reindex #1662
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reindex #1662
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mbostock
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Aug 18, 2023
src/options.js
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| @@ -17,6 +17,8 @@ export function valueof(data, value, type) { | |||
| ? map(data, constant(value), type) | |||
| : typeof value?.transform === "function" | |||
| ? maybeTypedArrayify(value.transform(data), type) | |||
| : value && data?.reindex | |||
| ? maybeTypedMap(data.reindex, (i) => value[i], type) | |||
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This assumes that value is an array, but it’s technically possible to be an arbitrary iterator. (Though, I discovered there’s some confusion in isOptions.)
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Nice! 👏
I switched to using a symbol since that seems cleaner/safer than assigning to array.reindex. (Who knows, maybe that’ll be a method in JavaScript in the future.) I also tweaked the logic slightly to handle channel values specified as iterables (even though there’s a latent confusion in isOptions or isObject that I’m not fixing here).
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This seems to be working? (ref. #1649)
demo contrasting the three branches:
https://observablehq.com/@observablehq/plot-reindex-1662