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workbook
Learning ObservableJS.
Public
Edited
Apr 25, 2023
1
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mta = FileAttachment("mta.csv").csv({typed: true})
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columns = mta.columns
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Object.keys(mta[0])
// If you're not using a CSV, this will work for any tabular data. Get the keys from the first record
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viewof checkboxes = Inputs.checkbox(columns, {label: "Select some", value: ["Date", "Subways: Total Estimated Ridership"]})
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selectedData = mta.map(d => {
const returnObject = {};
checkboxes.forEach(e => returnObject[e] = d[e]);
return returnObject
})
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selectedData
Type Table, then Shift-Enter. Ctrl-space for more options.

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filters
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filteredData = selectedData.filter(d => {
const filter = checkboxes.map((e, i) => {
return d[e] >= filters[i]
})
return filter.includes(false) ? false : true
})
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filteredData
Type Table, then Shift-Enter. Ctrl-space for more options.

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mta.csv
Type Table, then Shift-Enter. Ctrl-space for more options.

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