can't detect circle

sorry master... i'm still newbie in matlab.. im just wanna ask that warning : Warning: Attribute vektor not supported. > In circle_Houghpeaks>@(radii)validateattributes(radii,{'double'},{'real','positive','vektor'}) at 77 In circle_Houghpeaks>checkargs at 91 In circle_Houghpeaks at 2 In Hough at 6 if im run that work but that circle not exactly correct in image with circle.. what wrong with that? because im use .gif? or else? please answers my question thanks master.. here..i give that coding.. thanks master