rgb2yuv - bad argument #2 to '?'

[balzer82]

I am tryin to to through the tutorial. What did I wrong?

[balzer82]

Solved: Had to index a col.

trainData.data[1] is in shape of

(1,.,.) = 
 Columns 1 to 15
    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0
    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0
    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0

so this works:

for i = 1,trainData:size() do
   trainData.data[i] = image.rgb2yuv(trainData.data[i][1])
end

Is it my fault or is the tutorial out of date or is the dataset different?

[balzer82]

My fault: I downloaded this dataset mentioned here (in the end), which is in different format, so the tutorial in the .lua file won't work