本文整理汇总了Java中ucar.ma2.IndexIterator.getDoubleNext方法的典型用法代码示例。如果您正苦于以下问题：Java IndexIterator.getDoubleNext方法的具体用法？Java IndexIterator.getDoubleNext怎么用？Java IndexIterator.getDoubleNext使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ucar.ma2.IndexIterator的用法示例。
在下文中一共展示了IndexIterator.getDoubleNext方法的13个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: trapz
import ucar.ma2.IndexIterator; //导入方法依赖的package包/类
/**
* Integrate vector array using the composite trapezoidal rule.
*
* @param y Vecotr array
* @param dx Spacing between all y elements
* @param ranges
* @return Definite integral as approximated by trapezoidal rule
* @throws ucar.ma2.InvalidRangeException
*/
public static double trapz(Array y, double dx, List<Range> ranges) throws InvalidRangeException {
int n = 1;
for (Range range : ranges) {
n = n * range.length();
}
n -= 1;
double a = 1;
double b = n * dx + a;
double r = 0;
double v;
IndexIterator ii = y.getRangeIterator(ranges);
int i = 0;
while (ii.hasNext()) {
v = ii.getDoubleNext();
r += v;
if (i > 0 && i < n) {
r += v;
}
i += 1;
}
r = r * ((b - a) / (2 * n));
return r;
}
示例2: getMinimum
import ucar.ma2.IndexIterator; //导入方法依赖的package包/类
/**
* Get minimum value
*
* @param a Array a
* @return Minimum value
*/
public static double getMinimum(Array a) {
IndexIterator iter = a.getIndexIterator();
double min = 1.7976931348623157E+308D;
while (iter.hasNext()) {
double val = iter.getDoubleNext();
if (!Double.isNaN(val)) {
if (val < min) {
min = val;
}
}
}
if (min == 1.7976931348623157E+308D) {
return Double.NaN;
} else {
return min;
}
}
示例3: getMaximum
import ucar.ma2.IndexIterator; //导入方法依赖的package包/类
/**
* Get maximum value
*
* @param a Array a
* @return Maximum value
*/
public static double getMaximum(Array a) {
IndexIterator iter = a.getIndexIterator();
double max = -1.797693134862316E+307D;
while (iter.hasNext()) {
double val = iter.getDoubleNext();
if (!Double.isNaN(val)) {
if (val > max) {
max = val;
}
}
}
if (max == -1.797693134862316E+307D) {
return Double.NaN;
} else {
return max;
}
}
示例4: sum
import ucar.ma2.IndexIterator; //导入方法依赖的package包/类
/**
* Compute sum value of an array
*
* @param a Array a
* @param ranges Range list
* @return Sum value
* @throws ucar.ma2.InvalidRangeException
*/
public static double sum(Array a, List<Range> ranges) throws InvalidRangeException {
double s = 0.0, v;
int n = 0;
IndexIterator ii = a.getRangeIterator(ranges);
while (ii.hasNext()) {
v = ii.getDoubleNext();
if (!Double.isNaN(v)) {
s += v;
n += 1;
}
}
if (n == 0) {
s = Double.NaN;
}
return s;
}
示例5: aveDouble
import ucar.ma2.IndexIterator; //导入方法依赖的package包/类
/**
* Average array
*
* @param a Array a
* @return Average value
*/
public static double aveDouble(Array a) {
double sum = 0.0D;
double v;
int n = 0;
IndexIterator iterA = a.getIndexIterator();
while (iterA.hasNext()) {
v = iterA.getDoubleNext();
if (!Double.isNaN(v)) {
sum += v;
n += 1;
}
}
if (n == 0) {
return Double.NaN;
} else {
return sum / n;
}
}
示例6: argMin
import ucar.ma2.IndexIterator; //导入方法依赖的package包/类
/**
* Get the index of the minimum value into the flattened array.
*
* @param a Array a
* @return Minimum value index
* @throws ucar.ma2.InvalidRangeException
*/
public static int argMin(Array a) throws InvalidRangeException {
double min = Double.MAX_VALUE, v;
int idx = 0;
IndexIterator iterator = a.getIndexIterator();
int i = 0;
while (iterator.hasNext()){
v = iterator.getDoubleNext();
if (!Double.isNaN(v)){
if (min > v){
min = v;
idx = i;
}
}
i += 1;
}
return idx;
}
示例7: argMax
import ucar.ma2.IndexIterator; //导入方法依赖的package包/类
/**
* Get the index of the maximum value into the flattened array.
