ECDF calculations - Githubissues

Can we get some ECDF functions added to the Tools.Internal?

So far I've got this to help with visualizations, but could be useful for others as well:

` /**

Returns the ECDF y-values given data and associated xvalues
@param data data to compute the ecdf on
@param ecdf_xvals x values for the ecdf range (note: this can be calculated once which is why it isn't in the function itself given data min, max and length)
@return */ public static double[] getECDF(double[] data, double[] ecdf_xvals) { double tmpVal; double[] yvals= new double[ecdf_xvals.length]; for (int i = 0; i < ecdf_xvals.length; i++) { tmpVal=ECDFhelper(data, ecdf_xvals[i]); // Get all of the values <= X value yvals[i]=tmpVal/data.length; } return(yvals); }

/**
Subsets values of the data array for values <= value of interest
@param data data to compute the ecdf on
@param x x value for computing this specific probability
@return */ public static double ECDFhelper(double[] data, double x){ double count =0; for (int i = 0; i < data.length; i++) { if(data[i]<=x){ count+=1; } } return(count); }

/**
Get the x values to use for an ecdf calculation...
@param x The raw data array used for ecdf calculations */ public static double[] getECDF_XPoints(double[] x){ Array.sort(x); double[] xnew = Arrays.stream(x).distinct().toArray(); // unique values only return(xnew); } `

MathOnco / HAL