From: W. Trevor King <wking@tremily.us>
Date: Thu, 2 Aug 2012 16:17:21 +0000 (-0400)
Subject: AFM.stepper_approach should only call figure.show if it exits.
X-Git-Tag: v0.5~4
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=4c1fcb8472d10b52fffb50f55ba8a9b2146bf298;p=pyafm.git

AFM.stepper_approach should only call figure.show if it exits.

For example, figures generated with the Agg backend don't have a
'show' method.
---

diff --git a/pyafm/afm.py b/pyafm/afm.py
index fc8dacb..60741c6 100644
--- a/pyafm/afm.py
+++ b/pyafm/afm.py
@@ -486,7 +486,8 @@ class AFM (object):
             axes.set_title('stepper approach {}'.format(timestamp))
             plot = axes.plot(position, deflection, 'b.-')
             figure.canvas.draw()
-            figure.show()
+            if hasattr(figure, 'show'):
+                figure.show()
             if not _matplotlib.is_interactive():
                 _matplotlib_pyplot.show()