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Reference
61
clients. The change is persisted.
Default is 0.
Persistent changes (2 and 3) are stored in the file linkclose.txt.
See also GetOpenStatus
66
Possible error codes: -10 -30 -43
Versions: Standard Pro
ActiveX / VCL / CLX component: RW_NetMGMT
4.9
Coordinate2Location
Function Coordinate2Location(const XLongV,YLatV: double; var
link: integer; var percent: double; var side: integer; var
dist,XLongNew,YLatNew: double): integer;
Finds the nearest location based on a set of coordinates. A location is a position along
a link. This is described as a percentage (0 <= percent <= 1) along the link ID.
The side of the link is also returned in relation to direction of digitization: Right (0) or
Left (1).
The air distance and coordinates of the location is returned in dist and XLongNew &
YLatNew.
You will get error -30 if you supply a set of lat/long values not within valid range, i.e.
-90..90 and -180..180.
There is quite some calculation work involved in this function, so you should consider
to cache the results (store the location in an array/database), if the same coordinates
are otherwise supplied over and over. This can have a significant impact on total
calculation time.
Typical errors when using this function is using (0,0) as input or swapping
coordinates. Both will slow down the calculations and return wrong results.
See also Location2Coordinate
75 ,
Coordinate2LocationSimple
61 .
Possible error codes: -10 -30 -40 -43 -44 -46 -62
Versions: Standard Pro
ActiveX / VCL / CLX component: RWnetBase
4.10
Coordinate2LocationSimple
Function Coordinate2LocationSimple(const XLongV,YLatV:
double; var link: integer; var percent: double): integer;
Same as Coordinate2Location 61 , just with fewer parameters returned. Percentage is
also returned as 0 < percent < 1.
© 2014 RouteWare / Uffe Kousgaard