public H2D() {
offset = new MultiIndex(xAxis.getNBins(), yAxis.getNBins());
hBuffer = new double[offset.getArraySize()];
this.attr.getProperties().setProperty("title", "");
this.attr.getProperties().setProperty("xtitle", "");
this.attr.getProperties().setProperty("ytitle", "");
}
/**
* Creates an error buffer with each element being 0.0
*
* @return a double 2D array with a size of xAxis * yAxis with each element being 0.0
*/
public double[][] getErrorBuffer() {
double[][] buff = new double[xAxis.getNBins()][yAxis.getNBins()];
for (int xloop = 0; xloop < xAxis.getNBins(); xloop++) {
for (int yloop = 0; yloop < yAxis.getNBins(); yloop++) {
buff[xloop][yloop] = 0.0;
}
}
return buff;
}
/**
* Generates a 2D array with the content in the histogram
*
* @return a 2D array with each bin in its array index
*/
public double[][] getContentBuffer() {
double[][] buff = new double[xAxis.getNBins()][yAxis.getNBins()];
for (int xloop = 0; xloop < xAxis.getNBins(); xloop++) {
for (int yloop = 0; yloop < yAxis.getNBins(); yloop++) {
buff[xloop][yloop] = this.getBinContent(xloop, yloop);
}
}
return buff;
}
/**
* Creates a projection of the 2D histogram onto the Y Axis, adding up all the x bins for each y
* bin
*
* @return a H1D object that is a projection of the Histogram2D object onto the y-axis
*/
public H1D projectionY() {
String name = "Y Projection";
double yMin = yAxis.min();
double yMax = yAxis.max();
int yNum = yAxis.getNBins();
H1D projY = new H1D(name, yNum, yMin, yMax);
double height = 0.0;
for (int y = 0; y < yAxis.getNBins(); y++) {
height = 0.0;
for (int x = 0; x < xAxis.getNBins(); x++) {
height += this.getBinContent(x, y);
}
projY.setBinContent(y, height);
}
return projY;
}
/**
* Creates a projection of the 2D histogram onto the X Axis, adding up all the y bins for each x
* bin
*
* @return a H1D object that is a projection of the Histogram2D object onto the x-axis
*/
public H1D projectionX() {
String name = "X Projection";
double xMin = xAxis.min();
double xMax = xAxis.max();
int xNum = xAxis.getNBins();
H1D projX = new H1D(name, xNum, xMin, xMax);
double height = 0.0;
for (int x = 0; x < xAxis.getNBins(); x++) {
height = 0.0;
for (int y = 0; y < yAxis.getNBins(); y++) {
height += this.getBinContent(x, y);
}
projX.setBinContent(x, height);
}
return projX;
}
/**
* Creates a 1-D Histogram slice of the specified y Bin
*
* @param xBin the bin on the y axis to create a slice of
* @return a slice of the x bins on the specified y bin as a 1-D Histogram
*/
public H1D sliceX(int xBin) {
String name = "Slice of " + xBin + " X Bin";
double xMin = yAxis.min();
double xMax = yAxis.max();
int xNum = yAxis.getNBins();
H1D sliceX = new H1D(name, name, xNum, xMin, xMax);
for (int x = 0; x < xNum; x++) {
sliceX.setBinContent(x, this.getBinContent(xBin, x));
}
return sliceX;
}
/**
* Creates a 1-D Histogram slice of the specified x Bin
*
* @param yBin the bin on the x axis to create a slice of
* @return a slice of the y bins on the specified x bin as a 1-D Histogram
*/
public H1D sliceY(int yBin) {
String name = "Slice of " + yBin + " Y Bin";
double xMin = xAxis.min();
double xMax = xAxis.max();
int xNum = xAxis.getNBins();
H1D sliceY = new H1D(name, name, xNum, xMin, xMax);
for (int y = 0; y < xNum; y++) {
sliceY.setBinContent(y, this.getBinContent(y, yBin));
}
return sliceY;
}
/**
* Checks if that bin is valid (exists)
*
* @param bx The x coordinate of the bin
* @param by The y coordinate of the bin
* @return The truth value of the validity of that bin
*/
private boolean isValidBins(int bx, int by) {
if ((bx >= 0) && (bx <= xAxis.getNBins()) && (by >= 0) && (by <= yAxis.getNBins())) {
return true;
}
return false;
}
