本文整理汇总了C++中Vec_DP类的典型用法代码示例。如果您正苦于以下问题：C++ Vec_DP类的具体用法？C++ Vec_DP怎么用？C++ Vec_DP使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了Vec_DP类的20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，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: plotInterp
void plotInterp(const Vec_DP &xdata, const Vec_DP &ydata,
const Vec_DP &interpx, const Vec_DP &interpy) {
int pointnum = 100;
double start = xdata[0];
double end = xdata[xdata.size() - 1];
myplot::data_set container;
myplot::plot_data realPoints("k+2");
myplot::plot_data interpPoints("r.");
myplot::plot_data curve("c-2");
for (int i = 0; i < pointnum; i++) {
double x = start + ((double) i * (end - start)) / (pointnum - 1);
double y, dy;
NR::polint(xdata, ydata, x, y, dy);
curve.add_point(x, y);
}
for (int i = 0; i < xdata.size(); i++) {
realPoints.add_point(xdata[i], ydata[i]);
}
for (int i = 0; i < interpx.size(); i++) {
interpPoints.add_point(interpx[i], interpy[i]);
}
container.push_back(curve);
container.push_back(realPoints);
container.push_back(interpPoints);
myplot::plot(container);
}
开发者ID:plhrja，项目名称:C-NumeerisetMenetelmat，代码行数:27，代码来源:exc502.cpp
示例2: generateNoisyData
void generateNoisyData(Vec_DP& xdata, Vec_DP& ydata, Vec_DP& coeffs, double low, double high){
for (int i = 0; i < coeffs.size(); i++) {
coeffs[i] = rdm(low, high);
}
for (int i = 0; i < xdata.size(); i++) {
ydata[i] = (coeffs[0]*pow(xdata[i],2) + coeffs[1]*xdata[i] + coeffs[2]) * rdm(0.8, 1.2);
}
}
开发者ID:plhrja，项目名称:C-NumeerisetMenetelmat，代码行数:8，代码来源:exc401.cpp
示例3: runtime_error
Vec_DP operator-(Vec_DP const& a, Vec_DP const& b) {
if (a.size() != b.size())
throw runtime_error("Dimensions mismatch in vector subtraction!");
Vec_DP x(a.size());
for (int i = 0; i < a.size(); i++) {
x[i] = a[i] - b[i];
}
return x;
}
开发者ID:lybeck，项目名称:NuMe，代码行数:9，代码来源:w9e1.cpp
示例4: spline_interp
void spline_interp(Vec_DP const& xdata, Vec_DP const& ydata, double yp1, double ypn, Vec_DP const& x, Vec_DP& y) {
Vec_DP y2(xdata.size());
NR::spline(xdata, ydata, yp1, ypn, y2);
for (int i = 0; i < x.size(); i++) {
NR::splint(xdata, ydata, y2, x[i], y[i]);
}
double err, errx;
get_error(x, y, err, errx);
cout << "Maximum error in spline interpolation: " << err << ", at x = " << errx << endl;
}
开发者ID:lybeck，项目名称:NuMe，代码行数:12，代码来源:w5e1.cpp
示例5: poly_interp
void poly_interp(Vec_DP const& xdata, Vec_DP const& ydata, Vec_DP const& x, Vec_DP& y) {
Vec_DP c(xdata.size());
NR::polcoe(xdata, ydata, c);
for (int i = 0; i < x.size(); i++) {
y[i] = poly_val(x[i], c);
}
double err, errx;
get_error(x, y, err, errx);
cout << "Maximum error in polynomial interpolation: " << err << ", at x = " << errx << endl;
