gProject | R Documentation |

Return distances along geometry to points nearest the specified points.

```
gProject(spgeom, sppoint, normalized = FALSE)
```

`spgeom` |
SpatialLines or SpatialLinesDataFrame object |

`sppoint` |
SpatialPoints or SpatialPointsDataFrame object |

`normalized` |
Logical determining if normalized distances should be used |

If `normalized=TRUE`

, distances normalized to the length
of the geometry are returned, i.e., values between 0 and 1.

a numeric vector containing the distances along the line to points nearest to the specified points

Rainer Stuetz

gInterpolate

```
l <- readWKT("LINESTRING(0 1, 3 4, 5 6)")
p1 <- readWKT("MULTIPOINT(3 2, 3 5)")
frac <- gProject(l, p1)
p2 <- gInterpolate(l, frac)
plot(l, axes=TRUE)
plot(p1, col = "blue", add = TRUE)
plot(p2, col = "red", add = TRUE)
```

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