# extended_jc Gets daily classification of weather types at every grid-point over the map or selected area of interest according to the Jenkison and Collison scheme. ```r extended_jc(mslp, loni, lati, times, gale = FALSE, num_cores = 2) ``` ## Arguments - `mslp`: 3-Dimensional array ([loni,lati,time]) with mean sea level pressure in Pa. - `loni`: Array with longitude values. - `lati`: Array with latitude values. - `times`: Array with the dates used. - `gale`: Logial. If TRUE, the function returns also Gale days. - `num_cores`: Number of cores (2 by default). ## Returns A list with two objects: * A list of eleven matrix of daily frequencies of weather types ("wtypes"). Each matrix is a 3D array [loni,lati,times] and it refers to each weather type (N,NE,E,SE,S,SW,W,A,C and U). * A list of six matrix of daily frequency of airflow indices ("indices"). Each matrix is a 3D array [loni,lati,times] and it refers to each airflow index (W,S,TF,ZW,ZS,Z and D). * A list with the central points for which the classification is applied. ## Examples ```r # Load data data(press) # Get coordinates longitudes <- press$loni latitudes <- press$lati times <- press$dates # Example when the classification is restricted to an area # Select longitudes and latitudes within the European domain: -10W,40E, 40N,70N ilon <- which(longitudes>(-10)&longitudes<40) loni <- longitudes[ilon] ilat <- which(latitudes>40&latitudes<70) lati <- latitudes[ilat] cwtEU <- extended_jc(press$msl[ilon,ilat,], loni, lati, times, gale=FALSE, num_cores=2) ## Not run: # Not run # This is a long running example # Get the classification for the whole map, all longitudes and latitudes cwtGlobal <- extended_jc(press$msl, longitudes, latitudes, times, gale=FALSE, num_cores=2) ## End(Not run) ``` ## References Otero, N., Sillmann, J. & Butler, T. **Assessment of an extended version of the Jenkinson–Collison classification on CMIP5 models over Europe** Climate Dynamics. https://doi.org/10.1007/s00382-017-3705-y ## See Also `classification_jc` `calculate_cwt`

extended_jc function