size reduction and addition operator

I have a file with 5 dimensions netcdf, longitude, latitude, levels, days and hours of pollutant emissions (224x178x7x7x24). I need to add (sum) all emissions of every hour of every day and all levels and also reduce the dimension of five to two dimensions. As a result I should be a matrix of latitude and longitude data combined emissions of the last three dimensions of netcdf file. Do I can indicate what form please? First of all, Thanks

Answer 1

[the cyclist]

I'm not sure I understand, but does this code do what you want?

% Some pretend data
netcdf = rand(224,178,7,7,24);

% Sum over each dimension in turn
sum5 = sum(netcdf,5);
sum4 = sum(sum5,4);
sum3 = sum(sum4,3); % This contains the sum for each lat/long.

Answer 2

[the cyclist]

If the other answer I submitted is what you intended, you can get the same thing with the following one-liner:

% Some pretend data
netcdf = rand(224,178,7,7,24);

sum3 = sum(reshape(netcdf,224,178,[]),3);

[Hernaldo Leyton]

Thanks very much.

It was just what I needed

Regards

[the cyclist]

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