rawData.getDomain().execFunction(minIntervalFn);
minDomainInterval = minIntervalFn.getMinInterval();
// Assign min/max range-Y values
rangeIntervals = new Interval[mipMapChain.getRangeTupleSize()];
ExtremaArrayFunction extremaFn = new ExtremaArrayFunction();
for (int i = 0; i < rangeIntervals.length; i++) {
Array1D rangeVals = rawData.getRange(i);
rangeVals.execFunction(extremaFn);
rangeIntervals[i] = extremaFn.getExtrema();
}
}