Re: [pdf-devel] PDF sampled functions and interpolation

[jemarch]

      The spec talks about 2D interpolation with little detail.
      Do they intend do do a sequence of 1D interpolation steps?
      This depends on the ordering of the grid array, not on the data 
      alone, and it would defy precalculation of spline coefficients.
      Bicubic interpolation is not mentioned in this section.

   In fact I am still trying to understand that point of the spec. It is
   complex and not well explained. 

   My understanding is that the input samples are organized in a
   conceptual m*n-dimensional structure, where `m' is the number of
   inputs for the sampled function and `n' the number of outputs. 

Actually, the length of the samples table is 

   n * mul_i=0->m (Size[m])

where `n' is the number of outputs, `m' is the number of inputs and
`Size' is the array from the function dictionary.

For each output there are a full set of samples:

-- samples for output 1--
-- samples for output 2--
-- samples for output 3--

-- 
Jose E. Marchesi  <address@hidden>
                  <address@hidden>

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