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Diffstat (limited to 'gr-qtgui/lib/TimeDomainDisplayPlot.cc')
| -rw-r--r-- | gr-qtgui/lib/TimeDomainDisplayPlot.cc | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/gr-qtgui/lib/TimeDomainDisplayPlot.cc b/gr-qtgui/lib/TimeDomainDisplayPlot.cc index d319c58a27..032da2547d 100644 --- a/gr-qtgui/lib/TimeDomainDisplayPlot.cc +++ b/gr-qtgui/lib/TimeDomainDisplayPlot.cc @@ -279,8 +279,20 @@ TimeDomainDisplayPlot::_resetXAxisPoints() void TimeDomainDisplayPlot::_autoScale(double bottom, double top) { - // Auto scale the y-axis with a margin of 20% - setYaxis(bottom - fabs(bottom)*0.20, top + fabs(top)*0.20); + // Auto scale the y-axis with a margin of 20% (10 dB for log scale) + double _bot = bottom - fabs(bottom)*0.20; + double _top = top + fabs(top)*0.20; + if(d_semilogy) { + if(bottom > 0) { + setYaxis(_bot-10, _top+10); + } + else { + setYaxis(1e-3, _top+10); + } + } + else { + setYaxis(_bot, _top); + } } void |