How to solve "Not Enough Input Arguments" error in a recursive function?

The goal of my program is to create Sierpinski Carpet. When i run the code i get the "Not Enough Input Arguments" error.

function out= MyFunction(x, y ,width, depth, max_depth)
clc        
if depth > max_depth
    
    rectangle('Position',[x, y, width, width]);
    
else
    
    width=width/3;
    MyFunction(x,          	 y,			width,    depth+1);
    MyFunction(x+width,     	 y,             	width,    depth+1);
    MyFunction(x+width+width,  y,             	width,    depth+1);
    MyFunction(x,           	 y+width,         	width,    depth+1);
    %MyFunction(x,          	 y+width,         	width,    depth+1); %middle empty
    MyFunction(x+width+width,  y+width,         	width,    depth+1);
    MyFunction(x,           	 y+width+width,     	width,    depth+1);
    MyFunction(x+width,        y+width+width,     	width,    depth+1);
    MyFunction(x+width+width,  y+width+width,     	width,    depth+1);
end
       
end

When i call the function in console i get the error for example:

> MyFunction(0,0,9,0,3)

Answer 1

[harsha001]

You defined the function to have 5 arguments (in the first line) yet in your recursive calls, you are only passing 4 arguments.

You are missing a 'max_depth' argument in all your recursive calls to MyFunction in the 'else part':

function out= MyFunction(x, y ,width, depth, max_depth)
clc        
if depth > max_depth
    
    rectangle('Position',[x, y, width, width]);
    
else
    
    width=width/3;
    MyFunction(x,          	 y,			width,    depth+1, max_depth);
    MyFunction(x+width,     	 y,             	width,    depth+1, max_depth);
    MyFunction(x+width+width,  y,             	width,    depth+1, max_depth);
    MyFunction(x,           	 y+width,         	width,    depth+1, max_depth);
    %MyFunction(x,          	 y+width,         	width,    depth+1); %middle empty
    MyFunction(x+width+width,  y+width,         	width,    depth+1, max_depth);
    MyFunction(x,           	 y+width+width,     	width,    depth+1, max_depth);
    MyFunction(x+width,        y+width+width,     	width,    depth+1, max_depth);
    MyFunction(x+width+width,  y+width+width,     	width,    depth+1, max_depth);
end
       
end

[Kuba]

Thank you very much this solves my question. I made such a simple mistake : )