Faculty at CMU (@cmudig) and researcher at @apple.
Published
Edited
Apr 29, 2021
2 forks
8 stars
arrow = (await require(`arrow-wasm@${version}`))({
importHook: (file) => `https://cdn.jsdelivr.net/npm/arrow-wasm@${version}/dist/${file}`
})
// get arrow file as Uint8Array
contents = {
const response = await fetch(url);
const data = await response.arrayBuffer();
return new Uint8Array(data);
}
// Create a table from IPC format.
table = arrow.Table.from(contents)
// Serialize a table back into the IPC format.
table.serialize()
table.schema.toJSON()
batch = table.recordBatch(0)
batch.numRows
vec = batch.column(1).asFloat32Vector()
vec.sum()
vec.toArray()
vec.view()
{
const raw = vec.toRaw();
return {
array: raw.array,
schema: raw.schema
};
}
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
