void integ_all(int i1 = 0, int i2 = -1)
{

	GraphLayer gl = Project.ActiveLayer();
	if(!gl)
		return;
	
	printf("Plot\tName\tArea\n");
	int nPlot = 1;
	int save_i1, save_i2;
	foreach(DataPlot dp in gl.DataPlots)
	{
		Curve crvMyCurve(dp);
		if(i2 > i1)
		{
			save_i1 = crvMyCurve.GetLowerBound();
			save_i2 = crvMyCurve.GetUpperBound();
			crvMyCurve.SetLowerBound(i1);
			crvMyCurve.SetUpperBound(i2);
		}
		IntegrationResult irMyResults;					// Origin C structure to store integration results 
		Curve_integrate( &crvMyCurve, &irMyResults); // Perform integration	
		printf("%d\t%s\t%f\n", nPlot++, crvMyCurve.GetName(), irMyResults.Area );
		if(i2 > i1)
		{
			crvMyCurve.SetLowerBound(save_i1);
			crvMyCurve.SetUpperBound(save_i2);
		}
		
	}
}