% test-multi-series.tex — verify multi-series \diagrammodel:
% comma-separated y-variables, unit-aware filtering, shared y-axis range
% scaled to the joint min/max, colour-blind safe palette + dash cycle,
% and legend built from each variable's display text.

\documentclass{article}
\usepackage{numodel}

\begin{document}

\newmodelprefix{osc}
\mvar{T}{t}{0}{\s}{2}{systeem}
\mvar{Dt}{dt}{0.01}{\s}{2}{systeem}
\mvar{V}{v}{0}{\m\per\s}{3}{hulp}
\mvar{X}{x}{0.10}{\m}{3}{voorraad}
\mvar{Y}{y}{0.05}{\m}{3}{voorraad}
\mvar{M}{m}{0.250}{\kg}{3}{constante}
\mvar{K}{k}{40}{\N\per\m}{2}{constante}

\mrule{V}{\oscV - (\oscK / \oscM) * \oscX * \oscDt}
\mrule{X}{\oscX + \oscV * \oscDt}
\mrule{Y}{\oscY + 0.5 * \oscV * \oscDt}
\mrule{T}{\oscT + \oscDt}
\mstop{\oscT >= 1.5}

\computemodel

\section*{1. Single series (legacy behaviour, mark-only plot)}
\diagrammodel{T}{X}{osc-single}

\section*{2. Two y-variables, same unit (\unit{\m}) — combined plot}
\diagrammodel{T}{X,Y}{osc-multi}

\section*{3. Mixed units: \texttt{X}, \texttt{V}, \texttt{Y} —
\texttt{V} (\unit{\m\per\s}) must be dropped with a warning}
\diagrammodel{T}{X,V,Y}{osc-mismatch}

\end{document}