Function readableName

pj_plotting/widget/src/FilterEditorPanel.cpp:61–72

Best human-readable label for a source curve: prefer the field display fields, falling back to the opaque catalog key only when those are empty. A materialized filter output is a single-column topic whose column is the generic "value" (derived_engine.cpp:413) — its identity lives in the topic name (the alias, e.g. "/angular_velocity/y[Absolute]"), so a bare "value" field is skipped in favour of t

// (the alias, e.g. "/angular_velocity/y[Absolute]"), so a bare "value" field is
// skipped in favour of the topic name rather than shown verbatim.
QString readableName(const CurveDescriptor& descriptor) {
  if (!descriptor.field_name.isEmpty() && descriptor.field_name != QLatin1String("value")) {
    return curveDisplayName(descriptor);  // full "topic/field" path, as the legend shows it
  }
  if (!descriptor.topic_name.isEmpty()) {
    return descriptor.topic_name;
  }
  if (!descriptor.field_path.isEmpty()) {
    return descriptor.field_path;
  }
  return descriptor.name;
}

// The catalog key identifying one column of a topic in a dataset — the canonical
// "dataset:.../topic:.../column:..." string the catalog and host plots key curves by.