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How can I save 3d arrays in a cell array?

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Miriã Gollmann
Miriã Gollmann 2018-6-16
评论： Walter Roberson 2018-6-16
I have two 3d arrays (138x155x24) but I can't put it in only cell array. How can I do that?
Thanks for any help!
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James Tursa
James Tursa 2018-6-16
You certainly can put 3D arrays into a cell array. Please post what variables you have and also post the code you are currently trying, and what you want to get as a result.
Miriã Gollmann
Miriã Gollmann 2018-6-16
Sorry, I forgot.
I have seven days with hours values of wind velocity. This variable has 24 data array (lon x lat), with dimension longitude x latitude x hours.
My problem is: Using ncread, save arrays of wind velocity (lon x lat) in X-axis (u) and Y-axis (v) in a cell array. Each line have to show the 24 matrix of data of one day.

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Walter Roberson
Walter Roberson 2018-6-16
data = cell(1,2);
for K = 1 : 2
data{K} = rand(138, 155, 24);
end
and now data is a cell array with two entries, each containing a 138 x 155 x 24 array.
  2 个评论
Miriã Gollmann
Miriã Gollmann 2018-6-16
Thank you!
Should I use exactly this command?
And do you know how can I plot it?
Walter Roberson
Walter Roberson 2018-6-16
dinfo = dir('*.nc');
nfile = length(dinfo);
data = cell(nfile, 1);
for K = 1 : nfile
thisfile = dinfo(K).name;
data{K} = mat2cell( ncread(thisfile, 'velocity'), 3 ); %split on 3rd dimension
end
This would give you a cell array, data, with one entry per file. Each entry would itself be a cell array of length 24, each containing one lon x lat entry.
Note: you might find that you get lat x lon entries instead of lon x lat. If so then
data{K} = mat2cell( permute(ncread(thisfile, 'velocity'), [2 1 3], 3 ); %split on 3rd dimension

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