![]() ![]() meter) of the segment.įor example, if the speed limit is 100 km / h, the cost to traverse aġ0 km long road segment must be calculated as These attribute values are taken as costs of whole segments, notĪs costs to traverse a length unit (e.g. TheĬosts of center nodes are used in the calculation.Ĭosts may be either line lengths, or attributes saved in a database Center nodes must be opened (costs >= 0). ![]() Default: 2 arc_column= name Arc forward/both direction(s) cost column (number) arc_backward_column= name Arc backward direction cost column (number) node_column= name Node cost column (number) turn_layer= string Layer with turntable Relevant only with -t flag Default: 3 turn_cat_layer= string Layer with unique categories used in turntable Relevant only with -t flag Default: 4ĭESCRIPTION v.net.iso splits a network into bands between cost isolines When used with direct OGR access this is the layer name. This number determines which layer to use. Default: 1 arc_type= string Arc type Input feature type Options: line, boundary Default: line,boundary node_layer= string Node layer Vector features can have category values in different layers. Parameters: input= name Name of input vector map Or data source for direct OGR access output= name Name for output vector map method= string Use costs from centers or costs to centers Options: from, to Default: from center_cats= range Category values Categories of centers (points on nodes) to which net will be allocated, layer for this categories is given by nlayer option costs= integer Costs for isolines arc_layer= string Arc layer Vector features can have category values in different layers. ![]()
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