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Gender Balance [] by Moritz Stefaner provides an eye-opening look on how well females are represented as speakers for conferences on data visualization, creative code and information graphics.

Based on Andy Kirk's data visualization census surveying more than 1500 people, the proportion of women in this field has been estimated to be around 23%. Ideally, then, thematic conferences should be able to reach this threshold, or should they rather follow the biological ~50-50 distribution?

Each square symbol represents a unique conference, which is horizontally divided by men (brown) and women (green). The vertical width represents the total number of speakers, whereas the horizontal position stands for the proportion of women speakers in the line-up of the event. The graph can be further sorted by time or conference series.