This produces loess
smoothed estimates of y
with Student confidence intervals.
Usage
get_smooths(df, x, y, groups = NULL, level = 0.95)
Arguments
- df
(data.frame
)
data set containing all analysis variables.
- x
(string
)
x column name.
- y
(string
)
y column name.
- groups
(character
or NULL
)
vector with optional grouping variables names.
- level
(proportion
)
level of confidence interval to use (0.95 by default).
Value
A data.frame
with original x
, smoothed y
, ylow
, and yhigh
, and
optional groups
variables formatted as factor
type.