private void getFloorPlanWS(String line, CellDescription cellDescription) {
      int startIndex;
      /*get wall sensors*/
      direction n = direction.NORTH;
      direction e = direction.EAST;
      direction s = direction.SOUTH;
      direction w = direction.WEST;
      startIndex = line.indexOf("ps") + 4;
      switch (line.substring(startIndex, startIndex + 1)) {
         case "1":
            cellDescription.sI.features[e.index()] = SensorInterface.feature.OPEN;
            break;
         case "2":
            cellDescription.sI.features[e.index()] = SensorInterface.feature.OBSTICLE;
            break;
         default:
            cellDescription.sI.features[e.index()] = SensorInterface.feature.STAIRS;
            break;
      }
      startIndex++;
      switch (line.substring(startIndex, startIndex + 1)) {
         case "1":
            cellDescription.sI.features[w.index()] = SensorInterface.feature.OPEN;
            break;
         case "2":
            cellDescription.sI.features[w.index()] = SensorInterface.feature.OBSTICLE;
            break;
         default:
            cellDescription.sI.features[w.index()] = SensorInterface.feature.STAIRS;
            break;
      }
      startIndex++;
      switch (line.substring(startIndex, startIndex + 1)) {
         case "1":
            cellDescription.sI.features[n.index()] = SensorInterface.feature.OPEN;
            break;
         case "2":
            cellDescription.sI.features[n.index()] = SensorInterface.feature.OBSTICLE;
            break;
         default:
            cellDescription.sI.features[n.index()] = SensorInterface.feature.STAIRS;
            break;
      }
      startIndex++;
      switch (line.substring(startIndex, startIndex + 1)) {
         case "1":
            cellDescription.sI.features[s.index()] = SensorInterface.feature.OPEN;
            break;
         case "2":
            cellDescription.sI.features[s.index()] = SensorInterface.feature.OBSTICLE;
            break;
         default:
            cellDescription.sI.features[s.index()] = SensorInterface.feature.STAIRS;
            break;
      }
   }