Generate random samples from a chi-squared distribution
R/sdf_stat.R
sdf_rchisq
Description
Generator method for creating a single-column Spark dataframes comprised of i.i.d. samples from a chi-squared distribution.
Usage
sdf_rchisq(sc, n, df, num_partitions = NULL, seed = NULL, output_col = "x") Arguments
| Arguments | Description |
|---|---|
| sc | A Spark connection. |
| n | Sample Size (default: 1000). |
| df | Degrees of freedom (non-negative, but can be non-integer). |
| num_partitions | Number of partitions in the resulting Spark dataframe (default: default parallelism of the Spark cluster). |
| seed | Random seed (default: a random long integer). |
| output_col | Name of the output column containing sample values (default: “x”). |
See Also
Other Spark statistical routines: sdf_rbeta(), sdf_rbinom(), sdf_rcauchy(), sdf_rexp(), sdf_rgamma(), sdf_rgeom(), sdf_rhyper(), sdf_rlnorm(), sdf_rnorm(), sdf_rpois(), sdf_rt(), sdf_runif(), sdf_rweibull()