defDataAdd | R Documentation |
Add single row to definitions table that will be used to add data to an existing data.table
defDataAdd(
dtDefs = NULL,
varname,
formula,
variance = 0,
dist = "normal",
link = "identity"
)
dtDefs |
Name of definition table to be modified. Null if this is a new definition. |
varname |
Name (string) of new variable |
formula |
An R expression for mean (string) |
variance |
Number |
dist |
Distribution. For possibilities, see details |
link |
The link function for the mean, see details |
A data.table named dtName that is an updated data definitions table
[distributions]
# New data set
def <- defData(varname = "xNr", dist = "nonrandom", formula = 7, id = "idnum")
def <- defData(def, varname = "xUni", dist = "uniform", formula = "10;20")
dt <- genData(10, def)
# Add columns to dt
def2 <- defDataAdd(varname = "y1", formula = 10, variance = 3)
def2 <- defDataAdd(def2, varname = "y2", formula = .5, dist = "binary")
def2
dt <- addColumns(def2, dt)
dt
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