geomfunc.hlp

关系型数据库 Postgresql 6.5.2

.pgaw:Help.f.t insert end \
"Geometric functions\n\n" {title} \
"area(box) " {bold} "
	Returns: float8 
	area of box 

" {} "area(circle) " {bold} "
	Returns: float8 
	area of circle 

" {} "box(box,box) " {bold} "
	Returns: box 
	boxes to intersection box 

" {} "center(box) " {bold} "
	Returns: point 
	center of object 

" {} "center(circle) " {bold} "
	Returns: point 
	center of object 

" {} "diameter(circle) " {bold} "
	Returns: float8 
	diameter of circle 

" {} "height(box) " {bold} "
	Returns: float8 
	vertical size of box 

" {} "isclosed(path) " {bold} "
	Returns: bool 
	a closed path? 

" {} "isopen(path) " {bold} "
	Returns: bool 
	an open path? 

" {} "length(lseg) " {bold} "
	Returns: float8 
	length of line segment 

" {} "length(path) " {bold} "
	Returns: float8 
	length of path 

" {} "pclose(path) " {bold} "
	Returns: path 
	convert path to closed 

" {} "point(lseg,lseg) " {bold} "
	Returns: point 
	intersection 

" {} "points(path) " {bold} "
	Returns: int4 
	number of points 

" {} "popen(path) " {bold} "
	Returns: path 
	convert path to open 

" {} "radius(circle) " {bold} "
	Returns: float8 
	radius of circle 

" {} "width(box) " {bold} "
	Returns: float8 
	horizontal size 

" {} \
"PostgreSQL functions\n" {link pgfunctions} \
"Next - IP V4 functions" {link ipv4func}