The Ngmath routines are part of a library that contains a collection of
interpolators and approximators for one-dimensional, two-dimensional,
and three-dimensional data.
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csa1 |
Calculates an approximating cubic spline for the input data, one 1-dimensional section at a time.
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csa1d |
Calculates an approximating cubic spline for the input data, one 1-dimensional section at a time.
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csa1s |
Calculates an approximating cubic spline for the input data, one 1-dimensional section at a time.
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csa1x |
Calculates an approximating cubic spline for the input data, one 1-dimensional section at a time.
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csa1xd |
Calculates an approximating cubic spline for the input data, one 1-dimensional section at a time.
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csa1xs |
Calculates an approximating cubic spline for the input data, one 1-dimensional section at a time.
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csa2 |
Calculates an approximating cubic spline for two-dimensional input data.
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csa2d |
Calculates an approximating cubic spline for two-dimensional input data.
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csa2l |
Calculates an approximating cubic spline for two-dimensional input data.
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csa2ld |
Calculates an approximating cubic spline for two-dimensional input data.
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csa2ls |
Calculates an approximating cubic spline for two-dimensional input data.
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csa2lx |
Calculates an approximating cubic spline for two-dimensional input data.
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csa2lxd |
Calculates an approximating cubic spline for two-dimensional input data.
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csa2lxs |
Calculates an approximating cubic spline for two-dimensional input data.
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csa2s |
Calculates an approximating cubic spline for two-dimensional input data.
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csa2x |
Calculates an approximating cubic spline for two-dimensional input data.
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csa2xd |
Calculates an approximating cubic spline for two-dimensional input data.
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csa2xs |
Calculates an approximating cubic spline for two-dimensional input data.
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csa3 |
Calculates an approximating cubic spline for three-dimensional input data.
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csa3d |
Calculates an approximating cubic spline for three-dimensional input data.
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csa3l |
Calculates an approximating cubic spline for three-dimensional input data.
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csa3ld |
Calculates an approximating cubic spline for three-dimensional input data.
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csa3ls |
Calculates an approximating cubic spline for three-dimensional input data.
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csa3lx |
Calculates an approximating cubic spline for three-dimensional input data.
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csa3lxd |
Calculates an approximating cubic spline for three-dimensional input data.
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csa3lxs |
Calculates an approximating cubic spline for three-dimensional input data.
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csa3s |
Calculates an approximating cubic spline for three-dimensional input data.
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csa3x |
Calculates an approximating cubic spline for three-dimensional input data.
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csa3xd |
Calculates an approximating cubic spline for three-dimensional input data.
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csa3xs |
Calculates an approximating cubic spline for three-dimensional input data.
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csc2s |
Converts Cartesian coordinates on a unit sphere to spherical coordinates (lat/lon).
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csgetp |
Retrieves control parameters for Cssgrid routines.
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css2c |
Converts spherical coordinates (lat/lon) to Cartesian coordinates on a unit sphere.
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cssetp |
Sets control parameters for Cssgrid routines.
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cssgrid |
Uses tension splines to interpolate unstructured (randomly-spaced) data on a unit sphere to data values on a rectilinear grid.
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csstri |
Calculates a Delaunay triangulation of data randomly positioned on the surface of a sphere.
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csvoro |
Determines Voronoi polygons for data randomly positioned on a sphere and returns vertices for the one surrounding a specified input point.
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dsgrid2d |
Interpolates double data from an unstructured (randomly-spaced) grid to a rectilinear grid using inverse distance weighted interpolation. (Deprecated version.)
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dsgrid2s |
Interpolates float data from an unstructured (randomly-spaced) grid to a rectilinear grid using inverse distance weighted interpolation. (Deprecated version.)
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dsgrid3d |
Interpolates double data from an unstructured (randomly-spaced) grid to a 3D grid using inverse distance weighted interpolation. (Deprecated version.)
