
clc;
m=5;

for n = 1:m-1;
if n == 1;
    xn = input('Input Direction: ');
    fprintf('\n');
    yn = input('Input Distance: ');
    fprintf('\n');
    
    x = [xn];
    y = [yn];

        fprintf('%d \n\n %f', x, y);
        fprintf('\n\n');
        plot(x,y,'-o','MarkerEdgeColor','red');
else
    

        xn = input('Input Direction: ');
        fprintf('\n');
        yn = input('Input Distance: ');
        fprintf('\n');
        xadd = x(n-1);
        yadd = y(n-1);
        x = [x xn+xadd];
        y = [y yn+yadd];
 

        fprintf('\n\n');
        
        xor = 0;
        line([-max(x),max(x)],[xor,xor]);
        hold on
        
plot([0 0],[-max(y) max(y)]);
        hold on
        
        plot(x,y,'-o','MarkerEdgeColor','red');
        grid on;
             
        
ax = gca;
ax.XAxisLocation = 'origin';
ax.YAxisLocation = 'origin';

    end
end

fprintf('here are your values of x and y\n')
x
fprintf('\n');
y

elseif choice==3
    disp = ('Normal program termination. Goodbye!')
    
else
     plot(choice==1,'-o','MarkerEdgeColor','red');
     
end

Answer 1

[Jos (10584)]

Perphaps my getkey function may be of use to you:

https://www.mathworks.com/matlabcentral/fileexchange/7465-getkey