Merge pull request #628 from suavecode/fix-airfoil_import

fixing extra airfoil zeros

trunk/SUAVE/Methods/Geometry/Two_Dimensional/Cross_Section/Airfoil/import_airfoil_geometry.py

@@ -141,7 +141,7 @@ def import_airfoil_geometry(airfoil_geometry_file, npoints = 200,surface_interpo
                 next_line  = data_block[line_count+1].strip()
                 next_line  = next_line.replace(',','')
 
-                if next_line.split()[0]>line_check.split()[0] and next_line.split()[0] !=0.:
+                if next_line.split()[0]>line_check.split()[0] and float(next_line.split()[0]) >0.:
                     upper_surface_flag = False
 
         # Upper surface values in Selig format are reversed from Lednicer format, so fix that
@@ -155,6 +155,13 @@ def import_airfoil_geometry(airfoil_geometry_file, npoints = 200,surface_interpo
     x_lo_surf = np.array(x_lo_surf)
     y_up_surf = np.array(y_up_surf)
     y_lo_surf = np.array(y_lo_surf)  
+
+    # Check for extra zeros (OpenVSP exports extra zeros)
+    if len(np.unique(x_up_surf))!=len(x_up_surf):
+        x_up_surf = x_up_surf[1:]
+        x_lo_surf = x_lo_surf[1:]
+        y_up_surf = y_up_surf[1:]
+        y_lo_surf = y_lo_surf[1:]
 
     # create custom spacing for more points and leading and trailing edge
     t            = np.linspace(0,4,npoints-1)