*
* @param a Array a
* @return Maximum value index
* @throws ucar.ma2.InvalidRangeException
*/
public static int argMax(Array a) throws InvalidRangeException {
double max = Double.MIN_VALUE, v;
int idx = 0;
IndexIterator iterator = a.getIndexIterator();
int i = 0;
while (iterator.hasNext()){
v = iterator.getDoubleNext();
if (!Double.isNaN(v)){
if (max < v){
max = v;
idx = i;
}
}
i += 1;
}
return idx;
}
示例8: mean
import ucar.ma2.IndexIterator; //导入方法依赖的package包/类
/**
* Compute mean value of an array
*
* @param a Array a
* @param ranges Range list
* @return Mean value
* @throws ucar.ma2.InvalidRangeException
*/
public static double mean(Array a, List<Range> ranges) throws InvalidRangeException {
double mean = 0.0, v;
int n = 0;
IndexIterator ii = a.getRangeIterator(ranges);
while (ii.hasNext()) {
v = ii.getDoubleNext();
if (!Double.isNaN(v)) {
mean += v;
n += 1;
}
}
if (n > 0) {
mean = mean / n;
} else {
mean = Double.NaN;
}
return mean;
}
示例9: quantile
import ucar.ma2.IndexIterator; //导入方法依赖的package包/类
/**
* Quantile function
*
* @param a The data array
* @param aNum Quantile index
* @return Quantile value
*/
public static double quantile(Array a, int aNum) {
List<Double> dlist = new ArrayList<>();
IndexIterator ii = a.getIndexIterator();
double v;
while (ii.hasNext()) {
v = ii.getDoubleNext();
if (!Double.isNaN(v))
dlist.add(v);
}
return quantile(dlist, aNum);
}
示例10: GridData
import ucar.ma2.IndexIterator; //导入方法依赖的package包/类
/**
* Constructor
*
* @param array Data array
* @param xdata X data
* @param ydata Y data
* @param missingValue Missing value
* @param projInfo Projection info
*/
public GridData(Array array, List<Number> xdata, List<Number> ydata, double missingValue, ProjectionInfo projInfo) {
int yn = ydata.size();
int xn = xdata.size();
this.data = new double[yn][xn];
IndexIterator iter = array.getIndexIterator();
int idx = 0;
while (iter.hasNext()) {
double val = iter.getDoubleNext();
if (java.lang.Double.isNaN(val)) {
data[idx / xn][idx % xn] = missingValue;
} else {
data[idx / xn][idx % xn] = val;
}
idx += 1;
}
this.xArray = new double[xn];
this.yArray = new double[yn];
for (int i = 0; i < xn; i++) {
this.xArray[i] = xdata.get(i).doubleValue();
}
for (int i = 0; i < yn; i++) {
this.yArray[i] = ydata.get(i).doubleValue();
}
this.missingValue = missingValue;
this.projInfo = projInfo;
}
示例11: prodDouble
import ucar.ma2.IndexIterator; //导入方法依赖的package包/类
/**
* Produce array
*
* @param a Array a
* @return Produce value
*/
public static double prodDouble(Array a) {
double prod = 1.0D;
double v;
IndexIterator iterA = a.getIndexIterator();
while (iterA.hasNext()) {
v = iterA.getDoubleNext();
if (!Double.isNaN(v)) {
prod *= v;
}
}
return prod;
}
示例12: std
import ucar.ma2.IndexIterator; //导入方法依赖的package包/类
/**
* Compute standard deviation value of an array
*
* @param a Array a
* @param ranges Range list
* @return Standard deviation value
* @throws ucar.ma2.InvalidRangeException
*/
public static double std(Array a, List<Range> ranges) throws InvalidRangeException {
double mean = 0.0, v;
int n = 0;
IndexIterator ii = a.getRangeIterator(ranges);
while (ii.hasNext()) {
v = ii.getDoubleNext();
if (!Double.isNaN(v)) {
mean += v;
n += 1;
}
}
if (n > 0) {
mean = mean / n;
} else {
mean = Double.NaN;
}
if (Double.isNaN(mean))
return Double.NaN;
double sum = 0;
ii = a.getRangeIterator(ranges);
while (ii.hasNext()) {
v = ii.getDoubleNext();
if (!Double.isNaN(v)) {
sum += Math.pow((v - mean), 2);
}
}
sum = Math.sqrt(sum / n);
return sum;
}
示例13: copyTo1DJavaArray
import ucar.ma2.IndexIterator; //导入方法依赖的package包/类
protected static void copyTo1DJavaArray(IndexIterator iter, Object javaArray) {
double[] ja = (double[]) javaArray;
for (int i = 0; i < ja.length; i++) {
ja[i] = iter.getDoubleNext();
}
}