EDGE_LIST contains one edge per line. The following example
a,b b,crepresents a graph with two edges: a->b and b->c.
ADJACENCY_LIST contains the adjacency list of each vertex per line. The first
field on a line is a vertex while the remaining fields are its neighbors.
a,b b,c,d c,a,c,drepresents a graph with edges: a->b, b->c, b->d, c->a, c->c, c->d.
a,b b,a d,a c,a,b b,d,awhich represents a graph with edges: a->b, b->a, d->a, c->a, c->b, b->d, b->a. Multiple occurrences of the same edge result into a multi-graph.
MATRIX outputs an adjacency matrix representation of the graph. Each line
represents a vertex.
0,1,0,1,0 1,0,0,0,0 0,0,1,0,0 0,1,0,1,0 0,0,0,0,0represents a graph with five vertices 1,2,3,4,5 which contains edges: 1->2, 1->4, 2->1, 3->3, 4->2, 4->4.
CSVFormat.Parameter.MATRIX_FORMAT_ZERO_WHEN_NO_EDGE is not set the equivalent
format would be:
,1,,1, 1,,,, ,,1,, ,1,,1, ,,,,
Weighted variants are also valid if
set. The above example would then be:
,1.0,,1.0, 1.0,,,, ,,1.0,, ,1.0,,1.0, ,,,,If additionally
CSVFormat.Parameter.MATRIX_FORMAT_ZERO_WHEN_NO_EDGEis set then a zero as an integer means that the corresponding edge is missing, while a zero as a double means than the edge exists and has zero weight.
CSVFormat.Parameter.MATRIX_FORMAT_NODEID is set then node identifiers are
also included as in the following example:
,a,b,c,d,e a,,1,,1, b,1,,,, c,,,1,, d,,1,,1, e,,,,,In the above example the first line contains the node identifiers and the first field of each line contain the vertex it corresponds to. In case node identifiers are present line-shuffled input is also valid such as:
,a,b,c,d,e c,,,1,, b,1,,,, e,,,,, d,,1,,1, a,,1,,1,The last example represents the graph with edges: a->b, a->d, b->a, c->c, d->b, d->d.
|Modifier and Type||Class and Description|
Parameters that affect the behavior of CVS importers/exporters.
|Enum Constant and Description|
|Modifier and Type||Method and Description|
Returns the enum constant of this type with the specified name.
Returns an array containing the constants of this enum type, in the order they are declared.
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf
public static final CSVFormat EDGE_LIST
public static final CSVFormat ADJACENCY_LIST
public static final CSVFormat MATRIX
public static CSVFormat values()
for (CSVFormat c : CSVFormat.values()) System.out.println(c);
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