# In an assignment A(I) = B, the number of elements in B and I must be the same.

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reyadh Albarakat il 13 Apr 2015
Commentato: reyadh Albarakat il 15 Apr 2015
Hi Guys, first of all I am beginner in Matlab. I want to get Average Values of NDVI for each month during a year. I used this
i=1:12;
jan(i)=ndvi_avhrr_monthly_avg{i};
and then I got this Error (((In an assignment A(I) = B, the number of elements in B and I must be the same.))).
Thanks
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Jan il 13 Apr 2015
pfb il 13 Apr 2015
Modificato: pfb il 13 Apr 2015
exactly the same question was asked a few minutes before :)
And possibly a million times before.

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### Risposta accettata

Jan il 13 Apr 2015
jan(i) is a scalar and obviously the contents of ndvi_avhrr_monthly_avg{i} is not a scalar. Therefore the right hand side cannot be assigned to the left hand side.
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Image Analyst il 13 Apr 2015
ndvi_avhrr_monthly_avg{i} needs to be a single number to assign it to an element of an array like that. What does this say
cellContents = ndvi_avhrr_monthly_avg{i}
whos cellContents
It will be more than one element. For exmaple cellContents might be a 42 by 300 matrix. So which element do you want to take from cellContents and stuff into jan(i)? Or you can make a structure and just attach the whole array:
simon.theArray = cellContents; % Transfer ALL of the elements.
reyadh Albarakat il 15 Apr 2015
Thank you so much Jan

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