lsst::afw::image::pixel::variance_multiplies< typename > Struct Template Reference

Calculate the variance when we multiply two Pixels. More...

#include <Pixel.h>

Public Member Functions
T1	operator() (T1 const &x, T1 const &y, T1 const &vx, T1 const &vy) const
T1	operator() (T1 const &, T1 const &y, T1 const &vx) const

Detailed Description

template<typename>
struct lsst::afw::image::pixel::variance_multiplies< typename >

Calculate the variance when we multiply two Pixels.

Note

We provide a single-operand version for when the right-hand-side of an expression is a scalar, not a masked pixel,

Definition at line 38 of file Pixel.h.

Member Function Documentation

template<typename >

T1 lsst::afw::image::pixel::variance_multiplies< typename >::operator() ( T1 const &  x, T1 const &  y, T1 const &  vx, T1 const &  vy  ) const

inline

Definition at line 365 of file Pixel.h.

                                                                              {
        T1 const x2 = x*x;
        T1 const y2 = y*y;
        return x2*vy + y2*vx;
    }

template<typename >

T1 lsst::afw::image::pixel::variance_multiplies< typename >::operator() ( T1 const &  , T1 const &  y, T1 const &  vx  ) const

inline

Definition at line 371 of file Pixel.h.

                                                              {
        return vx*y*y;
    }

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The documentation for this struct was generated from the following file:

• /lsst/home/lsstsw/stack/Linux64/afw/master-gae20e2b580+3/include/lsst/afw/image/Pixel.h