}
开发者ID:lybeck，项目名称:NuMe，代码行数:12，代码来源:w5e1.cpp
示例6: interp_spline_periodic
double interp_spline_periodic(const Vec_DP &xdata, const Vec_DP &ydata, double deriv,
Vec_DP &interpx, Vec_DP &interpy, Vec_DP &error) {
Vec_DP y2(xdata.size());
NR::spline(xdata, ydata, deriv, deriv, y2);
for (int i = 0; i < interpx.size(); i++) {
double y, x = i * (M_PI / 200);
NR::splint(xdata, ydata, y2, x, y);
interpx[i] = x;
interpy[i] = y;
error[i] = abs(sin(x) - y);
}
return get_max_error(error);
}
开发者ID:plhrja，项目名称:C-NumeerisetMenetelmat，代码行数:13，代码来源:exc501.cpp
示例7: solve_system
void solve_system(Vec_DP xdata, Vec_DP ydata, Vec_DP zdata){
Mat_DP A(xdata.size(), 3);
Vec_DP b(xdata.size());
for (int i = 0; i < xdata.size(); i++) {
double x = xdata[i];
double y = ydata[i];
A[i][0] = x;
A[i][1] = y;
A[i][2] = 1;
b[i] = zdata[i];
}
SVDsolve(A, b, coeffs);
}
开发者ID:plhrja，项目名称:C-NumeerisetMenetelmat，代码行数:14，代码来源:exc705.cpp
示例8: construct_data
void construct_data(Vec_DP &xdata, Vec_DP &ydata){
for (int i = 0; i < xdata.size(); i++) {
double x = i * (M_PI / 10);
xdata[i] = x;
ydata[i] = sin(x);
}
}
开发者ID:plhrja，项目名称:C-NumeerisetMenetelmat，代码行数:7，代码来源:exc501.cpp
示例9: get_max_error
double get_max_error(const Vec_DP &error){
double max = 0;
for (int i = 0; i < error.size(); i++) {
max = (error[i] > max) ? error[i] : max;
}
return max;
}
开发者ID:plhrja，项目名称:C-NumeerisetMenetelmat，代码行数:7，代码来源:exc501.cpp
示例10: poly_val
double poly_val(double x, Vec_DP const& c) {
double y = c[0];
for (int n = 1; n < c.size(); n++) {
y += c[n] * pow(x, n);
}
return y;
}
开发者ID:lybeck，项目名称:NuMe，代码行数:7，代码来源:w5e1.cpp
示例11: subst
Vec_DP subst(Vec_DP const& w) {
if (w.size() != 2)
throw runtime_error("Wrong dimension for input in subst!");
Vec_DP x(2);
x[0] = -2 + 2.8 * pow(sin(w[0]), 2);
x[1] = w[1];
return x;
}
开发者ID:lybeck，项目名称:NuMe，代码行数:8，代码来源:w11e2.cpp
示例12: constructData_B
void constructData_B(Vec_DP &xdata, Vec_DP &ydata) {
double ylow = -10;
double yhigh = 10;
for (int i = 0; i < xdata.size(); i++) {
xdata[i] = i + 1;
ydata[i] = rdm(ylow, yhigh);
}
}
开发者ID:plhrja，项目名称:C-NumeerisetMenetelmat，代码行数:8，代码来源:exc502.cpp
示例13: interp
void interp(const Vec_DP &xdata, const Vec_DP &ydata,
Vec_DP &interpx, Vec_DP &interpy, Vec_DP &error) {
for (int i = 0; i < interpx.size(); i++) {
double y, errory, x = 2 + i * 0.25;
NR::polint(xdata, ydata, x, y, errory);
interpx[i] = x;
interpy[i] = y;
error[i] = errory;
}
}
开发者ID:plhrja，项目名称:C-NumeerisetMenetelmat，代码行数:10，代码来源:exc502.cpp
示例14: GSsolve_iter
void GSsolve_iter(Mat_DP &a, Vec_DP &b, Vec_DP &x, Vec_DP &xold) {
int i, j, rows = a.nrows();
