How do I produce a solid green image directly above an imported image

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HG24
HG24 2019-6-3
回答： KSSV 2019-6-3
I have imported an image and I require there to be a solid green image of the same dimensions directly above the imported image. How would I go about doing this? I have attempted using patch but to no success.
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KALYAN ACHARJYA
KALYAN ACHARJYA 2019-6-3
编辑：KALYAN ACHARJYA 2019-6-3
directly above the imported image??
Question is not clear? What result you are expecting? May be you require one green image (plane) having size equal to the processed image. Clarify ?
HG24
HG24 2019-6-3
编辑：HG24 2019-6-3
Essentially I require 2 images, one of a solid green square and beneath it my imported image. I have attached an image of it

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KSSV
KSSV 2019-6-3
I1 = imread('peppers.png') ;
[nx,ny,nz] = size(I1) ;
I2 = zeros(nx,ny,nz) ;
I2(:,:,2) = 255 ;
I12 = vertcat(I2,I1) ;
imshow(I12)

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