extractOSMPoints: Extract peak position and altitude from OSM data
In gisma/perfectPeak: Calculates the perfect peaks

Description Usage Arguments Details Value Author(s) References Examples

The current OSM data base is cropped for th earea of interest Kmz file of Harry's peak list is downloaded and will be cleaned to derive coordinates altitude and name of all available peaks within a region of interest

1	extractOSMPoints(dem,current.proj4)

`dem`	is a Digital Elevation Model with geographic coordinates
`target.projection`	is a valid proj.4 string containing the correct target crs

Package:	Rpeak
Type:	Package
Version:	0.2
License:	GPL (>= 2)
LazyLoad:	yes

extractOSMPoints returns the following parameters:

xcoord	xcoordinate (mapunits)
ycoord	ycoordinate (mapunits)
altitude	altitude in meter
name	name of the peak

Chris Reudenbach

http://moc.environmentalinformatics-marburg.de/doku.php?id=courses:msc:advanced-gis:description

  
#### Example extract OSM nodes from a region of interst (ROI)
#    create a dataframe containing coordinates, tag-attribute and value
ini.example=system.file("data","demo.ini", package="perfectPeak") 
dem.example=system.file("data","demo.asc", package="perfectPeak")      
ini<-initEnvironGIS(ini.example,dem.example)
extractOSMPoints(ini,key="natural",val="peak",taglist=c('name','ele'))