patched channel plotter -> Stefan Brüns

[debian/gnuradio] / gr-wxgui / src / python / plotter / channel_plotter.py

diff --git a/gr-wxgui/src/python/plotter/channel_plotter.py b/gr-wxgui/src/python/plotter/channel_plotter.py
index 22126bd0bb79a452db3b403d0ab1aa61be437675..e7e83e5fa90bbb55551455cbd1b5c3bd46305e8b 100644 (file)
--- a/gr-wxgui/src/python/plotter/channel_plotter.py
+++ b/gr-wxgui/src/python/plotter/channel_plotter.py
@@ -107,6 +107,7 @@ class channel_plotter(grid_plotter_base):
                for channel in reversed(sorted(self._channels.keys())):
                        samples = self._channels[channel][SAMPLES_KEY]
                        num_samps = len(samples)
+                       if not num_samps: continue
                        #use opengl to scale the waveform
                        glPushMatrix()
                        glTranslatef(self.padding_left, self.padding_top, 0)
@@ -128,7 +129,7 @@ class channel_plotter(grid_plotter_base):
                        glColor3f(*self._channels[channel][COLOR_SPEC_KEY])
                        marker = self._channels[channel][MARKERY_KEY]
                        if marker: glPointSize(marker)
-                       glVertexPointer(2, GL_FLOAT, 0, points)
+                       glVertexPointerf(points)
                        glDrawArrays(marker is None and GL_LINE_STRIP or GL_POINTS, 0, len(points))
                        glPopMatrix()