CODEWITHSUNDEEP
matlabsubplot
Reanimation
Reanimation

Reputation: 3346

Subplot iterating through cell arrays

I'm trying to iterate over my cell array and sub-plot each image that's stored there.

See my code:

for i=1:96
    for j=1:9
        subplot(ceil(sqrt(960)),ceil(sqrt(960)),i)
        imshow(trainingData{2}{i}{j})
    end
end

I have 96 cells (in i column) that each contain 10 images (j column) (of which the first 9 I want to plot).

I know it's pretty pointless because they're so small, but I've started it and seems I can't get it working how I thought, I'd really like to know where I'm going wrong before I just drop it. (also the program may have less images in the future anyway).

So far, it's only sub-ploting 96 entries; it should be 864:

faces

In case my data structure confuses you, here's a little explanation:

trainingData is a Mat file which I load, the first column needs a 1 if you want to access a persons name, or a 2 if you want to their images. The second column contains 96 people (from 1 to 96. The third column is 10 pictures of the person.

eg. trainingData{2}{56}{7} accesses the 56th persons 7th photo.

I'm sure many will see this as an unorthodox data structure, but that's how I thought of doing it at the time. Thanks.

Upvotes: 0

Views: 209

Answers (1)

Luis Mendo
Luis Mendo

Reputation: 112769

The problem seems to be the line

subplot(ceil(sqrt(960)),ceil(sqrt(960)),i)

which causes the 9 images in the inner loop to be overwritten in the same subplot (so only the last one is seen). Change it to

subplot(ceil(sqrt(960)),ceil(sqrt(960)),(i-1)*9+j)

so that all subplots are used.

Upvotes: 2

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