[GRASS-dev] [GRASS GIS] #1627: Vector analysis tool that outputs corssing points of two dataset line or line/boundary cross points

GRASS GIS trac at osgeo.org
Sun Mar 25 04:54:36 EDT 2012


#1627: Vector analysis tool that outputs corssing points of two dataset line or
line/boundary cross points
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 Reporter:  marisn       |       Owner:  grass-dev@…              
     Type:  enhancement  |      Status:  new                      
 Priority:  normal       |   Milestone:  7.0.0                    
Component:  Vector       |     Version:  unspecified              
 Keywords:               |    Platform:  Unspecified              
      Cpu:  Unspecified  |  
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 v.crosspoints module should take as an input two vector datasets and
 output a new vector data set containing points only at line and/or
 line/boundary crossing points.

 Attribute data should be copied form the source datasets in to separate
 layers. Module should provide an option to skip attribute data transfer
 and just move CAT values.

 Bonus feature (has to be discussed) - ability to store the distance from
 the line start point to the crossing point.

 Problems - a design decision needed - what to do if there are more than
 single line crossing at the same point. Creating a geometry is easy, still
 how should attribute data be handled in such case?


 Currently it is possible to obtain two line dataset crossing points by
 working around like it's described in this e-mail thread.

 http://lists.osgeo.org/pipermail/grass-user/2012-March/064062.html

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Ticket URL: <http://trac.osgeo.org/grass/ticket/1627>
GRASS GIS <http://grass.osgeo.org>



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