MATLAB Contour image in MATLAB

  • Thread starter Az83
  • Start date
8
0
I'm not sure why its doing this, but I am following the example in MATLAB help for Create contour plot of image data, which is

I = imread('circuit.tif');
imcontour(I,3)

But I am using a jpg image in place of the 'circuit.tif' (just a simple black image with white dots), and I am getting the follwoing error:

??? Function IMCONTOUR expected its first input, I, to be two-dimensional.

Error in ==> imcontour>ParseInputs at 112
iptcheckinput(a,{'uint8','int16','uint16','double','logical','single'}, ...

Error in ==> imcontour at 44
[x,y,a,extra_args] = ParseInputs(varargin{:});



What does this mean?
 

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