Spiral Charts

Scientific American plots hugely dissimilar values.

When some values in a bar graph are very large and others are much smaller it is difficult to discern the differences. All of the small values produce bars that are barely visible so there is no way to see the differences among the small bars. The spiral chart solves this by bending the bars. The high values spiral around and around. Differences in the low value bars are still clearly visible.

SciAm-SpiralChart

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