Class: Numo::GSL::Spline2D

Inherits:
Object
  • Object
show all
Defined in:
ext/numo/gsl/interp/gsl_interp.c

Direct Known Subclasses

Bicubic, Bilinear

Defined Under Namespace

Classes: Bicubic, Bilinear

Instance Method Summary collapse

Instance Method Details

#eval(x, y) ⇒ DFloat

These functions return the interpolated value of z for a given point (x,y), using the interpolation object interp, data arrays xa, ya, and za and the accelerators xacc and yacc. When x is outside the range of xa or y is outside the range of ya, the error code GSL_EDOM is returned.

Parameters:

  • x (DFloat)
  • y (DFloat)

Returns:

  • (DFloat) —

    result



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# File 'ext/numo/gsl/interp/gsl_interp.c', line 860

static VALUE
spline2d_eval(VALUE self, VALUE v1, VALUE v2)
{
    ndfunc_arg_in_t ain[2] = {{cDF,0},{cDF,0}};
    ndfunc_arg_out_t aout[1] = {{cDF,0}};
    ndfunc_t ndf = {iter_spline2d_eval, STRIDE_LOOP|NDF_EXTRACT, 2,1, ain,aout};
    gsl_spline2d *w;
    gsl_interp_accel *a1, *a2;
    void *opts[3];
    VALUE vac1, vac2, v;

    TypedData_Get_Struct(self, gsl_spline2d, &spline2d_data_type, w);
    opts[0] = w;
    vac1 = interp_accel_s_new(cInterpAccel);
    TypedData_Get_Struct(vac1, gsl_interp_accel, &interp_accel_data_type, a1);
    opts[1] = a1;
    vac2 = interp_accel_s_new(cInterpAccel);
    TypedData_Get_Struct(vac2, gsl_interp_accel, &interp_accel_data_type, a2);
    opts[2] = a2;
    v = na_ndloop3(&ndf, opts, 2, v1, v2);
    RB_GC_GUARD(vac1);
    RB_GC_GUARD(vac2);
    return v;
}

#eval_deriv_x(x, y) ⇒ DFloat

These functions return the interpolated value d = \partial z / \partial x for a given point (x,y), using the interpolation object interp, data arrays xa, ya, and za and the accelerators xacc and yacc. When x is outside the range of xa or y is outside the range of ya, the error code GSL_EDOM is returned.

Parameters:

  • x (DFloat)
  • y (DFloat)

Returns:

  • (DFloat) —

    result



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# File 'ext/numo/gsl/interp/gsl_interp.c', line 930

static VALUE
spline2d_eval_deriv_x(VALUE self, VALUE v1, VALUE v2)
{
    ndfunc_arg_in_t ain[2] = {{cDF,0},{cDF,0}};
    ndfunc_arg_out_t aout[1] = {{cDF,0}};
    ndfunc_t ndf = {iter_spline2d_eval_deriv_x, STRIDE_LOOP|NDF_EXTRACT, 2,1, ain,aout};
    gsl_spline2d *w;
    gsl_interp_accel *a1, *a2;
    void *opts[3];
    VALUE vac1, vac2, v;

    TypedData_Get_Struct(self, gsl_spline2d, &spline2d_data_type, w);
    opts[0] = w;
    vac1 = interp_accel_s_new(cInterpAccel);
    TypedData_Get_Struct(vac1, gsl_interp_accel, &interp_accel_data_type, a1);
    opts[1] = a1;
    vac2 = interp_accel_s_new(cInterpAccel);
    TypedData_Get_Struct(vac2, gsl_interp_accel, &interp_accel_data_type, a2);
    opts[2] = a2;
    v = na_ndloop3(&ndf, opts, 2, v1, v2);
    RB_GC_GUARD(vac1);
    RB_GC_GUARD(vac2);
    return v;
}

#eval_deriv_xx(x, y) ⇒ DFloat

These functions return the interpolated value d = \partial^2 z / \partial x^2 for a given point (x,y), using the interpolation object interp, data arrays xa, ya, and za and the accelerators xacc and yacc. When x is outside the range of xa or y is outside the range of ya, the error code GSL_EDOM is returned.

