public static Image DrawFalseColourSpectrograms(Arguments args, string fileStem, Dictionary <string, IndexProperties> indexProperties, Dictionary <string, double[, ]> spectra = null)
{
// note: the spectra are oriented as per visual orientation, i.e. xAxis = time framesDictionary<string, Int16>.KeyCollection keys = AuthorList.Keys
// string[] keys = spectra.Keys.ToCommaSeparatedList().Split(',');
// int frameCount = spectra[keys[0]].GetLength(1);
int sampleRate = 22050;
int frameWidth = 512;
double backgroundFilter = 0.75; // 0.75 means small values are accentuated.
var minuteOffset = TimeSpan.Zero;
var dataScale = args.TemporalScale;
string colourMap = args.ColourMap1 ?? LDSpectrogramRGB.DefaultColorMap1;
var cs1 = new LDSpectrogramRGB(minuteOffset, dataScale, sampleRate, frameWidth, colourMap)
{
FileName = fileStem,
BackgroundFilter = backgroundFilter,
IndexCalculationDuration = dataScale,
};
cs1.SetSpectralIndexProperties(indexProperties); // set the relevant dictionary of index properties
cs1.SpectrogramMatrices = spectra;
var image1 = cs1.DrawFalseColourSpectrogramChromeless("NEGATIVE", colourMap);
var fullDuration = TimeSpan.FromSeconds(image1.Width * dataScale.TotalSeconds);
string title = fileStem;
var titleImage = LDSpectrogramRGB.DrawTitleBarOfFalseColourSpectrogram(title, image1.Width);
int trackHeight = 20;
var timeScale = ImageTrack.DrawTimeRelativeTrack(fullDuration, image1.Width, trackHeight);
colourMap = args.ColourMap2 ?? LDSpectrogramRGB.DefaultColorMap2;
var image2 = cs1.DrawFalseColourSpectrogramChromeless("NEGATIVE", colourMap);
var list = new List <Image> {
titleImage, image1, timeScale, image2
};
var combinedImage = ImageTools.CombineImagesVertically(list.ToArray());
return(combinedImage);
}
