This topic describes the ST_GridLevelFromZ function. This function calculates the height of a geographic grid based on the altitude.
Syntax
bigint ST_GridLevelFromZ(float altitude, integer precision);Parameters
Parameter | Description |
altitude | The altitude in meters. |
precision | The precision level of the geographic grid. Valid values: 1 to 32. |
Description
This function calculates the height of the geographic grid based on the altitude and precision level of the grid.
Examples
SELECT ST_GridLevelFromZ(1005.8, 25);
st_gridlevelfromz
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