need to display image not found

I have a code below, in which in displays when the query image is from same dataset (dataset consists of 70 images, if i take query image from dataset my image is displayed), if i take other image which is not in dataset, i need to display image not found plz help,

t = {'descend','ascend'}
imageCells  = arrayfun(@(i1)sort(rand(200,200,3),randi(3),t{randi(2)}),1:8,'un',0)

A=centroid;
query=G1q;
t = abs(A - query) < 100*eps
if any(t),figure, imshow(imageCells{t}); end

Answer 1

[Walter Roberson]

if any(t),figure, imshow(imageCells{t});
else disp('image not found plz help'); end