diff --git a/lib/mesh/regular_grid.cpp b/lib/mesh/regular_grid.cpp
index c9bbc97..d482a53 100644
--- a/lib/mesh/regular_grid.cpp
+++ b/lib/mesh/regular_grid.cpp
@@ -192,6 +192,7 @@ int gctl::regular_grid::view(std::string datname)
 {
 	meshdata &data = get_data(datname);
 
+	mathgl_dens plt; ///< mathgl绘图对象
 	plt.range(rg_xmin, rg_xmin + (rg_xnum - 1)*rg_dx, rg_ymin, rg_ymin + (rg_ynum - 1)*rg_dy);
 	plt.demension(rg_xnum, rg_ynum);
 	plt.add_dens(data.datval_, datname);
@@ -211,8 +212,9 @@ int gctl::regular_grid::view(std::string datname)
 
 void gctl::regular_grid::plot(std::string datname)
 {
-	meshdata data = get_data(datname);
+	meshdata &data = get_data(datname);
 
+	gmt_JX_single pic;
 	pic.set_command("psconvert", "-A -TG -E300");
 	pic.plot(datname, data.datval_, 
 		rg_xmin, rg_xmin + (rg_xnum - 1)*rg_dx, 
@@ -329,7 +331,7 @@ void gctl::regular_grid::load_netcdf_grid(std::string filename, mesh_data_type_e
 					new_data.create(NodeData, Scalar, node_num_, in_name[i], true, GCTL_BDL_MAX);
 					for (size_t j = 0; j < node_num_; j++)
 					{
-						new_data.datval_[i] = in_arr[i][j];
+						new_data.datval_[j] = in_arr[i][j];
 					}
 					
 					datalist_.push_back(new_data);
@@ -348,7 +350,7 @@ void gctl::regular_grid::load_netcdf_grid(std::string filename, mesh_data_type_e
 					new_data.create(ElemData, Scalar, ele_num_, in_name[i], true, GCTL_BDL_MAX);
 					for (size_t j = 0; j < ele_num_; j++)
 					{
-						new_data.datval_[i] = in_arr[i][j];
+						new_data.datval_[j] = in_arr[i][j];
 					}
 					
 					datalist_.push_back(new_data);
diff --git a/lib/mesh/regular_grid.h b/lib/mesh/regular_grid.h
index b575609..4885950 100644
--- a/lib/mesh/regular_grid.h
+++ b/lib/mesh/regular_grid.h
@@ -342,14 +342,6 @@ namespace gctl
 		double rg_xmin, rg_ymin; ///< 规则网格的x方向最小值和y方向最小值
 		double rg_dx, rg_dy; ///< 规则网格的x方向单元长度和y方向单元长度
 
-#ifdef GCTL_GRAPHIC_MATHGL
-		mathgl_dens plt; ///< mathgl绘图对象
-#endif // GCTL_GRAPHIC_MATHGL
-
-#ifdef GCTL_GRAPHIC_GMT
-		gmt_JX_single pic; ///< gmt绘图对象
-#endif // GCTL_GRAPHIC_GMT
-
 		array<vertex2dc> nodes; ///< 规则网格的节点数组
 		array<rectangle2d> elements; ///< 规则网格的单元数组
 	};