PostGIS 1.5.8 Manual - Fedora Project Packages GIT repositories

PostGIS 1.5.8 Manual132 / 310Examples--Rotate a line 90 degrees along z-axisSELECT ST_AsEWKT(ST_RotateZ(ST_GeomFromEWKT(’LINESTRING(1 2 3, 1 1 1)’), pi()/2));st_asewkt---------------------------LINESTRING(-2 1 3,-1 1 1)--Rotate a curved circle around z-axisSELECT ST_AsEWKT(ST_RotateZ(the_geom, pi()/2))FROM (SELECT ST_LineToCurve(ST_Buffer(ST_GeomFromText(’POINT(234 567)’), 3)) As the_geom)As foo;←↪st_asewkt-----------------------------------------------------------------------------------------------------CURVEPOLYGON(CIRCULARSTRING(-567 237,-564.87867965644 236.12132034356,-564234,-569.12132034356 231.87867965644,-567 237))←↪See AlsoST_Affine, ST_RotateX, ST_RotateY, Rotate around Point, Create Ellipse functions7.5.19 ST_ScaleST_Scale — Scales the geometry to a new size by multiplying the ordinates with the parameters. Ie: ST_Scale(geom, Xfactor,Yfactor, Zfactor).Synopsisgeometry ST_Scale(geometry geomA, float XFactor, float YFactor, float ZFactor);geometry ST_Scale(geometry geomA, float XFactor, float YFactor);DescriptionScales the geometry to a new size by multiplying the ordinates with the parameters. Ie: ST_Scale(geom, Xfactor, Yfactor,Zfactor).NoteST_Scale(geomA, XFactor, YFactor, ZFactor) is short-hand for ST_Affine(geomA, XFactor,0, 0, 0, YFactor, 0, 0, 0, ZFactor, 0, 0, 0).NotePrior to 1.3.4, this function crashes if used with geometries that contain CURVES. This is fixed in 1.3.4+Availability: 1.1.0.This function supports 3d and will not drop the z-index.This method supports Circular Strings and Curves