"Expected a string scalar or character vector for the parameter name. "

i have facing error

to implement the gabor filter

Error using gabor (line 16) 
Expected a string scalar or character vector for the parameter name.
Error in imgaborfilt>parseInputs (line 169)
    GaborBank = gabor(varargin{2:end});

here is my code

I = imread('abc.jpg');
I = double(rgb2gray(I));
wavelength = 4;
orientation = 90;
[mag,phase] = imgaborfilt(I,wavelength,orientation);
figure
subplot(1,3,1);
imshow(I);
title('Original Image');
subplot(1,3,2);
imshow(mag,[])
title('Gabor magnitude');
subplot(1,3,3);

[Guillaume]

what does

which gabor -all

return?

If your script/function is called gabor.m, you will have to give it a different name.

Answer 1

[Oulayaa LAHSARI]

Error using imageDatastore (line 139)

Expected a string scalar or character vector for the

parameter name.

[Walter Roberson]

The original poster did not use imageDatastore anywhere, so it is difficult to understand how your proposed answer is a solution to their question ?