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dsgrid3s |
Interpolates float data from an unstructured (randomly-spaced) grid to a 3D grid using inverse distance weighted interpolation. (Deprecated version.)
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dspnt2 |
Interpolates 2D data at specified points.
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dspnt2d |
Interpolates 2D data at specified points. (Deprecated version.)
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dspnt2s |
Interpolates 2D float data at specified points. (Deprecated version.)
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dspnt3 |
Interpolates 3D data at specified points.
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dspnt3d |
Interpolates 3D double data at specified points. (Deprecated version.)
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dspnt3s |
Interpolates 3D float data at specified points. (Deprecated version.)
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dssetp |
Sets parameters for Dsgrid routines.
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ftcurv |
Calculates an interpolatory spline through a sequence of functional values.
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ftcurvd |
Calculates the derivatives of an interpolatory spline under tension.
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ftcurvi |
Calculates integrals of an interpolatory spline under tension between two user-specified limits.
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ftcurvp |
Calculates an interpolatory spline under tension through a sequence of functional values for a periodic function.
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ftcurvpi |
Calculates an integral of an interpolatory spline between two specified points.
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ftcurvps |
Calculates a smoothing spline.
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ftcurvs |
Calculates a smoothing spline.
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ftgetp |
Retrieves control parameters for Fitgrid routines.
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ftkurv |
Calculates an interpolatory spline for parametric curves.
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ftkurvd |
Calculates an interpolatory spline for parametric curves; it also calculates first and second derivatives of the interpolatory spline.
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ftkurvp |
Calculates an interpolatory spline under tension through a sequence of points in the plane forming a closed curve.
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ftkurvpd |
Calculates an interpolatory spline for closed parametric curves; it also calculates first and second derivatives of the interpolatory spline.
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ftsetp |
Sets control parameters for Fitgrid routines.
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ftsurf |
Calculates an interpolatory surface passing through a rectangular grid of function values.
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natgrid |
Interpolates data from an unstructured (randomly-spaced) grid to a rectilinear grid using natural neighbor interpolation.
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natgridd |
Interpolates double data on an unstructured grid to a rectilinear grid. (Deprecated version.)
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natgrids |
Interpolates float data on an unstructured grid to a rectilinear grid. (Deprecated version.)
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nngetaspectd |
Retrieves an aspect at a specified coordinate position.
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nngetaspects |
Retrieves an aspect at a specified coordinate position.
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nngetp |
Retrieves control parameters for Natgrid routines.
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nngetsloped |
Retrieves a slope at a specified coordinate position.
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nngetslopes |
Retrieves a slope at a specified coordinate position.
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nngetwts |
Retrieves natural neighbors and weights for the function values at those neighbors.
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nngetwtsd |
Retrieves natural neighbors and weights for the function values at those neighbors.
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nnpnt |
Interpolates from 2D random data to get values at a specified set of points.
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nnpntd |
Interpolates from 2D random double data to get values at a specified set of points. (Deprecated version.)
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nnpntend |
Terminates interpolation from 2D random data to get values at a specified set of points.
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nnpntendd |
Terminates interpolation from 2D random data to get values at a specified set of points.
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nnpntinit |
Initializes internal quantities, for given input data, to allow subsequent nnpnt calls to interpolate at specified points.
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nnpntinitd |
Initializes internal quantities, for given input data, to allow subsequent nnpntd calls to interpolate at specified points.
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nnpntinits |
Initializes internal quantities, for given input data, to allow subsequent nnpnts calls to interpolate at specified points.
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nnpnts |
Interpolates from 2D random float data to get values at a specified set of points. (Deprecated version.)
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nnsetp |
Sets control parameters for Natgrid routines.
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shgetnp |
Finds the nearest point, or points (in a specified set of points), to a given point in 3-space.
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shgetp |
Retrieves control parameters for Shgrid routines.
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shgrid |
Interpolates data from an unstructured grid to a grid in 3-space.
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shsetp |
Sets control parameters for Shgrid routines.
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