<GRAPH name="anisotropic open ladder graph test">
<!-- type="0" means horizontal; type="1" means vertical -->
<EDGE tyep="0" source="1" target="2"/>
<EDGE tyep="0" source="2" target="3"/>
<EDGE tyep="0" source="3" target="4"/>
<EDGE tyep="0" source="4" target="5"/>
<EDGE tyep="0" source="6" target="7"/>
<EDGE tyep="0" source="7" target="8"/>
<EDGE tyep="0" source="8" target="9"/>
<EDGE tyep="0" source="9" target="10"/>
<EDGE tyep="1" source="1" target="6"/>
<EDGE tyep="1" source="2" target="7"/>
<EDGE tyep="1" source="3" target="8"/>
<EDGE tyep="1" source="4" target="9"/>
<EDGE tyep="1" source="5" target="10"/>
</GRAPH>
*************************************************************************************************
On the other hand, I use the default LATTICEGRAPH "open ladder", I copy here:
*************************************************************************************************
<LATTICE name="square lattice" dimension="2">
<PARAMETER name="a" default="1"/>
<BASIS><VECTOR>a 0</VECTOR><VECTOR>0 a</VECTOR></BASIS>
<RECIPROCALBASIS><VECTOR>2*pi/a 0</VECTOR><VECTOR>0 2*pi/a</VECTOR></RECIPROCALBASIS>
</LATTICE>
<UNITCELL name="anisotropic2d" dimension="2">
<VERTEX/>
<EDGE type="0"><SOURCE vertex="1" offset="0 0"/><TARGET vertex="1" offset="1 0"/></EDGE>
<EDGE type="1"><SOURCE vertex="1" offset="0 0"/><TARGET vertex="1" offset="0 1"/></EDGE>
</UNITCELL>
<LATTICEGRAPH name = "open ladder" vt_name="OpenLadderLattice">
<FINITELATTICE>
<LATTICE ref="square lattice"/>
<PARAMETER name="W" default="2"/>
<EXTENT dimension="1" size="L"/>
<EXTENT dimension="2" size="W"/>
<BOUNDARY dimension="1" type="open"/>
<BOUNDARY dimension="2" type="open"/>
</FINITELATTICE>
<UNITCELL ref="anisotropic2d"/>
</LATTICEGRAPH>
*************************************************************************************************
with parameters L=2, W=5. Will they be treated as the same in ALPS? Or the graph equals as L=5,W=2 open ladder?