Fix matplotlib sliders

Author: jhavl

roboticstoolbox/backends/PyPlot/PyPlot.py

@@ -572,11 +572,21 @@ def update(val, text, robot):  # pragma: no cover
 
             if robot.isrevolute(j):
                 slider = Slider(
-                    ax, "q" + str(j), qlim[0, j], qlim[1, j], np.degrees(q[j]), "% .1f°"
+                    ax=ax,
+                    label="q" + str(j),
+                    valmin=qlim[0, j],
+                    valmax=qlim[1, j],
+                    valinit=np.degrees(q[j]),
+                    valfmt="% .1f°",
                 )
             else:
                 slider = Slider(
-                    ax, "q" + str(j), qlim[0, j], qlim[1, j], robot.q[j], "% .1f"
+                    ax=ax,
+                    label="q" + str(j),
+                    valmin=qlim[0, j],
+                    valmax=qlim[1, j],
+                    valinit=robot.q[j],
+                    valfmt="% .1f",
                 )
 
             slider.on_changed(lambda x: update(x, text, robot))

roboticstoolbox/backends/PyPlot/PyPlot2.py

@@ -344,16 +344,21 @@ def update(val, text, robot):  # pragma: no cover
 
             if robot.isrevolute(j):
                 slider = Slider(
-                    self.axjoint[j],
-                    "q" + str(j),
-                    qlim[0, j],
-                    qlim[1, j],
-                    np.degrees(q[j]),
-                    "% .1f°",
+                    ax=self.axjoint[j],
+                    label="q" + str(j),
+                    valmin=qlim[0, j],
+                    valmax=qlim[1, j],
+                    valinit=np.degrees(q[j]),
+                    valfmt="% .1f°",
                 )
             else:
                 slider = Slider(
-                    self.axjoint[j], "q" + str(j), qlim[0, j], qlim[1, j], q[j], "% .1f"
+                    ax=self.axjoint[j],
+                    label="q" + str(j),
+                    valmin=qlim[0, j],
+                    valmax=qlim[1, j],
+                    valinit=q[j],
+                    valfmt="% .1f",
                 )
 
             slider.on_changed(lambda x: update(x, text, robot))