Improved frequency display format.

git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@6830 221aa14e-8319-0410-a670-987f0aec2ac5

diff --git a/gr-wxgui/src/python/fftsink2.py b/gr-wxgui/src/python/fftsink2.py
index 9c55801afa8786c465aeec597d52d52bf5bc8477..d64c22a6912957c7301828ce55d35bc917dfb622 100755 (executable)
--- a/gr-wxgui/src/python/fftsink2.py
+++ b/gr-wxgui/src/python/fftsink2.py
@@ -260,16 +260,19 @@ class fft_window (plot.PlotCanvas):
         if x >= 1e9:
             sf = 1e-9
             self.units = "GHz"
+           self.format = "%3.6f"
         elif x >= 1e6:
             sf = 1e-6
             self.units = "MHz"
+           self.format = "%3.3f"
         else:
             sf = 1e-3
             self.units = "kHz"
+           self.format = "%3.3f"
 
         if self.fftsink.input_is_real:     # only plot 1/2 the points
             x_vals = ((numpy.arange (L/2)
-                       * (self.fftsink.sample_rate * sf / L))
+                      * (self.fftsink.sample_rate * sf / L))
                       + self.fftsink.baseband_freq * sf)
             self.points = numpy.zeros((len(x_vals), 2), numpy.float64)
             self.points[:,0] = x_vals
@@ -277,7 +280,7 @@ class fft_window (plot.PlotCanvas):
         else:
             # the "negative freqs" are in the second half of the array
             x_vals = ((numpy.arange (-L/2, L/2)
-                       * (self.fftsink.sample_rate * sf / L))
+                      * (self.fftsink.sample_rate * sf / L))
                       + self.fftsink.baseband_freq * sf)
             self.points = numpy.zeros((len(x_vals), 2), numpy.float64)
             self.points[:,0] = x_vals
@@ -364,7 +367,7 @@ class fft_window (plot.PlotCanvas):
         index = numpy.argmin(numpy.abs(x_vals-ux))
         x_val = x_vals[index]
         db_val = self.points[index, 1]
-        text = "%3.3f %s dB=%3.3f" % (x_val, self.units, db_val)
+        text = (self.format+" %s dB=%3.3f") % (x_val, self.units, db_val)
 
         # Display the tooltip
         tip = wx.ToolTip(text)