view docs/spec/interval-index.tikz @ 693:b1723ae7675e

begin work on sampling API

This is motivated by the need to be able to sample with arbitrary feature data
(e.g. from a feature file) against a database, for the JNMR "collections" paper
revisions or possible ISMIR paper revisions.  That bit doesn't work yet, but
the C-ified version of the current functionality (sample db x db and
sample key x db) works to the level of anecdotal tests.

The general approach is to mirror the _query_spec() API, where a whole heap
of knobs and twiddles are available to the user.  Unlike in the _query_spec()
API, not quite all of the knobs make sense (and even fewer are actually
implemented), but the basic idea is the same.

I pity the poor chump who will have to document all this.

\draw (-2,0.8) rectangle (1.2,1);
% stupid floating point.
\foreach \x in {-1.6,-1.2,...,0.9} {
  \draw(\x,0.8) -- (\x,1);
}
\begin{scope}[->,>=stealth]
  \fill (-1.8,0.9) ellipse (0.05);
  \draw (-1.8,0.9) -- (-2.5,0.2);
  \draw (-1.8,0.9) -- (-2,0.2);
  \fill (-1.4,0.9) ellipse (0.05);
  \draw (-1.4,0.9) -- (-2,0.2);
  \draw (-1.4,0.9) -- (-1.4,0.2);
  \fill (-1.0,0.9) ellipse (0.05);
  \draw (-1.0,0.9) -- (-1.4,0.2);
  \draw (-1.0,0.9) -- (-0.5,0.2);
  \fill (-0.6,0.9) ellipse (0.05);
  \draw (-0.6,0.9) -- (-0.5,0.2);
  \draw (-0.6,0.9) -- (0,0.2);
  \fill (-0.2,0.9) ellipse (0.05);
  \draw (-0.2,0.9) -- (0,0.2);
  \draw (-0.2,0.9) -- (0.8,0.2);
  \fill (0.2,0.9) ellipse (0.05);
  \draw (0.2,0.9) -- (0.8,0.2);
  \draw (0.2,0.9) -- (1.3,0.2);
  \fill (0.6,0.9) ellipse (0.05);
  \draw (0.6,0.9) -- (1.3,0.2);
  \draw (0.6,0.9) -- (1.8,0.2);
  \fill (1.0,0.9) ellipse (0.05);
  \draw (1.0,0.9) -- (1.8,0.2);
  \draw (1.0,0.9) -- (2.5,0.2);
\end{scope}