Transforms a pcpatch object to a new schema and returns the result as a new pcpatch object.
Syntax
pcpatch ST_transform(pcpatch pc, integer pcid, float8 def default 0.0);Parameters
| Parameter | Description |
|---|---|
pc | The pcpatch object to transform. |
pcid | The ID of the target schema. The ID comes from the pointcloud_formats table. |
def | The default value assigned to attribute dimensions that exist in the target schema but not in the source schema. Default: 0.0. |
Description
ST_transform re-interprets the point data according to the target schema's dimension definitions — including any differences in scale or offset — and returns a new pcpatch object with values recalculated accordingly.
This differs from ST_setPcid, which only reassigns the schema ID without reinterpreting the underlying values.
Example
update patches set pa=ST_transform(pa, 2, 0.0);Output:
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