1NAUTY-PLANARG(1) Nauty Manual NAUTY-PLANARG(1)
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6 nauty-planarg - test graphs for planarity and find embeddings or
7 obstructions
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10 planarg [-v] [-nVq] [-p|-u] [infile [outfile]]
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13 For each input, write to output if planar.
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15 The output file has a header if and only if the input file does.
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17 -v Write non-planar graphs instead of planar graphs
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19 -V Write report on every input
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21 -u Don't write anything, just count
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23 -p Write in planar_code if planar (without -p, same format as
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26 -k Follow each non-planar output with an obstruction in sparse6
27 format (implies -v, incompatible with -p)
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29 -n Suppress checking of the result
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31 -q Suppress auxiliary information
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33 This program permits multiple edges and loops
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37nauty 2.6.12 January 2020 NAUTY-PLANARG(1)