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MultiLineString
Functions
GLength(mls)
MultiLineString
value mls
. The length of
mls
is equal to the sum of the lengths of its elements.
mysql> SELECT GLength(GeomFromText('MultiLineString((1 1,2 2,3 3),(4 4,5 5))')); +-------------------------------------------------------------------+ | GLength(GeomFromText('MultiLineString((1 1,2 2,3 3),(4 4,5 5))')) | +-------------------------------------------------------------------+ | 4.2426406871193 | +-------------------------------------------------------------------+ |
IsClosed(mls)
MultiLineString
value mls
is closed
(that is, the StartPoint()
and EndPoint()
values are the same
for each LineString
in mls
).
Returns 0 if mls
is not closed, and -1 if it is NULL
.
mysql> SELECT IsClosed(GeomFromText('MultiLineString((1 1,2 2,3 3),(4 4,5 5))')); +--------------------------------------------------------------------+ | IsClosed(GeomFromText('MultiLineString((1 1,2 2,3 3),(4 4,5 5))')) | +--------------------------------------------------------------------+ | 0 | +--------------------------------------------------------------------+ |