change GB field calculate method.

OTSCPP/OTSRptCalculate/GBCal/CGBCalculate.cpp

@@ -896,8 +896,8 @@ namespace OTSGBCalculate
 		double totalHeight = pointTopleft.y - pointBottomright.y;
 
 
-		int nPossibleGBFieldRowNum = totalHeight /GB_FIELD_WIDTH+0.5;//可能有的国标field行数
-		int nPossibleGBFieldColNum = totalWidth / GB_FIELD_WIDTH+0.5;//列数
+		int nPossibleGBFieldRowNum = totalHeight / GB_FIELD_WIDTH;// +0.5;//可能有的国标field行数
+		int nPossibleGBFieldColNum = totalWidth / GB_FIELD_WIDTH;// +0.5;//列数
 
 
 		//get possible OTSFields