headPct
The headPct method returns a table with a specific percentage of rows from the beginning of the source table.
caution
Attempting to use headPct on a blink table will raise an error.
Syntax
table.headPct(percent)
Parameters
| Parameter | Type | Description |
|---|---|---|
| percent | double | The percentage of rows to return. This value must be given as a floating-point number between 0 (0%) to 1 (100%). |
Returns
A new table with a specific percentage of rows from the beginning of the source table.
Examples
The following example filters the table to the first 40% and 33.33333333333% of rows.
source = newTable(
stringCol("Letter", "A", "C", "F", "B", "E", "D", "A"),
intCol("Number", NULL_INT, 2, 1, NULL_INT, 4, 5, 3),
stringCol("Color", "red", "blue", "orange", "purple", "yellow", "pink", "blue"),
intCol("Code", 12, 13, 11, NULL_INT, 16, 14, NULL_INT),
)
result = source.headPct(0.40)
result1 = source.headPct(0.3333333333333)
- source
- result
- result1