Minor fix for plot envelopes (#90)

* Minor fix for plot envelopes Minor fix on bridge analysis plot envelopes. Bending moment was shown with negative sign and the y-axis was not inverted. Minor fix on "stress resultants". * Update "stress resultants"
ccaprani · May 15, 2024 · f109c7e · f109c7e
1 parent c35130b
commit f109c7e
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/pycba/bridge.py b/src/pycba/bridge.py
@@ -494,8 +494,9 @@ def plot_envelopes(self, env: Envelopes):
 
         ax = axsLeft[0]
         ax.plot([0, L], [0, 0], "k", lw=2)
-        ax.plot(x, -env.Mmax, "r")
-        ax.plot(x, -env.Mmin, "b")
+        ax.plot(x, env.Mmax, "r")
+        ax.plot(x, env.Mmin, "b")
+        ax.invert_yaxis()
         ax.grid()
         ax.set_ylabel("Bending Moment (kNm)")