text: var nodes = new vis.DataSet([
                               /* {id: a, label: b, ...}, */
  {id: '4608', label: 'B2\n0.7853981633974483', color: '#31b0d5', title: 'Name: B2<br>Alias: null<br>Value: 0.7853981633974483<br>Type: CELL_WITH_FORMULA<br>Id: 4608<br>Formula Expression: Formula String: ATAN2(VALUE, VALUE); Formula Values: ATAN2(1.0, 1.0); Formula Ptg: ; Ptgs:  Index in Ptgs: 0 <br>Source Object Id: com.dataart.spreadsheetanalytics.engine.PoiProxyWorkbook@48f95f96'},
  {id: '4609', label: 'VALUE\n1.0', color: '#31b0d5', title: 'Name: VALUE<br>Alias: null<br>Value: 1.0<br>Type: CONSTANT_VALUE<br>Id: 4609<br>Formula Expression: Formula String: VALUE; Formula Values: 1.0; Formula Ptg: 1.0; Ptgs: VALUE Index in Ptgs: 0 <br>Source Object Id: com.dataart.spreadsheetanalytics.engine.PoiProxyWorkbook@48f95f96'},
  {id: '4610', label: 'VALUE\n1.0', color: '#31b0d5', title: 'Name: VALUE<br>Alias: null<br>Value: 1.0<br>Type: CONSTANT_VALUE<br>Id: 4610<br>Formula Expression: Formula String: VALUE; Formula Values: 1.0; Formula Ptg: 1.0; Ptgs: VALUE Index in Ptgs: 1 <br>Source Object Id: com.dataart.spreadsheetanalytics.engine.PoiProxyWorkbook@48f95f96'},
  {id: '4611', label: 'ATAN2\n0.7853981633974483', color: '#f0ad4e', title: 'Name: ATAN2<br>Alias: null<br>Value: 0.7853981633974483<br>Type: FUNCTION<br>Id: 4611<br>Formula Expression: Formula String: ATAN2(VALUE, VALUE); Formula Values: ATAN2(1.0, 1.0); Formula Ptg: ; Ptgs:  Index in Ptgs: 2 <br>Source Object Id: com.dataart.spreadsheetanalytics.engine.PoiProxyWorkbook@48f95f96'},
  {id: '4612', label: 'B3\n-2.356194490192345', color: '#31b0d5', title: 'Name: B3<br>Alias: null<br>Value: -2.356194490192345<br>Type: CELL_WITH_FORMULA<br>Id: 4612<br>Formula Expression: Formula String: ATAN2(VALUE, VALUE); Formula Values: ATAN2(-1.0, -1.0); Formula Ptg: ; Ptgs:  Index in Ptgs: 0 <br>Source Object Id: com.dataart.spreadsheetanalytics.engine.PoiProxyWorkbook@48f95f96'},
  {id: '4613', label: 'VALUE\n-1.0', color: '#31b0d5', title: 'Name: VALUE<br>Alias: null<br>Value: -1.0<br>Type: CONSTANT_VALUE<br>Id: 4613<br>Formula Expression: Formula String: VALUE; Formula Values: -1.0; Formula Ptg: -1.0; Ptgs: VALUE Index in Ptgs: 0 <br>Source Object Id: com.dataart.spreadsheetanalytics.engine.PoiProxyWorkbook@48f95f96'},
  {id: '4614', label: 'VALUE\n-1.0', color: '#31b0d5', title: 'Name: VALUE<br>Alias: null<br>Value: -1.0<br>Type: CONSTANT_VALUE<br>Id: 4614<br>Formula Expression: Formula String: VALUE; Formula Values: -1.0; Formula Ptg: -1.0; Ptgs: VALUE Index in Ptgs: 1 <br>Source Object Id: com.dataart.spreadsheetanalytics.engine.PoiProxyWorkbook@48f95f96'},
  {id: '4615', label: 'ATAN2\n-2.356194490192345', color: '#f0ad4e', title: 'Name: ATAN2<br>Alias: null<br>Value: -2.356194490192345<br>Type: FUNCTION<br>Id: 4615<br>Formula Expression: Formula String: ATAN2(VALUE, VALUE); Formula Values: ATAN2(-1.0, -1.0); Formula Ptg: ; Ptgs:  Index in Ptgs: 2 <br>Source Object Id: com.dataart.spreadsheetanalytics.engine.PoiProxyWorkbook@48f95f96'}
                              ]);
  
  
  var edges = new vis.DataSet([
                               /* {from: id_a, to: id_b}, */
  {from: '4610', to: '4611'},
  {from: '4614', to: '4615'},
  {from: '4609', to: '4611'},
  {from: '4613', to: '4615'},
  {from: '4611', to: '4608'},
  {from: '4615', to: '4612'}
                              ]);