headPct
The headPct method returns a table with a specific percentage of rows from the beginning of the source table.
Syntax#
table.headPct(percentOfRows)Parameters#
| Parameter | Type | Description |
|---|---|---|
| percentOfRows | double | The percentage of rows to return as a value from 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% of rows.
- Python
- Groovy
from deephaven.TableTools import newTable, stringCol, intCol, doubleColfrom deephaven.conversion_utils import NULL_INT
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)- source
- result
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)- source
- result