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2019-06-10-v0.3.0-release.md

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0.3.0 Release
Andrew Stein

Perspective 0.3.0 is out now, thanks to the tireless effots of the Perspective Contributors! With this release comes the standard new-release Features, APIs, and Fixes; more importantly, it also features - a new home!

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@jpmorganchase/perspective is now @finos/perspective as Perspective moves to the Fintech Open Source Foundation. The project Github, Gitter and Travis CI have moved as well.

... of course, the Features, Fixes and APIs are really important too. So much so that they have their own section.


D3FC Plugin

An entirely new charting plugin based on D3FC, with new chart types as well as all your old favorites. @finos/perspective-viewer-d3fc is completely OSS, and fully replaces @finos/perspective-viewer-highcharts.


Featuring new charts like Candlestick, as well as new zoom interactions, resizable and repositionable legends, multiple Y-axes, and more!


Data

Perspective now supports full streaming via Apache Arrow. Load your data into a perspective instance on the server via node.js, and stream state & updates via Apache Arrow to a perspective instance in the browser, without ever converting touching JSON.

CPU time and memory usage improvements to reading, querying and writing performance have been made, as well as a new scheduler with substantially better overall data throughput.


With the new perspective-cli command-line tool, encode an Arrow from a CSV or even host a simple Perspective HTTP/WebSocket server.


UX

<perspective-viewer> now emits interaction events for all plugins types, which can be hooked wired together with other <perspective-viewer>s to create complex cross-filtered dashboards.


New copy, download, reset actions available via an options toolbar, and flatten quickly withshift-click. Render warnings prevent huge visualizations from unintentionally overwhelming the browser. Smart category filters, column sorting, and more!


  • New APIs

    • @finos/perspective-viewer-d3fc D3FC plugin - a new comprehensive OSS charting replacement.
    • @finos/perspective-cli A handy perspective CLI tool for manipulating and inspecting data.
    • @finos/perspective-webpack-plugin module for building Webpack applications containing perspective.
    • @finos/perspective-phosphor PhosphorJS component.
    • perspective-click events (for cross-filtering).
    • to_arrow() methods has been added to view().
    • replace(), clear(), get_config(), methods have been added to table().
    • copy(), download(), reset(), flush(), styleElement() methods have been added to <perspective-viewer>
    • on_update() now optionally provides modified rows as an Apache Arrow encoded ArrayBuffer.
    • New CSS custom-style options for all plugin types, including for @finos/persiect-veivewer-d3fc.
    • date type, in addition to existing datetime.
    • Column sorting directions "col asc", "col desc", "col abs asc", "col abs desc".

  • Structural improvements

    • Shadow DOM
    • Windows build support