gnmanalyse¶
Analyses networks
Synopsis¶
gnmanalyse [--help][-q][-quiet][--long-usage]
[dijkstra <start_gfid> <end_gfid> [[-alo NAME=VALUE] ...]]]
[kpaths <start_gfid> <end_gfid> <k> [[-alo NAME=VALUE] ...]]]
[resource [[-alo NAME=VALUE] ...]]]
[-ds <ds_name>][-f <ds_format>][-l <layer_name>]
[[-dsco NAME=VALUE] ...][-lco NAME=VALUE]
<gnm_name>
Description¶
The gnmanalyse program provides analysing capabilities of geographical networks in GDAL. The results of calculations are return in an OGRLayer format or as a console text output if such layer is undefined. All calculations are made considering the blocking state of features.
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dijkstra
<start_gfid> <end_gfid>
¶ Calculates the best path between two points using Dijkstra algorithm from start_gfid point to end_gfid point.
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kpaths
<start_gfid> <end_gfid>
¶ Calculates K shortest paths between two points using Yen's algorithm (which internally uses Dijkstra algorithm for single path calculating) from start_gfid point to end_gfid point.
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resource
¶
Calculates the "resource distribution". The connected components search is performed using breadth-first search and starting from that features which are marked by rules as 'EMITTERS'.
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-d
<ds_name>
¶ The name and path of the dataset to save the layer with resulting paths. Not need to be existed dataset.
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-f
<ds_format>
¶ Define this to set the format of newly created dataset.
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-l
<layer_name>
¶ The name of the resulting layer. If the layer exist already - it will be rewritten.
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<gnm_name>
¶
The network to work with (path and name).
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-dsco
NAME=VALUE
¶ Dataset creation option (format specific)
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-lco
NAME=VALUE
¶ Layer creation option (format specific)
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-alo
NAME=VALUE
¶ Algorithm option (format specific)