convert to recursion maintaining one input

I have a function:

function [ filled ] = travelDistance( blank )
filled=helper(blank);
function filled = helper(f,x,y)
filled=blank;
[a,b]=size(blank);
if(y<=b)
  filled=travelDistance(f,x,y+1);
elseif (x<=a)
  filled=travelDistance(f,x+1,2);
elseif (f<=1000)
  filled=travelDistance(f+1,2,2);
end
filled(x,y);
if filled(x,y)==0
  if (filled(x-1,y)==f||filled(x,y-1)==f||filled(x,y+1)==f)
      filled(x,y)=f+1;
  end
else
  filled(x,y);
end
end
end

in which I have attempted to create a recursion function. However, when testing, I get an error:

not enough input arguments

How to I create the recursion function, keeping the input "blank"?

Answer 1

[bdlawr]

instead of

filled=travelDistance(f,x,y+1);

do you mean helper(f,x,y+1)?

[amateurintraining]

I did make that mistake and have corrected it. However, I still get an error:

index exceeds matrix dimensions

[bdlawr]

darn. have you gotten any progress on it? i've stuck on this problem for a while now too...it would be great if you can help me out if you got it. will be happy to share if i got the problem down

[amateurintraining]

Yeah, I'm still stuck. If you do find out, please let me know!

[bdlawr]

would you like to collaborate and help each other?