janstary / vp Goto Github PK

Sensible constants are hardwired now, but
can we be smarter about the size of dots and fonts?
With a few dots, they can be bigger;
with a crowded plot, they should be smaller.

With SVG, overmousing the dot should display the actual formant values.

A vowel group should have its color assigned in group->color,
so that we don't have to call rgb(groupindex) more than once.

The standard PS fonts and encodings simply do not have the glyphs we need, i.e. the Unicode of IPA.
We need to embed the Charis or Doulos fonts (or others) in the resulting PS file,
or better yet, encode just the glyphs actually used in the plot.
We know what those are: the labels.

The frequency axes should probably be logarithmic.

PS is nice, and a natural choice for this kind of output, and has no external dependencies.
However, we should probably output other formats too: at least PDF and PNG.

The Prolog and Setup is naively copied from what mandoc does.
This needs to be tweaked to our actual setup.

Have a proper page setup that specifies A4 correctly.

Currently, the scales are ticked in hundreds of Hz on one side.
The other side should have the corresponding Bark scale, or possibly ERB.

Currently, we use the default portrait orientation, with axes going right and up from the lower left corner.
The usual in vowel plots, however, is scales going down (F1) and right (F2) from the upper right corner,
using the landscape oriantation.