Name
ST_Affine, st_affine — performs standard 2d affine transformation
Synopsis
ST_Affine(
|
in XXa any, |
| in XYb any, | |
| in YYe any, | |
| in Xoff any, | |
in Yoff any); |
Description
performs standard 2d affine transformation with matrix:
XXa XXb 0
YXd YYe 0
0 0 0
and shift (Xoff, Yoff, 0)
Parameters
XXa
matrix a
XYb
matrix b
YYe
matrix e
Xoff
x
Yoff
y
Return Types
Returns any.
Examples
Example 24.144. Simple Use
select st_affine (st_ewkt_read ('POLYGON((1 3,2 4,1 5,0 4,1 3),
(1 3.5,1.5 4,1 4.5,0.5 4,1 3.5))'),
30, 3, 1, 0.3, 0.001, 0.002)
VARCHAR NOT NULL
_______________________________________________________________________________
POLYGON((39.001000 1.902000,
72.001000 3.202000,
45.001000 2.502000,
12.001000 1.202000,
39.001000 1.902000),
(40.501000 2.052000,
57.001000 2.702000,
43.501000 2.352000,
27.001000 1.702000,
40.501000 2.052000))