head_pct
The head_pct method returns a table with a specific percentage of rows from the beginning of the source table.
Syntax
table.head_pct(pct=percent_of_rows)
Parameters
| Parameter | Type | Description |
|---|---|---|
| percent_of_rows | 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.
from deephaven import new_table
from deephaven.column import string_col, int_col, double_col
from deephaven.constants import NULL_INT
source = new_table([
string_col("Letter", ["A", "C", "F", "B", "E", "D", "A"]),
int_col("Number", [NULL_INT, 2, 1, NULL_INT, 4, 5, 3]),
string_col("Color", ["red", "blue", "orange", "purple", "yellow", "pink", "blue"]),
int_col("Code", [12, 14, 11, NULL_INT, 16, 14, NULL_INT]),
])
result = source.head_pct(pct=0.40)
- source
- result