Currently, 19 algorithms appear nicely in the legends of line and blob plots.
What is the strategy? Is a limit needed?
As described in T27474, the legend could also be broken into two columns.
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One strategy would be to add an optional argument in which the number of displayed teams can be specified. For challenges with 200 participants, even multiple columns might be confusing.
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The plots can already be limited to the top x performing algorithms. This can be reused in that case. Then the question is how many legend items are we going to "guarantee" appearing nicely?
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only podium plots and line plots actually require algorithms in legend, otherwise algorithm is identifiable from x-axis or facet label. Now, these redundant legends are removed.
besides that stacked frequency plots have colored tasks and respective legend
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max number of tasks / algorithms now 20 in stacked frequency and line plots, respectively for legend appear on right, otherwise put on bottom of plot. could also be put to lower number