Graphical Method | # (%) of Papers | # of Figures |
(a) Basic visual methods | ||
Bar chart | 17 (46%) | 37 |
Line/Point/Area chart | 18 (49%) | 22 |
Pie/Donut chart | 12 (32%) | 21 |
(b) Extended visual methods | ||
Histogram | 1 (3%) | 2 |
World map | 8 (22%) | 9 |
Heatmap | 1 (3%) | 2 |
Scatter plot | 7 (19%) | 7 |
Parallel plot | 1 (3%) | 1 |
Dendrogram | 1 (3%) | 1 |
Hilbert-curve | 1 (3%) | 1 |