Parameters:

  • x (DFloat)
  • y (DFloat)

Returns:

  • (DFloat) —

    result



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# File 'ext/numo/gsl/interp/gsl_interp.c', line 1070

static VALUE
spline2d_eval_deriv_xx(VALUE self, VALUE v1, VALUE v2)
{
    ndfunc_arg_in_t ain[2] = {{cDF,0},{cDF,0}};
    ndfunc_arg_out_t aout[1] = {{cDF,0}};
    ndfunc_t ndf = {iter_spline2d_eval_deriv_xx, STRIDE_LOOP|NDF_EXTRACT, 2,1, ain,aout};
    gsl_spline2d *w;
    gsl_interp_accel *a1, *a2;
    void *opts[3];
    VALUE vac1, vac2, v;

    TypedData_Get_Struct(self, gsl_spline2d, &spline2d_data_type, w);
    opts[0] = w;
    vac1 = interp_accel_s_new(cInterpAccel);
    TypedData_Get_Struct(vac1, gsl_interp_accel, &interp_accel_data_type, a1);
    opts[1] = a1;
    vac2 = interp_accel_s_new(cInterpAccel);
    TypedData_Get_Struct(vac2, gsl_interp_accel, &interp_accel_data_type, a2);
    opts[2] = a2;
    v = na_ndloop3(&ndf, opts, 2, v1, v2);
    RB_GC_GUARD(vac1);
    RB_GC_GUARD(vac2);
    return v;
}

#eval_deriv_xy(x, y) ⇒ DFloat

These functions return the interpolated value d = \partial^2 z / \partial x \partial y for a given point (x,y), using the interpolation object interp, data arrays xa, ya, and za and the accelerators xacc and yacc. When x is outside the range of xa or y is outside the range of ya, the error code GSL_EDOM is returned.

Parameters:

  • x (DFloat)
  • y (DFloat)

Returns:

  • (DFloat) —

    result



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# File 'ext/numo/gsl/interp/gsl_interp.c', line 1210

static VALUE
spline2d_eval_deriv_xy(VALUE self, VALUE v1, VALUE v2)
{
    ndfunc_arg_in_t ain[2] = {{cDF,0},{cDF,0}};
    ndfunc_arg_out_t aout[1] = {{cDF,0}};
    ndfunc_t ndf = {iter_spline2d_eval_deriv_xy, STRIDE_LOOP|NDF_EXTRACT, 2,1, ain,aout};
    gsl_spline2d *w;
    gsl_interp_accel *a1, *a2;
    void *opts[3];
    VALUE vac1, vac2, v;

    TypedData_Get_Struct(self, gsl_spline2d, &spline2d_data_type, w);
    opts[0] = w;
    vac1 = interp_accel_s_new(cInterpAccel);
    TypedData_Get_Struct(vac1, gsl_interp_accel, &interp_accel_data_type, a1);
    opts[1] = a1;
    vac2 = interp_accel_s_new(cInterpAccel);
    TypedData_Get_Struct(vac2, gsl_interp_accel, &interp_accel_data_type, a2);
    opts[2] = a2;
    v = na_ndloop3(&ndf, opts, 2, v1, v2);
    RB_GC_GUARD(vac1);
    RB_GC_GUARD(vac2);
    return v;
}

#eval_deriv_y(x, y) ⇒ DFloat

These functions return the interpolated value d = \partial z / \partial y for a given point (x,y), using the interpolation object interp, data arrays xa, ya, and za and the accelerators xacc and yacc. When x is outside the range of xa or y is outside the range of ya, the error code GSL_EDOM is returned.

