Read external csv data set definitions for adding columns
defReadCond(filen)String file name, including full path. Must be a csv file.
A data.table with data set definitions
[distributions]
# Create temporary external "csv" files
test1 <- c(
"varname,formula,variance,dist,link",
"x,0.3;0.4;0.3,0,categorical,identity"
)
tfcsv1 <- tempfile()
writeLines(test1, tfcsv1)
test2 <- c(
"condition,formula,variance,dist,link",
"x == 1, 0.4,0,binary,identity",
"x == 2, 0.6,0,binary,identity",
"x >= 3, 0.8,0,binary,identity"
)
tfcsv2 <- tempfile()
writeLines(test2, tfcsv2)
# Generate data based on external definitions
defs <- defRead(tfcsv1)
dt <- genData(2000, defs)
dt
#> id x
#> 1: 1 1
#> 2: 2 2
#> 3: 3 1
#> 4: 4 3
#> 5: 5 2
#> ---
#> 1996: 1996 2
#> 1997: 1997 2
#> 1998: 1998 1
#> 1999: 1999 3
#> 2000: 2000 1
# Add column based on
defsCond <- defReadCond(tfcsv2)
dt <- addCondition(defsCond, dt, "y")
dt
#> id y x
#> 1: 1 1 1
#> 2: 2 0 2
#> 3: 3 0 1
#> 4: 4 0 3
#> 5: 5 0 2
#> ---
#> 1996: 1996 0 2
#> 1997: 1997 1 2
#> 1998: 1998 0 1
#> 1999: 1999 1 3
#> 2000: 2000 1 1
dt[, mean(y), keyby = x]
#> x V1
#> 1: 1 0.3982143
#> 2: 2 0.6072727
#> 3: 3 0.8243902
unlink(tfcsv1)
unlink(tfcsv2)