if ((rows != a.ncols()) || (rows != b.size()) ||
(rows != x.size()) || (rows != xold.size())) {
cout << "Argument error in GaussSeidel_iter\n" << endl;
abort();
}
double s;
for (i = 0; i < rows; i++) {
s = 0;
for (j = 0; j < rows; j++) {
s += (j <= i - 1) ? a[i][j] * x[j] :
(j >= i + 1) ? a[i][j] * xold[j] : 0;
}
xold[i] = x[i];
x[i] = (b[i] - s) / a[i][i];
}
}
开发者ID:plhrja，项目名称:C-NumeerisetMenetelmat，代码行数:19，代码来源:exc402.cpp
示例15: interp_polint
double interp_polint(const Vec_DP &xdata, const Vec_DP &ydata,
Vec_DP &interpx, Vec_DP &interpy, Vec_DP &error) {
for (int i = 0; i < interpx.size(); i++) {
double y, errory, x = i * (M_PI / 200);
NR::polint(xdata, ydata, x, y, errory);
interpx[i] = x;
interpy[i] = y;
error[i] = abs(sin(x) - y);
}
return get_max_error(error);
}
开发者ID:plhrja，项目名称:C-NumeerisetMenetelmat，代码行数:11，代码来源:exc501.cpp
示例16: math_deriv
void MATHEMATICS::math_deriv(Vec_DP &v1, Vec_DP v0, Vec_DP v2, double t0, double t2) {
int n=v1.size();
for (int i=0; i<n; i++) {
v1[i]=(v2[i]-v0[i])/(t2-t0);
}
}
开发者ID:dancleather，项目名称:FreeBody，代码行数:12，代码来源:math_deriv.cpp
示例17: get_error
void get_error(Vec_DP const& x, Vec_DP y, double& maxerr, double& errx) {
maxerr = -INFINITY;
double yy, err;
for (int i = 0; i < x.size(); i++) {
yy = sin(x[i]);
err = abs(y[i] - yy);
if (err > maxerr) {
maxerr = err;
errx = x[i];
}
}
}
开发者ID:lybeck，项目名称:NuMe，代码行数:12，代码来源:w5e1.cpp
示例18: math_vecmag
double MATHEMATICS::math_vecmag(Vec_DP a) {
double c=0;
int x=a.size();
for(int i=0; i<x; i++) {
c+=a[i]*a[i];
}
c=sqrt(c);
return c;
}
开发者ID:dancleather，项目名称:FreeBody，代码行数:13，代码来源:math_vecmag.cpp
示例19: construct_A
void construct_A(Mat_DP& A, Vec_DP& xdata){
Vec_DP sums(4);
for (int i = 0; i < sums.size(); i++) {
sums[i] = 0;
}
for (int i = 0; i < xdata.size(); i++) {
sums[0] += xdata[i];
sums[1] += pow(xdata[i], 2);
sums[2] += pow(xdata[i], 3);
sums[3] += pow(xdata[i], 4);
}
A[0][0] = sums[3];
A[0][1] = sums[2];
A[0][2] = sums[1];
A[1][0] = sums[2];
A[1][1] = sums[1];
A[1][2] = sums[0];
A[2][0] = sums[1];
A[2][1] = sums[0];
A[2][2] = xdata.size();
}
开发者ID:plhrja，项目名称:C-NumeerisetMenetelmat，代码行数:22，代码来源:exc401.cpp
示例20: construct_b
void construct_b(Vec_DP& b, Vec_DP& xdata, Vec_DP& ydata){
Vec_DP sums(3);
for (int i = 0; i < sums.size(); i++) {
sums[i] = 0;
}
for (int i = 0; i < xdata.size(); i++) {
sums[0] += ydata[i] * pow(xdata[i], 2);
sums[1] += ydata[i] * xdata[i];
sums[2] += ydata[i];
}
b[0] = sums[0];
b[1] = sums[1];
b[2] = sums[2];
}
开发者ID:plhrja，项目名称:C-NumeerisetMenetelmat，代码行数:15，代码来源:exc401.cpp
注：本文中的Vec_DP类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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