Accés restringit als usuaris de la URL (Blanquerna, Fac. Pere Tarrés). Sol·liciteu claus d’accés al personal bibliotecari

Accés restringit als usuaris de la URL (Blanquerna, Fac. Pere Tarrés). Sol·liciteu claus d’accés al personal bibliotecari

Tabla de Contenidos: “…. -- There's more... -- Handling different column delimiters -- Handling column headers/variable names -- Handling missing values -- Reading strings as characters and not as factors -- Reading data directly from a website -- Reading XML data -- Getting ready -- How to do it... -- How it works... -- There's more... -- Extracting HTML table data from a web page -- Extracting a single HTML table from a web page -- Reading JSON data -- Getting ready -- How to do it... -- How it works... -- Reading data from fixed-width formatted files -- Getting ready -- How to do it... -- How it works... -- There's more... -- Files with headers -- Excluding columns from data -- Reading data from R files and R libraries -- Getting ready -- How to do it... -- How it works... -- There's more... -- Saving all objects in a session -- Saving objects selectively in a session -- Attaching/detaching R data files to an environment -- Listing all datasets in loaded packages -- Removing cases with missing values -- Getting ready -- How to do it... -- How it works... -- There's more... -- Eliminating cases with NA for selected variables -- Finding cases that have no missing values -- Converting specific values to NA -- Excluding NA values from computations -- Replacing missing values with the mean -- Getting ready -- How to do it... -- How it works... -- There's more... -- Imputing random values sampled from non-missing values -- Removing duplicate cases -- Getting ready -- How to do it... -- How it works... -- There's more…”

Materias: “…Vázquez de Mella y Fanjul, Juan, 1861-1928…”