sub2ind error: Out of range?

I don't understand the following error:

Error using sub2ind (line 73)
Out of range subscript.

The code

     [R,C,Z] = size(imc); 
    [R,C] = meshgrid(1:1:R,1:1:C); 
    Z=Zf(R); %function
    Z=floor(Z);

    ind = sub2ind(size(image),R,C,Z)

Size(image)= 352 229 277

size(R )=352 229

size(C )=352 229

size(Z)=352 229

I use this line of coding for different images. In some images I get the error and in others not.

The size of the image, R, C and Z is the same in all the images, so I don't understand why the error is 'Out of range subscript'.

Has it something to do with the values of R, C and Z?

The values of R and C are constant for all images.

The Z values are dependent of the function Zf.

I tried this to keep the values of Z within the size of the images:

    domein=size(imc);
    domein_Z=domein(1,3);
  
for ii = 1:numel(Z)
    if (Z(ii) > domein_Z | Z(ii) < 0)
       Z(ii) = 50;
    end
end 

This doesn't make a difference.

[Walter Roberson]

Yes it is the values of those that is the problem. Each must be no larger in value than the size of the corresponding dimension.

[Adam]

Yes, the size of R, C and Z is irrelevant (though they do have to be the same size as each other, of course). It is the values inside them that are being interpreted as subscripts.