Отображение на графике

//---------------------------------------------------------------------------
 
#include <vcl.h>
#include <stdlib.h>
#include <stdio.h>
#include <iostream.h>
#include <cstdlib.h>
#pragma hdrstop
 
#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
 
 
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::CheckBox1Click(TObject *Sender)
{
 
  Form1->Memo1->Lines->LoadFromFile("text.txt") ;
   for (int i=0; i<Form1->Memo1->Lines->Count;i++)
   {
   AnsiString s1=Memo1->Lines->Strings[i],s2;
   int space_position=s1.Pos(" ");
   s2=s1.SubString(1, space_position+1);
   s1=s1.Delete(1,space_position+1).TrimLeft();
   //------------------------------------------------
   space_position=s1.Pos(" ");
   s2+=s1.SubString(1,space_position);
   
   s1=s1.Delete(1,space_position+1).TrimLeft();
   //float s3=s2.ToDouble();
   float s4=StrToFloat(s2);
   Form1->Series1->Add(s4,s1,clRed) ;
   }
}