Getting Separate Vectors from txt File

[gh24]

I am putting in an input with 4 lines of data. I get an assertion error after the second time function(T,P[i]) is run.

[JMJAtlanta]

Hrmmm... I am not. But memory leaks can be that way.

Were you testing with the code I just posted, or is this some other code?

If it's other code, please post your code.

If it is the same code, please post your "Data.txt" file.

[gh24]

Wow you have gotten me so close I am starting to get giddy. Everything is working except for that assertion error. As I said before I can't get through function(time,P[i]) the second time around or when i =1.

[JMJAtlanta]

Can you post your Data.txt file?

[gh24]

Here is the code I am using. I checked it against the one you posted and I couldn't see any differences.

vector < vector<double> > get_data(){

	double value_just_read_from_line;
	vector< vector<double> > P(0);
	int lineCount = -1;
	string line;
	int lengthOfLineTerminator = 2;

	ifstream input_file ("Data.txt");

	if (input_file.is_open ())
	{
		input_file >> lineCount;
		input_file.ignore(lengthOfLineTerminator);

		int index = 0;
		while (!input_file.eof()) {
			getline(input_file, line);	// read in the line from the file
			stringstream stream(line);
			vector<double> v;
			while (stream >> value_just_read_from_line) {
				v.push_back(value_just_read_from_line);
				if (input_file.peek() == '\r' || input_file.peek() == '\n')
					break;
			}
			P.push_back(v);
			index++;
		}
	}
	else
			cout << "Input_file_Data.txt_does_not_exist_in_PWD" << endl;

	cout << "There are" <<P.size() << " Cash Flows, _and_They_are : " <<endl;
	for (size_t i = 0; i < P.size(); i++) {
		cout << "Cash Flow #" << i+1 << ": " << endl;
		vector<double> vec = P[i];
		for (size_t j = 0; j < vec.size(); j++)
				cout << P[i][j] << " ";
		cout << endl;
	}
	cout << endl;
	return(P);
}

vector<double> buildTimeVector(vector<double> incomingVector, vector<double>& outgoingVector) {
	for(double d = 0; d < incomingVector.size(); d++) {
		outgoingVector.push_back(d);
	}
	return outgoingVector;
}

double function(vector<double>& time, vector<double>& value_of_data_at_that_time) {
	for(int i = 0; i < time.size(); i++)
		cout << "For position " << time[i] << " the vaule is " << value_of_data_at_that_time[i] << endl;
	return 0;
}

int main(){
	
	vector < vector<double> > P;

	vector <double>  CF;
	vector <double>  T;
	P = get_data();
	for(int a=0; a<P.size();a++){
	buildTimeVector(P[a],T);
	function(T,P[a]);

	cout << endl;
	}
	cout<<endl;
	return 0;
}

[gh24]

My data file is just something I have saved in a notepad and it is:


3

1090 5 -1000 60 50 56 1057.77
1000 5 90 700 3 3 3 3 3 3
2 22 2 2 2 2 2

[JMJAtlanta]

Aha! Just as I thought. :)

Take a look at line 60. T is being reused each time. So the numbers keep getting tacked on to the end of the vector. So if you have 1 item on line "0" and 3 items on line "1" your vector will look like "0 0 1 2" instead of "0 1 2".

So you have two options. Declare T within the "for loop", or clear out the vector before using it again (i.e. add outgoingVector.clear(); on your line 46).

Give either way a shot, and let me know how you fare.