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R tutorial question

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KM
Kaylyn McCoy, modified 4 Years ago.

R tutorial question

Youngling Posts: 6 Join Date: 6/12/17 Recent Posts

For data exploration in the R tutorial working with SST data, when you isolate the data 'sst=ncvar_get(nc, v1)', and then view the dimensions 'dim(sst)', I understand that you have a 3D array: 301, 261, 12; but how do you know that it represents "301 rows corresponding to longitudes, 261 columns corresponding to latitudes for each of the 12 time steps"?

MA
Melanie Abecassis, modified 4 Years ago.

RE: R tutorial question

Youngling Posts: 65 Join Date: 6/12/17 Recent Posts

Because that's the way NetCDF files are *usually* structured. And you can double check by outputting lat and lon and looking at their lengths to double check. If the data provider built the files properly, this should be the structure.