hi, thanx! putting in the comma and quotes are certainly not the most pleasant things to do, but it does the trick!!

does anyone know how I can write to a xls that puts each number in different cells? for example,

vector<int> nums;
nums.push_back(1);
nums.push_back(2);
nums.push_back(3);

ofstream myfile;...

it was good suggestion, well i've tested the emply loop and it took < 1 sec so it must be all the tokenizer and vector stuffs ... am i going overboard by using tokenizer, since i basically wanted to...

hi the file is not sorted ... although i could build a macro to sort all the files (they are all in csv format) but i wish to see what other alternatives there are

can anyone offer performance tips to improve the running time ?
this function opens a file (a 7000 row by 30 col), and stores each elements in a matrix data . current running time is 4 sec, and i...

thank you all. i guess i'll stick to find() then.
my vectors usually have 10k+ elements and i have many of such vectors. my goal is just to maximize efficiency as much as possible...

thank you. i'm new to map and could you fill me some details for me

map<double, int> counter;
vector<double> vec;
double x = 25.0; // value to search for
int pos = 0;
int i = 0;
while...

I would like to implement a function similar to the math function from excel, that is, given a vector and a value in the vector, return the relative position of that value in that container.
...

Got ya. Thanks

hi i have a function that opens a file and store the data into a matrix

void openfile(vector<vector<string> >& data, string path)
{
ifstream inFile;
inFile.open(path);
....

this does not...

does anyone have problem with linking to newmat library ?

running

#include "newmat.h"

int main()
{
Matrix A(2,2);
}

Thank you all.

Hey with all due respect I am a beginner in C++ and I AM trying to extract whatever knowledge I could from existing library . Please read my above posts; I have not asked anyone to explain the...

forgive my overstatement .. i'm actually planning to build a function and not the whole library

if you're familiar with quantlib maybe u can point me to a more indepth treatment of the functions,...

thanks..actually i read their documentation and it is not helping ..
ive decided to build the library myself...

does anyone know where i can find a library for minimizing a function, given a set of parameters and contraints? (similar to Solver in Excel)

i've searched around and found quantlib/solvers1d but...

thank you all. for the time being my strings are all convertible to double. but i might need wolfpack's suggestion just to be safe

i have a string that i want to convert to double. i know atof is a standard library function for that, however, the input argument to atof is (const char*), not string type that i have.

does...

i am a little bit confused about the actual usage of the find function of map

i have say a vector<string> and i want to return the relative position (or iterator) of a key (of type string) in...

thanks that was it ...

i am trying to use a boost library

#include "boost/date_time/gregorian/gregorian.hpp"

and my source file is in the same folder as boost. however, during compilation i get errors that...

Also, setting the min = 0 wont get you any new value for min, since the length of the call is always a positive number