From be839328975d6cb6e0c74e5f4af720babe2c6d3d Mon Sep 17 00:00:00 2001
From: mlauer154 <mlauer2@illinois.edu>
Date: Thu, 22 Feb 2024 17:42:00 -0600
Subject: [PATCH] Added a check to make sure airfoil selection is not empty
 when running XFOIL

---
 pymead/gui/gui.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pymead/gui/gui.py b/pymead/gui/gui.py
index d5ad4228..958499c1 100644
--- a/pymead/gui/gui.py
+++ b/pymead/gui/gui.py
@@ -1135,6 +1135,9 @@ def single_airfoil_viscous_analysis(self):
             # coords = tuple(self.mea.deepcopy().airfoils[xfoil_settings['airfoil']].get_coords(
             #     body_fixed_csys=False, as_tuple=True))
 
+            if xfoil_settings["airfoil"] == "":
+                self.disp_message_box("An airfoil was not chosen for analysis")
+                return
             coords = self.geo_col.container()["airfoils"][xfoil_settings["airfoil"]].get_coords_selig_format()
 
             aero_data, _ = calculate_aero_data(xfoil_settings['airfoil_analysis_dir'],