csv2mat.h

#include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include <opencv2/opencv.hpp>

using namespace std;

static cv::Mat readCsv(string path, int w, int h) {
	std::vector<std::vector<float>> vv;

	ifstream ifs(path);

	string line;
	while (getline(ifs, line)) {
		std::istringstream i_stream(line);

		string value;
		std::vector<float> temp;
		while (getline(i_stream, value, ',')) {
			temp.push_back(std::stof(value));
		}

		vv.push_back(temp);
	}

	//cout << vv.size() << endl;
	//cout << vv[0].size() << endl;

	cv::Mat temp(0, vv[0].size(), cv::DataType<float>::type);
	for (unsigned int i = 0; i < h; i++)
	{
		// Make a temporary cv::Mat row and add to NewSamples _without_ data copy
		cv::Mat Sample(1, w, cv::DataType<float>::type, vv[i].data());

		temp.push_back(Sample);
	}

	return temp;
}

static cv::Mat readCsv(string path) {
	std::vector<std::vector<float>> vv;

	ifstream ifs(path);

	string line;
	while (getline(ifs, line)) {
		std::istringstream i_stream(line);

		string value;
		std::vector<float> temp;
		while (getline(i_stream, value, ',')) {
			temp.push_back(std::stof(value));
		}

		vv.push_back(temp);
	}

	//cout << vv.size() << endl;
	//cout << vv[0].size() << endl;

	cv::Mat temp(0, vv[0].size(), cv::DataType<float>::type);
	for (unsigned int i = 0; i < vv.size(); i++)
	{
		// Make a temporary cv::Mat row and add to NewSamples _without_ data copy
		cv::Mat Sample(1, vv[0].size(), cv::DataType<float>::type, vv[i].data());

		temp.push_back(Sample);
	}

	return temp;
}