#include "TString.h"
#include "TDatime.h"
#include "TGraph.h"
#include "TAxis.h"
#include "TCanvas.h"

void test(const char *fin = "file.txt") {
if (!fin && !fin[0]) return; // just a precaution
std::ifstream ifs(fin, std::ifstream::in);
if (!ifs.good()) return; // just a precaution

TString ymd, hms;
 Double_t v,x,z,y;
 
 TGraph *g = new TGraph();
 
 // TH1F* h1 = new TH1F("h1","test",100,X1,X2);
 
 while(ifs >> ymd >> hms >> v >> x >> z >> y)
   {

     
     TDatime t(ymd + " " + hms); // "yyyy-mm-dd hh:mm:ss"
     g->SetPoint(g->GetN(), t.Convert(), z);
  
   }


 //int nPoints = g->GetN();
 
 if (g->GetN() > 1) {
  
   g->GetXaxis()->SetTimeDisplay(1);
   g->GetXaxis()->SetTimeFormat("#splitline{%y-%m-%d}{%H:%M:%S}%F1970-01-01 00:00:00");
   g->GetXaxis()->SetLabelOffset(0.025);


   
   
   TCanvas *c = new TCanvas("c", "c",99,208,1789,704);
   c->Range(1.501311e+09,84,1.502605e+09,258);
   c->SetFillColor(0);
   c->SetBorderMode(0);
   c->SetBorderSize(2);
   c->SetFrameBorderMode(0);
   c->SetFrameBorderMode(0);
   
   g->GetXaxis()->SetTitle("[year-month-date ; hour-min-sec]");
   g->GetXaxis()->SetTickLength(0.2);
   g->GetXaxis()->SetLabelFont(42);
   g->GetXaxis()->SetLabelOffset(0.025);
   g->GetXaxis()->SetLabelSize(0.03);
   g->GetXaxis()->SetTitleOffset(1.45);
   g->GetXaxis()->SetTitleFont(42);
   g->GetYaxis()->SetTitle("#frequency");
   g->GetYaxis()->SetLabelFont(42);
   g->GetYaxis()->SetTitleFont(42);
   
  
   
   g->Draw("ALP");
   g->SetLineWidth(3);
   c->Modified(); c->Update();

  
 }
}