FUNCTION fHtmCoverRegionError

Returns an error message describing what is wrong with @region.

Regions have the syntax
circleSpec => CIRCLE J2000 ra dec radArcMin
| CIRCLE CARTESIAN x y z radArcMin
rectSpec => RECT J2000 {ra dec }2
| RECT CARTESIAN {x y z }2
polySpec => POLY J2000 {ra dec }3+
| POLY CARTESIAN {x y z }3+
hullSpec => CHULL J2000 {ra dec }3+
| CHULL CARTESIAN {x y z }3+
convexSpec => CONVEX { x y z D}*
coverSpec => circleSpec | rectSpec | polySpec | hullSpec | convexSpec
regionSpec => REGION {coverSpec}* | coverspec
for the circle the REGION prefix is optional.

Returns: OK, or string giving the above syntax if the region description is in error.
select dbo.fHtmRegionError('CIRCLE LATLON 190')
see also fHtmCoverRegion

Input and output parameters

name type length inout pnum

nvarchar -1 input 0

@region nvarchar -1 input 1

sysname -1 input 0

@region sysname -1 input 1

name	type	length	inout	pnum
	nvarchar	-1	input	0
@region	nvarchar	-1	input	1
	sysname	-1	input	0
@region	sysname	-1	input	1