Looks very nice. I will definitely be using this in the future.
Alan
On Tue, Dec 18, 2018 at 4:44 AM <boris.sch...@gmail.com> wrote:
> Odd. The exact same code works for me. This is clojure 1.10/oz 1.4, and
> evaluating the whole blob from lighttable.
>
> I had to call (oz/v! line-plot) again to get it to show the figure,
> rather then the opening text. And you can leave out the (oz/start-plot-
> server!). It will start a server if it needs one.
>
> I guess I have a similar workflow as Christopher, and similar needs in
> terms of visualization. I have used vega-lite through vizard and now oz for
> about a year now, after trying so many different visualization packages for
> clojure (Incanter/JFreechart, C2, quil, gyptis, quil/grafica,
> rojure->ggplot2, vizard). Really happy that oz takes vizard further.
> vega/vega-lite works really well with clojure.
>
>
>
> On Tuesday, December 18, 2018 at 10:12:07 AM UTC+1, Juraj Martinka wrote:
>>
>> I'd like to try this but got stuck pretty early:
>>
>> (ns clojure-repl-experiments.visualizations.oz
>> (:require [oz.core :as oz]))
>>
>>
>> (oz/start-plot-server!)
>>
>>
>> (defn group-data [& names]
>> (apply concat (for [n names]
>> (map-indexed (fn [i x] {:x i :y x :col n}) (take 20
>> (repeatedly
>> #(rand-int 100)))))))
>>
>>
>> (def line-plot
>> {:data {:values (group-data "monkey" "slipper" "broom")}
>> :encoding {:x {:field "x"}
>> :y {:field "y"}
>> :color {:field "col" :type "nominal"}}
>> :mark "line"})
>>
>>
>> ;; Render the plot to the
>> (oz/v! line-plot)
>>
>>
>>
>> It has opened a new browser window at http://localhost:10666/ but I see
>> nothing only errors in the JS console:
>> socket.cljs?rel=1502542805393:64 WebSocket connection to
>> 'ws://localhost:3449/figwheel-ws/dev' failed: Error in connection
>> establishment: net::ERR_CONNECTION_REFUSED
>> figwheel$client$socket$open @ socket.cljs?rel=1502542805393:64
>> 10:10:10.089
>>
>> Does it require some special setup (figwheel)?
>>
>>
>>
>>
>> On Monday, 17 December 2018 21:41:36 UTC+1, Christopher Small wrote:
>>>
>>>
>>> Greetings!
>>>
>>> I'm happy to announce today the release of Oz 1.4.0.
>>>
>>> https://github.com/metasoarous/oz
>>>
>>> If you're on the Slack #datascience channel, you may have already caught
>>> wind of some earlier versions. But in the interest of introducing it more
>>> broadly, I'm posting an overview here for those of you who aren't familiar.
>>> If you *are* familiar, you may still wish to scroll down to the bottom
>>> as there are some new features available in the latest release.
>>>
>>>
>>> *Vega & Vega-Lite*
>>>
>>> Oz is based on the fantastic Vega & Vega-Lite data visualization JS
>>> libraries, and so to really understand what Oz has to offer, it's best to
>>> start here. Vega & Vega-Lite are based on the seminal Grammar of Graphics,
>>> an approach to data visualization which emphasizes writing declarative
>>> descriptions of how properties of data should translate to aesthetic
>>> attributes of a visualization. This approach guided the design of the R's
>>> popular ggplot2 library, and has since influenced numerous libraries in
>>> other languages.
>>>
>>> Vega & Vega-Lite take this vision further in two important ways:
>>>
>>> 1. In Vega & Vega-Lite, data visualizations are described using *pure
>>> data*. This makes it more declarative, and confers all the benefits
>>> we know and love about data-driven programming in Clojure. For instance,
>>> you can send a chunk of Vega or Vega-Lite data over the wire from one
>>> program to another effortlessly (as Oz does), and load it up in another
>>> process without having to worry about the security concerns of executing
>>> someone else's code. The bottom line is that Vega & Vega-Lite are
>>> philosophically and technically compatible with "the Clojure way" (IT'S.
