Class ShiftedByOneArcListASCIIGraph

  • All Implemented Interfaces:
    it.unimi.dsi.lang.FlyweightPrototype<ImmutableGraph>

    public final class ShiftedByOneArcListASCIIGraph
    extends ArcListASCIIGraph
    An ArcListASCIIGraph with fixed shift -1. Very useful to read graphs specified as pairs of arcs with node numbering starting from one.

    Using ArcListASCIIGraph with MatLab-like sparse matrix files

    The main intended usage of this class is that of interfacing easily with MatLab-like sparse matrix files. Note that for this to happen it is necessary to shift by one all indices. Assume you have a file named example.arcs:

      1 2
      2 3
      3 2
      
    Then, the command
      java it.unimi.dsi.webgraph.BVGraph -1 -g ShiftedByOneArcListASCIIGraph dummy bvexample <example.arcs
      
    will generate a BVGraph as expected (e.g, there is an arc from 0 to 1).
    • Constructor Detail

      • ShiftedByOneArcListASCIIGraph

        protected ShiftedByOneArcListASCIIGraph​(java.io.InputStream is,
                                                int shift)
                                         throws java.lang.NumberFormatException,
                                                java.io.IOException
        Throws:
        java.lang.NumberFormatException
        java.io.IOException
    • Method Detail

      • loadSequential

        @Deprecated
        public static ImmutableGraph loadSequential​(java.lang.CharSequence basename)
                                             throws java.io.IOException
        Deprecated.
        Throws:
        java.io.IOException
      • loadSequential

        @Deprecated
        public static ImmutableGraph loadSequential​(java.lang.CharSequence basename,
                                                    it.unimi.dsi.logging.ProgressLogger unused)
                                             throws java.io.IOException
        Deprecated.
        Throws:
        java.io.IOException
      • loadOffline

        public static ImmutableGraph loadOffline​(java.lang.CharSequence basename)
                                          throws java.io.IOException
        Throws:
        java.io.IOException
      • loadOffline

        public static ImmutableGraph loadOffline​(java.lang.CharSequence basename,
                                                 it.unimi.dsi.logging.ProgressLogger unused)
                                          throws java.io.IOException
        Throws:
        java.io.IOException
      • loadMapped

        public static ImmutableGraph loadMapped​(java.lang.CharSequence basename)
                                         throws java.io.IOException
        Throws:
        java.io.IOException
      • loadMapped

        public static ImmutableGraph loadMapped​(java.lang.CharSequence basename,
                                                it.unimi.dsi.logging.ProgressLogger unused)
                                         throws java.io.IOException
        Throws:
        java.io.IOException
      • loadOnce

        public static ArcListASCIIGraph loadOnce​(java.io.InputStream is)
                                          throws java.io.IOException
        Throws:
        java.io.IOException
      • load

        public static ImmutableGraph load​(java.lang.CharSequence basename)
                                   throws java.io.IOException
        Throws:
        java.io.IOException
      • load

        public static ImmutableGraph load​(java.lang.CharSequence basename,
                                          it.unimi.dsi.logging.ProgressLogger unused)
                                   throws java.io.IOException
        Throws:
        java.io.IOException
      • store

        public static void store​(ImmutableGraph graph,
                                 java.lang.CharSequence basename,
                                 it.unimi.dsi.logging.ProgressLogger unused)
                          throws java.io.IOException
        Throws:
        java.io.IOException
      • main

        public static void main​(java.lang.String[] arg)
                         throws java.lang.NoSuchMethodException
        Throws:
        java.lang.NoSuchMethodException