Fixed WaterfallView

src/gui/waterfallview.cc

@@ -115,13 +115,13 @@ WaterFallView::_onSpectrumUpdated() {
   for (size_t i=0; i<_N; i++) {
     int idx = (_spectrum->fftSize()/2+i) % _spectrum->fftSize();
     double value;
-    if ((TOP_DOWN == _dir) || (RIGHT_LEFT == _dir)) {
+    if ((TOP_DOWN == _dir) || (LEFT_RIGHT == _dir)) {
       value = 10*log10(_spectrum->spectrum()[_spectrum->fftSize()-1-idx])-10*log10(_N);
     } else {
       value = 10*log10(_spectrum->spectrum()[idx])-10*log10(_N);
     }
     // Reset NaNs
-    if (value != value) { value = 0; }
+    if (value != value) { value = std::numeric_limits<double>::min(); }
     painter.setPen((*_colorMap)(value));
     painter.drawPoint(i, _M-1);
   }