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vega / voyager2

Deprecated version of Voyager 2 (in Angular), please use https://github.com/vega/voyager.
https://vega.github.io/voyager2/
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When you have QxQ, adding categorical field as color isn't generally helpful #257

Closed light-and-salt closed 8 years ago

light-and-salt commented 8 years ago

When you have a QxQ scatterplot, adding categorical field as color isn't generally helpful unless the categories can cluster in the QxQ scatterplot (like the x:Horsepower, y:Miles_per_Gallon, color:Origin example in our tutorial).

kanitw commented 8 years ago

I think this is an overstatement. The real issue here is the plot's density. https://github.com/uwdata/compassql/issues/277

light-and-salt commented 8 years ago

I think density is related, but clusters also matter. Even if the data is dense, if there are clear-cut color clusters, user can still reason about clusters.

For example, in the chart below, the purple and orange clusters tell something: Dramatization and Factual types are based on real life events... (whether that's truthful or not is a different story) screen shot 2016-09-09 at 9 12 55 am

When there is less color clustering, then you don't know what to say about a colored chart. Is there a relationship? Hard to say! screen shot 2016-09-09 at 9 14 39 am

kanitw commented 8 years ago

Then it starts coming to a point where you can apply statistics, which will in turn introduce inconsistencies.

kanitw commented 8 years ago

Interesting research to be done though