输出一个将mmat执行load-ascii的程序
时间: 2024-05-01 08:18:05 浏览: 101
以下是一个执行load-ascii的程序:
```
#include <iostream>
#include <fstream>
#include <sstream>
#include <Eigen/Dense>
int main() {
Eigen::MatrixXd mat;
std::ifstream file("data.txt");
std::string line;
int row = 0;
int col = 0;
// get the number of rows and columns
while (getline(file, line)) {
col = 0;
std::istringstream stream(line);
double x;
while (stream >> x) {
col++;
}
row++;
}
// reset file pointer and allocate matrix
file.clear();
file.seekg(0, std::ios::beg);
mat.resize(row, col);
// read data into matrix
int i = 0;
int j = 0;
while (getline(file, line)) {
std::istringstream stream(line);
double x;
while (stream >> x) {
mat(i, j) = x;
j++;
}
i++;
j = 0;
}
std::cout << "Matrix loaded successfully!" << std::endl;
std::cout << mat << std::endl;
return 0;
}
```
这个程序会读取一个名为“data.txt”的文本文件,并将其加载到一个Eigen矩阵中。请注意,您需要先安装Eigen库才能编译此程序。
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