Module svg_render 

Dependency-free SVG rendering for crate::visualization::DebugVisualizer.

Every function in this module produces a real SVG document: axes are drawn from the actual data range, series are real polylines through the actual points, histogram bars come from a real binning pass and heatmap cells from a real colour-mapped normalisation of the supplied matrix.

This exists because SVG is the one raster-free vector format the crate can emit with zero extra dependencies (the COOLJAPAN Pure-Rust policy keeps the PNG/GIF encoders behind the optional visual / image / gif features). Formats this module cannot honestly produce are rejected by the caller with a structured error rather than being written out under a misleading file extension.

Functions

heatmap_svg

Render a real heatmap: one <rect> per matrix cell, coloured by the cell’s position within the finite value range of the whole matrix.

histogram_svg

Render a real histogram from the actual binned counts.

line_plot_svg

Render a real multi-series line plot.