Get the value of X at a vertical asymptote.
int ocmath_xatasymt( UINT nSize, const double * vx, const double * vy, double * dXAsympt )
Return OE_NOERROR if success.
EX1
void ocmath_xatasymt_ex1() { double dXAtasymt; vector vx, vy; //******* Create sample data ***************** vx.SetSize(13); vy.SetSize(13); vx[0] = -20; vy[0] = -3.04762; vx[1] = -14; vy[1] = -3.06667; vx[2] = -8; vy[2] = -3.11111; vx[3] = -2; vy[3] = -3.33333; vx[4] = -1; vy[4] = -3.5; vx[5] = 0; vy[5] = -4; vx[6] = 1; vy[6] = NANUM; vx[7] = 2; vy[7] = -2; vx[8] = 3; vy[8] = -2.5; vx[9] = 4; vy[9] = -2.66667; vx[10] = 10; vy[10] = -2.88889; vx[11] = 16; vy[11] = -2.93333; vx[12] = 22; vy[12] = -2.95238; //******** End of Sample Data Creation ******* int nRet = ocmath_xatasymt(vx.GetSize(), vx, vy, &dXAtasymt); if(nRet != OE_NOERROR) { printf("Error in computing the horizontal asymptote of X\n.") } printf("The value of X at the vertical asymptote of Y = %f\n", dXAtasymt); }
The function used for fitting function parameter initialization.
Get the value of X at a vertical asymptote. If the asymptote has two branches then X is defined as X = (xatymax+xatymin)/2 and if the asymptote has a single branch then X is defined as either xatymax or xatymin depending on where the reciprocal of the slope of the curve is closest to zero.
ocmath_yatasymt
origin.h