Scatter

A simple scatter plot, over a board.

show << Board::Add("conv")->at("figure")
     << Scatter::Add("points", "conv", "residuals.csv");

Sources

c++ Scatter::Add(name, board, ...)

Scatter::Add("s", fig, points);            // vector<vec2>
Scatter::Add("s", fig, "residuals.csv");   // two columns, re-read on save
Scatter::Add("s", fig, ys, vec2(0, 10));   // values on a grid

A point outside the range is not drawn.

What it publishes

Setting		Default
s/color	the ink	next in the board's palette
s/size	radius of a mark, in pixels	5
s/reveal	how much of it is there, 0 to 1	1

Like a curve it arrives left to right, and caption is what a legend calls it. Setting one of these names is the same three ways as everywhere else.

Marks are drawn over the board with ImGui, so a scatter carries no shader and writes no views/*.glsl file.

Deck format

- scatter: samples      # "board: conv" implied, the last board declared
  data: residuals.csv   # one source: data, values, points
  size: 6
  caption: measured