Code refactoring

Author: demvlad

src/graph_spectrum.js

@@ -113,7 +113,7 @@ export function FlightLogAnalyser(flightLog, canvas, analyserCanvas) {
           break;
 
         case SPECTRUM_TYPE.PSD_VS_THROTTLE:
-          fftData = GraphSpectrumCalc.dataLoadFrequencyVsThrottle(true);
+          fftData = GraphSpectrumCalc.dataLoadPowerSpectralDensityVsThrottle();
           break;
 
         case SPECTRUM_TYPE.PSD_VS_RPM:

src/graph_spectrum_calc.js

@@ -297,9 +297,12 @@ GraphSpectrumCalc._dataLoadPowerSpectralDensityVsX = function(vsFieldNames, minV
 
 };
 
-GraphSpectrumCalc.dataLoadFrequencyVsThrottle = function(drawPSD = false) {
-  return drawPSD ? this._dataLoadPowerSpectralDensityVsX(FIELD_THROTTLE_NAME, 0, 100) :
-                   this._dataLoadFrequencyVsX(FIELD_THROTTLE_NAME, 0, 100);
+GraphSpectrumCalc.dataLoadFrequencyVsThrottle = function() {
+  return this._dataLoadFrequencyVsX(FIELD_THROTTLE_NAME, 0, 100);
+};
+
+GraphSpectrumCalc.dataLoadPowerSpectralDensityVsThrottle = function() {
+  return this._dataLoadPowerSpectralDensityVsX(FIELD_THROTTLE_NAME, 0, 100);
 };
 
 GraphSpectrumCalc.dataLoadFrequencyVsRpm = function(drawPSD = false) {