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phidef
2010 May 21
1
GPS finding and mark interesting POI within table with large GPS points collection
...n every row of that #recognized position by label from defined POI vector
GPS$Lat =c(9,2.2,2,3,4,5,6,7,2,9,2.1,10,3.3,0 , 6, 8, 9)
GPS$Lon =c(0,1 ,1,4,4,5,6,7,2,9,1.1,10,4.2,0 , 6, 1, 9)
GPS$time =c(0,1 ,2,3,4,5,6,7,8,9,10 ,11,12 ,13,14,15,16)
# and definition of points of interest:
POIdef$Lat =c( 2 ,3.2)
POIdef$Lon =c( 1.1 ,4 )
POIdef$Lab =c("A" ,"B")
# but if there are two recognitized points in the small time difference,
# (within time window of tw=3)
# there should be choosen only one point from POIdef
#Result expected:
#like in these vectors:
(G...