DataFrameStat

Statistical and approximate-query operations on a DataFrame.

Obtained via DataFrame.stat. Mirrors DataFrameStatFunctions in the JVM Spark API.

Example

const c = await df.stat.corr("height", "weight");
const quantiles = await df.stat.approxQuantile("latency", [0.5, 0.95, 0.99], 0.01);

approxQuantile(
   cols,
   probabilities,
   relativeError): DataFrame;

Compute approximate quantiles for numerical columns.

corr(
   col1,
   col2,
   method?): DataFrame;

Compute Pearson correlation between two columns.

cov(col1, col2): DataFrame;

Compute sample covariance between two columns.

Parameter	Type
`col1`	`string`
`col2`	`string`

crosstab(col1, col2): DataFrame;

Compute a pair-wise frequency table (contingency table).

Parameter	Type
`col1`	`string`
`col2`	`string`

freqItems(cols, support?): DataFrame;

Find frequent items in the given columns.

Parameter	Type
`cols`	`string`[]
`support?`	`number`