# Changes between Version 6 and Version 7 of udg/ecoms/RPackage

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Timestamp:
May 22, 2013 1:11:42 PM (8 years ago)
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 v6 2. In addition, the dictionary provides additional metadata often not explicitly declared in the datasets, regarding the ''time'' aggregation of the dataset (often referred to as the ''cell method''). This includes the fields time_step, which is merely informative, and describes the time interval between two consecutive values, and the lower_time_bound and upper_time_bound, which are the values that should be summed to each verification time to unequivocally delimit the time span encompassed by each value. The dictionary is a comma-sepparated text file (csv), that by default is identified with the same name than the dataset, and the extension ''.dic'', and stored in the same directory than the dataset, although its name and location can be other if adequately specified in the loading functions. The dictionary must be created  ''"by hand"'' by the user, because it requires some ''a priori'' knowledge about the characteristics of the data stored in the dataset, which can be partly obtained from the output of the function dataInventory. The columns of the dictionary are next described: The dictionary is a comma-sepparated text file (csv), that by default is identified with the same name than the dataset, and the extension ''.dic'', and stored in the same directory than the dataset, although its name and location can be other if adequately specified in the loading functions. The dictionary must be created  ''"by hand"'' by the user, because it requires some ''a priori'' knowledge about the characteristics of the data stored in the dataset, that can be partly obtained using the function [https://www.meteo.unican.es/trac/meteo/wiki/SpecsEuporias/RPackage/Functions dataInventory]. The columns of the dictionary are next described: * identifier: this is the name of the standard variable, as defined in the vocabulary