Merge pull request #346 from jgray-19/plot_improvements

Fix 0 Strength Quadrupoles Plot

Author: ldeniau

src/madl_plot.mad

@@ -407,6 +407,10 @@ local function eShap (param, elem, dir)
     }
   else
     local fv = sign(elem[ysym] or 1)
+    if fv == 0 then -- If the elem[ysym] is 0, we want to plot the shape in the middle
+      elemshift = false
+      yshft = shape.yshft and shape.yshft(elem, elemshift) or 0
+    end
     ysym = ysym == "angle" and fv*dir or elemshift and fv or 1
     func = {\y -> yscl*(yshft + ysym*y)}
   end