# Changes between Version 3 and Version 4 of EcomsUdg/RPackage/Functions

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Timestamp:
Apr 16, 2013 10:45:58 AM (9 years ago)
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 v3 The ''SPECS-EUPORIAS Data Portal'' can be remotely accessed from R via the [mtl:browser:MLToolbox/trunk/MLToolbox_experiments/antonio/system4/r/loadSystem4.R loadSystem4.R] function. Note that this function is part of a more comprehensive R package currently under development. This function automatically cares about the proper location of the right indices for data sub-setting across the different variable dimensions, given a few simple arguments for subset definition. In addition, instead of retrieving a NetCDF file that needs to be opened and read, the requested data is directly loaded into the current R working session, according to a particular structure described below, prior to data analysis and/or representation. In order to explain the loadSystem4 function, in the next lines we describe an illustrative example considering one-month lead time forecasts of minimum surface temperature for January over a window centered in Europe (0^o^W - 30^o^E and 35^o^S - 65^o^N). A more elaborated example describing a multi-model selection of a similar dataset is presented in the tutorial, which can be downloaded [https://www.meteo.unican.es/trac/meteo/attachment/wiki/SpecsEuporias/DataPortal_Tutorial.pdf here], or in the section Examples. In order to explain the loadSystem4 function, in the next lines we describe an illustrative example considering one-month lead time forecasts of minimum surface temperature for January over a window centered in Europe (0^o^W - 30^o^E and 35^o^S - 65^o^N). A more elaborated example describing a multi-model selection of a similar dataset is presented in the tutorial, which can be downloaded [https://www.meteo.unican.es/trac/meteo/attachment/wiki/SpecsEuporias/DataPortal_Tutorial.pdf here], or in the section [wiki:SpecsEuporias/RPackage/Examples Examples]. The request is simply formulated via the loadSystem4 function in the following way: