Tendances par Langue
Évolution du volume et de la durée moyenne par langue · 1970–2025
Volume de titres par langue (absolu)
Encoding note (rough): data item = one language-year record. Mark used = line + small dots, chosen because lines emphasize temporal continuity and dots make sampled yearly values explicit. Visual variables: x-position maps year, y-position maps track count, and color hue maps language.
Part relative par langue (normalisée, %)
Encoding note (rough): data item = one language-year record after normalization by year total. Mark used = stacked area, chosen because it communicates both trend continuity and changing composition shares over time. Visual variables: x-position maps year, y-height maps share in %, and color hue maps language.
Durée moyenne par langue
Encoding note (rough): data item = one language-year record. Mark used = line chart (in a two-column panel layout), chosen because duration is a continuous metric that is easiest to read as a temporal trajectory. Visual variables: x-position maps year, y-position maps average duration in minutes, and color hue maps language.