# Regular expression for validating filename

*22-Aug-2017 15:47*

The implicit default setting corresponds to a point every will return a POLYGON approximating the Circular Sector defined by cx, cy and radius; the arc's extremities will be defined by start, stop angles expressed in degrees.

The implicit default setting corresponds to a point every Make Elliptic Sector( cx Double precision , cy Double precision , x_axis Double precision , y_axis Double precision , start Double precision , stop Double precision [ , SRID Integer [ , step Double precision ] ] ) : Geometrywill return a POLYGON approximating the Elliptic Sector defined by cx, cy and x_axis, y_axis; the arc's extremities will be defined by start, stop angles expressed in degrees.

Passing any negative precision will automatically restore the initial default setting.

The spatialite_gui tool will honor this setting for all floating point values to be displayed on the screen.

The implicit default setting corresponds to a point every will return a closed LINESTRING approximating the Ellipse defined by cx, cy and x_axis, y_axis.

The optional argument step if specified defines how many points will be interpolated on the ellipse; a point will be set every step degrees.

Usually distances are expressed in the length unit corresponding to the geoms own SRID: but if both geoms are simple POINTs and their SRID is 4326 (i.e. In this later case the optional arg use_spheroid can be used to select the distance algorithm to be used: is use_spheroid = 1 the slowest but most accurate geodesic distance will be evaluated: in any other case the simplest great circle distance will be used insteadreturn a geometric object representing the corresponding left-sided (positive radius) or right-sided (negative radius) offset curve NULL is returned whenever is not possible deriving an offset curve from the original geometry [a single not-closed LINESTRING is expected as input]return a geometric object representing the corresponding left- (or right-sided) single-sided buffer NULL is returned whenever is not possible deriving a single-sided buffer from the original geometry [a single not-closed LINESTRING is expected as input]return a set of equidistant points interpolated along a line; the returned geometry always corresponds to a MULTIPOINT supporting the M coordinate (representing the progressive distance for each interpolated Point).

Second argument represents the regular distance between interpolated points.

Enables the Geopackage mode all connections initially start by disabling the GPKG mode, that has always to be explicitly enabled whenever reguired.

returns the intput value possibly casted to the Text data-type: NULL if no conversion is possible.

If an optional argument zero_pad is passed and the input value is of the Integer or Double type, then the returned string will be padded using as much trailing ZEROs so to ensure the required length.returns the intput value possibly casted to the BLOB data-type: if the optional argument hex_input is set to TRUE the input value will be expected to correspond to an Hexa Decimal string, e.g.

The returned Geometry will usually be of the Multi Polygon type (a collection of Squares), but will be a Multi Linestring if the optional edges_only argument is set to TRUE If the optional origin argument (expected to be a Point) is not specified then the (0,0) grid origin will be assumed by default.return the length of c (measured in meters).

If the use_ellipsoid argument is set to TRUE the precise (but slower) length will be computed on the Ellipsoid, otherwise will be computed on the Great Cicle (approximative, but faster).return the perimeter of s (measured in meters).The returned Geometry will usually be of the Multi Polygon type (a collection of Squares), but will be a Multi Linestring if the optional edges_only argument is set to TRUE If the optional origin argument (expected to be a Point) is not specified then the (0,0) grid origin will be assumed by default.return a grid of triangular cells (having the edge length of size) precisely covering the input Geometry.