>>> JUST. DATA.).
>>> 2. Vega & Vega-Lite take the Grammar of Graphics one step further by
>>> introducing a Grammar of Interaction. You can declaratively describe the
>>> addition of controls (dropdowns, checkboxes, etc) and interactive
>>> properties of the visualization itself (click, hover, etc), and use the
>>> data from these interactions to inform other parts of a visualization.
>>> For
>>> example, you might highlight a set of points in one part of a
>>> visualization, and display summary statistics about that selection in
>>> another. This is facilitated in part by a general purpose dataflow
>>> language
>>> as part of the greater spec.
>>>
>>> Vega itself is highly customizable and flexible, but somewhat verbose
>>> and not suitable for day to day visualization tasks. Vega-Lite steps in as
>>> a somewhat higher level and more automated flavor which itself compiles
>>> down to Vega. I have been using them together for a better part of a year
>>> now, and can say without reservation that they are amazing. For years I've
>>> longed for a ggplot2 from Clojure, and at long last I've found something
>>> that to my surprise has not only matched, but truly surpassed the standard
>>> bearer. In short, I'm sold.
>>>
>>> If you want to get a better sense of Vega, and Vega-Lite in particular,
>>> I'd recommend this great talk from the creators at the Interactive Data Lab
>>> at the University of Washington in Seattle:
>>> https://www.youtube.com/watch?v=9uaHRWj04D4
>>>
>>> If you're interested in a (mostly) more philosophical look at Vega &
>>> Vega-Lite, and their connections to Clojure philosophy, I did a little talk
>>> at a local Clojure meetup which you may find interesting:
>>> https://www.youtube.com/watch?v=hXq5Bb40zZY&t=815s
>>>
>>>
>>> *Oz*
>>>
>>> Oz itself is a very small and focused library, as most of the work falls
>>> on Vega & Vega-Lite. It offers the following features:
>>>
>>> - A REPL API for for pushing vega and vega-lite data to a browser
>>> window over websockets, for REPL-based data science workflows
>>> - Client side vega and vega-lite Reagent components, for more
>>> dynamic usage from ClojureScript apps
>>> - A grammar for composing Vega & Vega-Lite together in the context
>>> of html as hiccup, for document and dashboard generation
>>> - Plot/document publishing/sharing features via GitHub gists, the
>>> IDL's live vega editor <http://vega.github.io/editor>, and the new
>>> http://ozviz.io
>>>
>>> The last two features in particular are where Oz really brings some
>>> interesting value to the table beyond the role of a minimal wrapper. I have
>>> found the ability to create and quickly share visualizations and scientific
>>> documents from the comfort of my favorite text editor and REPL a godsend.
>>> While the first several years of my programming experience were in notebook
>>> environments (Mathematica, MATLAB, Sage, etc), I now find the experience of
>>> writing and executing code from a web application a burden. Part of my goal
>>> with Oz was to create a viable alternative to this workflow, and so far
>>> I've been very pleased. The last piece to this now in place (the
>>> ability to share hiccup+vega documents via http://ozviz.io), I'm
>>> excited to put this work out more broadly and hear what the community
>>> thinks about this approach to the creation and sharing of scientific
>>> documents.
>>>
>>> There are some other updates and improvements which those of you
>>> familiar with Oz may wish to take a look at in the changelog, included
>>> updated Vega* libs, and some smoothing out of the API and UI (
>>> https://github.com/metasoarous/oz/blob/master/CHANGELOG.md). Otherwise,
>>> please see the project README for up to date information on how to use the
>>> library: https://github.com/metasoarous/oz.
>>>
>>>
>>> Thanks for your time!
>>>
>>> Chris
>>>
>>>
>>> --
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