Dear All,

   I want to ask how to use graph to define the lattice. I write a graph file named as “a.xml”. In the parameter file, I use: GRAPH="C:\alpsproject\lattice\a.xml"; .

The a.xml file is as the following. However the output is “could not find”. I want to ask how to use it. Thank you very much.

Sincerely,

Huaiming Guo

<GRAPH dimension="2" vertices="8" edges="12">

  <VERTEX id="1" type="0"><COORDINATE>0 0</COORDINATE></VERTEX>

  <VERTEX id="2" type="0"><COORDINATE>0 1</COORDINATE></VERTEX>

  <VERTEX id="3" type="0"><COORDINATE>1 0</COORDINATE></VERTEX>

  <VERTEX id="4" type="0"><COORDINATE>1 1</COORDINATE></VERTEX>

  <VERTEX id="5" type="0"><COORDINATE>2 0</COORDINATE></VERTEX>

  <VERTEX id="6" type="0"><COORDINATE>2 1</COORDINATE></VERTEX>

  <VERTEX id="7" type="0"><COORDINATE>3 0</COORDINATE></VERTEX>

  <VERTEX id="8" type="0"><COORDINATE>3 1</COORDINATE></VERTEX>

  <EDGE source="1" target="3" id="1" type="0" vector="1 0"/>

  <EDGE source="1" target="2" id="2" type="1" vector="0 1"/>

  <EDGE source="2" target="4" id="3" type="0" vector="1 0"/>

  <EDGE source="3" target="5" id="4" type="0" vector="1 0"/>

  <EDGE source="3" target="4" id="5" type="1" vector="0 1"/>

  <EDGE source="4" target="6" id="6" type="0" vector="1 0"/>

  <EDGE source="5" target="7" id="7" type="0" vector="1 0"/>

  <EDGE source="5" target="6" id="8" type="1" vector="0 1"/>

  <EDGE source="6" target="8" id="9" type="0" vector="1 0"/>

  <EDGE source="7" target="1" id="10" type="0" vector="1 0"/>

  <EDGE source="7" target="8" id="11" type="1" vector="0 1"/>

  <EDGE source="8" target="2" id="12" type="0" vector="1 0"/>

</GRAPH>