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60 points

I’d be nice to have a color legend next to the y-axis of hue

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35 points

Or even better, change the color of the points and lines to match the associated hue.

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10 points

That’d be nice.

90 and 120 are rolling through the greens. Are posters mostly green? That seems odd to me.

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17 points

The problem is that averaging hue makes no sense at all because hue is not a longest scale.

If you take a red poster (0) and a blue poster (240), it averages to green. Or take red (0) and red (359), averaging to cyan (180).

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7 points

The average of 0° and 359° is obviously 359.5°.

it’s a radial scale.

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2 points

It would have made more sense if they had shown the distribution of hue as a polar graph and just had one every decade to show how it changes over time.

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9 points

yeah that part of the graph is completely useless to people who haven’t memorised the exact degrees of the scale, which is most people, even most artists

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