Plot the covariance

Visualize balance of the covariance of variables between treatment and control groups. Balance plot reflects balance in standardized units.

Usage

plot_covariance(.data, treatment, confounders)

Arguments

.data

dataframe

treatment

the column denoted treatment. Must be binary.

confounders

character list of column names denoting the X columns of interest

Value

ggplot object

Author

George Perrett

Examples

data(lalonde)
plot_covariance(lalonde, 'treat', c('re75','re74' , 'age', 'educ')) + labs(title = 'My new title')
#> Registered S3 method overwritten by 'GGally':
#>   method from   
#>   +.gg   ggplot2
#> Warning: `stat_contour()`: Zero contours were generated
#> Warning: no non-missing arguments to min; returning Inf
#> Warning: no non-missing arguments to max; returning -Inf
#> Warning: `stat_contour()`: Zero contours were generated
#> Warning: no non-missing arguments to min; returning Inf
#> Warning: no non-missing arguments to max; returning -Inf
#> Warning: `stat_contour()`: Zero contours were generated
#> Warning: no non-missing arguments to min; returning Inf
#> Warning: no non-missing arguments to max; returning -Inf