This topic describes the ST_GridLevelAsZ function. This function converts the height of a geographic grid into an altitude.
Syntax
bigint ST_GridLevelAsZ(integer gridlevel, integer precision);Parameters
Parameter | Description |
gridlevel | The height of the geographic grid. |
precision | The precision level of the geographic grid. Valid values: 1 to 32. |
Description
This function calculates the altitude of the geographic grid from the bottom of the grid based on the height and precision level of the grid.
Examples
SELECT ST_GridLevelAsZ(1, 15);
st_gridlevelasz
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