#include "TCanvas.h"
#include "TH1.h"
#include "TGraph.h"
#include "TAxis.h"
#include "TGaxis.h"


    
    

//This program reads data from the table2.txt file and plot the fourth and sixth colomn as x and y


void ReverseYAxis (TH1 *h);

void Astro () {

    TGraph *g = new TGraph("/Users/kumakenkoji/Desktop/table3.txt", "%*s %*s %*s %lg %*s %lg");
    TCanvas *c1 = new TCanvas ("c1", "canvas1", 200,10,600,400);
    
    
    g->GetYaxis()->SetTitle("V mag");
    g->GetXaxis()->SetTitle("B-V");
                        
    g-> Draw("A*");
    ReverseYAxis(g);

}
    
// reverse Yaxis

void ReverseYAxis (TH1 *h)
{
    
    //Remove the current axis
    h->GetYaxis()->SetLabelOffset(999);
    h->GetYaxis()->SetTickLength(0);
     
     
     //Redraw the new axis
    gPad->Update();
    TGaxis *newaxis = new TGaxis(gPad->GetUxmin(),
                                 gPad->GetUymax(),
                                 gPad->GetUxmin()-0.001,
                                 gPad->GetUymin(),
                                 h->GetYaxis()->GetXmin(),
                                 h->GetYaxis()->GetXmax(),
                                 510,"+");
    newaxis->SetLabelOffset(-0.03);
    newaxis->Draw();
    
}