Geosoft GXNet API Reference
Geosoft.Desktop.GXNetX
CVVU Class
CVVU Methods
AverageRepeat Method
AverageRepeat2 Method
AverageRepeat2Ex Method
AverageRepeatEx Method
BinarySearch Method
BoxCox Method
BPFilt Method
Clip Method
ClipToDetectLimit Method
CondDepthTEM Method
Decimate Method
Deviation Method
Distance Method
Distance3D Method
DistanceLinkNonDummies Method
DistanceNonCumulative Method
DummyRange Method
DummyRangeEx Method
DummyRepeat Method
DupStats Method
ExpDist Method
Filter Method
FindGaps3D Method
FindStringItems Method
FractalFilter Method
iCloseXY Method
iCloseXYM Method
iCloseXYZ Method
iCloseXYZM Method
iDummyBackTracks Method
iFindDummy Method
Interp Method
iQCFillGaps Method
iSearchText Method
iTokenizeToValues Method
Mask Method
MaskAND Method
MaskOR Method
NLFilt Method
NoiseCheck Method
NoiseCheck2 Method
NormalDist Method
OffsetCircles Method
OffsetCorrect Method
OffsetCorrect2 Method
OffsetCorrect3 Method
OffsetCorrect4 Method
OffsetCorrectXYZ Method
OffsetRectangles Method
PickPeak Method
PickPeak2 Method
PickPeak3 Method
PolyFill Method
PolyFill2 Method
PolygonMask Method
Prune Method
QC Method
QC2 Method
RangeVectorMag Method
Regress Method
RelVarDup Method
RemoveDummy Method
RemoveDummy2 Method
RemoveDummy3 Method
RemoveDummy4 Method
RemoveDup Method
RemoveXYDup Method
RemoveXYDupIndex Method
RollingStats Method
SearchReplace Method
SearchReplaceText Method
SearchReplaceTextEx Method
Spline Method
Spline2 Method
Translate Method
Trend Method
Trend2 Method
UniformDist Method
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CVVUTrend2 Method

Calculate an n'th order best-fit polynomial, specified X

Namespace:  Geosoft.Desktop.GXNetX
Assembly:  geosoft.desktop.gxnetx (in geosoft.desktop.gxnetx.dll) Version: 2025.1.0.25
Syntax
Copy
public static void Trend2(
	CGXNETCore gxNetShared,
	CVV vv_x,
	CVV vv_d,
	int order,
	CVV vv_c
)

public static void Trend2(
	CGXNETCore gxNetShared,
	CVV vv_x,
	CVV vv_d,
	int order,
	CVV vv_c
)

Parameters

gxNetShared
Type: GeoEngine.Core.GXNetXCGXNETCore
A shared CGXNETCore
vv_x
Type: GeoEngine.Core.GXNetXCVV
VV with x spacing (input)
vv_d
Type: GeoEngine.Core.GXNetXCVV
VV with input data
order
Type: SystemInt32
Order of the polynomial 0-9
vv_c
Type: GeoEngine.Core.GXNetXCVV
VV to hold polynomial coefficients (returned)
Remarks
Returns coefficients c[0] .. c[n] Y(x) = c[0] + c[1]x + c[2](x**2) + ... + c[n](x**n) The X scale is defined by a X VV (see Trend_VV for unitless X). The polynomial VV length is set to the number of coefficients (order + 1)
See Also