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Error using subplot (line 301) Index exceeds number of subplots.

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farhat khan
farhat khan on 24 Jul 2019
Answered: Walter Roberson on 24 Jul 2019
ax = gobjects(imageset.Count,1);
for ii = 1:imageset.Count
ax(ii) = ...
subplot(floor(sqrt(imageset.Count)),ceil(sqrt(imageset.Count)),ii); %Error show me on this line
[~,currName] = fileparts(imageset.ImageLocation{ii});
imshow(read(imageset,ii))
title([num2str(ii),') ' currName],...
'interpreter','none','fontsize',7)
end
expandAxes(ax);

  1 Comment

Star Strider
Star Strider on 24 Jul 2019
The error message is straightforward.
Your ‘ii’ index is greater than floor(sqrt(imageset.Count)) * ceil(sqrt(imageset.Count)).

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Answers (1)

Walter Roberson
Walter Roberson on 24 Jul 2019
>> t = 1:100;
>> find(floor(sqrt(t)).*ceil(sqrt(t)) < t)
ans =
Columns 1 through 25
3 7 8 13 14 15 21 22 23 24 31 32 33 34 35 43 44 45 46 47 48 57 58 59 60
Columns 26 through 45
61 62 63 73 74 75 76 77 78 79 80 91 92 93 94 95 96 97 98 99
For example, suppose the Count is 8, then sqrt(8) is between 2 and 3, so the floor() is 2 and ceil() is 3, and 2*3 = 6, which is less than 8, so when you tried to plot for the 7th you would run out of subplots.

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