Parameters:

  • x (DFloat)
  • y (DFloat)

Returns:

  • (DFloat) —

    result



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# File 'ext/numo/gsl/interp/gsl_interp.c', line 1000

static VALUE
spline2d_eval_deriv_y(VALUE self, VALUE v1, VALUE v2)
{
    ndfunc_arg_in_t ain[2] = {{cDF,0},{cDF,0}};
    ndfunc_arg_out_t aout[1] = {{cDF,0}};
    ndfunc_t ndf = {iter_spline2d_eval_deriv_y, STRIDE_LOOP|NDF_EXTRACT, 2,1, ain,aout};
    gsl_spline2d *w;
    gsl_interp_accel *a1, *a2;
    void *opts[3];
    VALUE vac1, vac2, v;

    TypedData_Get_Struct(self, gsl_spline2d, &spline2d_data_type, w);
    opts[0] = w;
    vac1 = interp_accel_s_new(cInterpAccel);
    TypedData_Get_Struct(vac1, gsl_interp_accel, &interp_accel_data_type, a1);
    opts[1] = a1;
    vac2 = interp_accel_s_new(cInterpAccel);
    TypedData_Get_Struct(vac2, gsl_interp_accel, &interp_accel_data_type, a2);
    opts[2] = a2;
    v = na_ndloop3(&ndf, opts, 2, v1, v2);
    RB_GC_GUARD(vac1);
    RB_GC_GUARD(vac2);
    return v;
}

#eval_deriv_yy(x, y) ⇒ DFloat

These functions return the interpolated value d = \partial^2 z / \partial y^2 for a given point (x,y), using the interpolation object interp, data arrays xa, ya, and za and the accelerators xacc and yacc. When x is outside the range of xa or y is outside the range of ya, the error code GSL_EDOM is returned.

Parameters:

  • x (DFloat)
  • y (DFloat)

Returns:

  • (DFloat) —

    result



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# File 'ext/numo/gsl/interp/gsl_interp.c', line 1140

static VALUE
spline2d_eval_deriv_yy(VALUE self, VALUE v1, VALUE v2)
{
    ndfunc_arg_in_t ain[2] = {{cDF,0},{cDF,0}};
    ndfunc_arg_out_t aout[1] = {{cDF,0}};
    ndfunc_t ndf = {iter_spline2d_eval_deriv_yy, STRIDE_LOOP|NDF_EXTRACT, 2,1, ain,aout};
    gsl_spline2d *w;
    gsl_interp_accel *a1, *a2;
    void *opts[3];
    VALUE vac1, vac2, v;

    TypedData_Get_Struct(self, gsl_spline2d, &spline2d_data_type, w);
    opts[0] = w;
    vac1 = interp_accel_s_new(cInterpAccel);
    TypedData_Get_Struct(vac1, gsl_interp_accel, &interp_accel_data_type, a1);
    opts[1] = a1;
    vac2 = interp_accel_s_new(cInterpAccel);
    TypedData_Get_Struct(vac2, gsl_interp_accel, &interp_accel_data_type, a2);
    opts[2] = a2;
    v = na_ndloop3(&ndf, opts, 2, v1, v2);
    RB_GC_GUARD(vac1);
    RB_GC_GUARD(vac2);
    return v;
}

#min_size ⇒ Integer

These functions return the minimum number of points required by the interpolation object interp or interpolation type T. For example, bicubic interpolation requires a minimum of 4 points.

Returns:

  • (Integer) 


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# File 'ext/numo/gsl/interp/gsl_interp.c', line 806

static VALUE
spline2d_min_size(VALUE self)
{
    gsl_spline2d *w;

    TypedData_Get_Struct(self, gsl_spline2d, &spline2d_data_type, w);

    return UINT2NUM(gsl_spline2d_min_size(w));
}

#name ⇒ String

This function returns the name of the interpolation type used by interp. For example,

printf (“interp uses ‘%s’ interpolation.\n”, gsl_interp2d_name (interp));

would print something like,

interp uses ‘bilinear’ interpolation.

Returns:

  • (String) 


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# File 'ext/numo/gsl/interp/gsl_interp.c', line 786

static VALUE
spline2d_name(VALUE self)
{
    gsl_spline2d *w;

    TypedData_Get_Struct(self, gsl_spline2d, &spline2d_data_type, w);

    return rb_str_new_cstr(gsl_spline2d_name(w));
}