Crate perspective_js

The JavaScript language bindings for Perspective.

JavaScript Examples

A simple example which loads an Apache Arrow and computes a “Group By” operation, returning a new Arrow.

import perspective from "@finos/perspective";

const table = await perspective.table(apache_arrow_data);
const view = await table.view({ group_by: ["CounterParty", "Security"] });
const arrow = await view.to_arrow();

Structs

• Client
  An instance of a Client is a unique connection to a single perspective_server::Server, whether locally in-memory or remote over some transport like a WebSocket.
• JsOnUpdateOptions
• JsTableInitData
• JsUpdateOptions
• JsViewConfig
• JsViewWindow
• Table
  Table is Perspective’s columnar data frame, analogous to a Pandas DataFrame or Apache Arrow, supporting append & in-place updates, removal by index, and update notifications.
• View
  The View struct is Perspective’s query and serialization interface. It represents a query on the Table’s dataset and is always created from an existing Table instance via the Table::view method. .