Bug fix for floating point data inconsistencies

Floating point (non-integer) environmental data was being treated differently for presence and background points, resulting in the "add samples to background" option not working correctly.  This caused some response curves to have abrupt changes, typically at the edge of the predictor range.

density/CachedFeature.java

@@ -24,16 +24,16 @@ a copy of this software and associated documentation files (the
 package density;
 
 class CachedFeature extends Feature {
-    float[] vals=null;
+    double[] vals=null;
     Feature f;
 
     public CachedFeature(Feature f) {
 	this.f = f;
 	name = f.name;
 	n = f.n;
-	vals = new float[n];
+	vals = new double[n];
 	for (int p=0; p<n; p++)
-	    vals[p] = (float) f.eval(p);
+	    vals[p] = f.eval(p);
     }
 
     public double eval(int p) { return vals[p]; }

density/Runner.java

@@ -1238,14 +1238,14 @@ Feature[] featuresWithSamples(Feature[] f, Sample[] ss) {
 	double[] backgroundHash = new double[f[0].n];
 	for (int i=0; i<f[0].n; i++)
 	    for (int j=0; j<f.length; j++) 
-		backgroundHash[i] += rnd[j] * (float) f[j].eval(i);
+		backgroundHash[i] += rnd[j] * f[j].eval(i);
 	Arrays.sort(backgroundHash);
 	ArrayList samplesToAdda = new ArrayList();
 	for (int i=0; i<ss.length; i++) {
 	    double r = 0.0;
 	    for (int j=0; j<f.length; j++)
 		if (f[j].hasData(ss[i]))
-		    r += rnd[j] * (float) f[j].eval(ss[i]);
+		    r += rnd[j] * f[j].eval(ss[i]);
 	    if (is("addAllSamplesToBackground") || Arrays.binarySearch(backgroundHash, r) < 0)  // not found
 		samplesToAdda.add(ss[i]);
 	}

density/SampleSet2.java

@@ -162,12 +162,12 @@ public void process() {
 		    Sample s = new Sample(-1, r, c, y, x, spid, null);
 
 		    int goodvals = 0;
-		    float[] data = new float[n];
+		    double[] data = new double[n];
 		    for (int j=0; j<n; j++) {
 			int idx = layerToColumn[j];
 			data[j] = NODATA_value;
 			if (idx!=-1 && idx<fields.length && !fields[SampleSet.firstEnvVar+idx].trim().equals("")) 
-			    data[j] = Float.parseFloat(fields[SampleSet.firstEnvVar+idx]);
+			    data[j] = Double.parseDouble(fields[SampleSet.firstEnvVar+idx]);
 			if (data[j] == NODATA_value && idx!=-1) {
 			    warnPartialData(x,y,sampleFileName,layers[j].name);
                             if (!params.allowpartialdata())
@@ -204,7 +204,7 @@ static void warnPartialData(double x, double y, String sampleFileName, String fi
     public void createMaps() {
 	Sample[] s = getSamples();
 	for (int i=0; i<s.length; i++) {
-	    float[] data = (float[]) datamap.get(s[i]);
+	    double[] data = (double[]) datamap.get(s[i]);
 	    HashMap map = new HashMap();
 	    for (int j=0; j<n; j++)
 		map.put(layers[j].getName(), (data[j]==SampleSet.NODATA_value) ? null : new Double(data[j]));

density/Utils.java

@@ -32,7 +32,7 @@ a copy of this software and associated documentation files (the
 
 public class Utils {
 
-    static String version = "3.4.2";
+    static String version = "3.4.3";
     static boolean interrupt=false, warnings=true;
     public static boolean verbose=false, visible=true;
     static JFrame topLevelFrame = null;