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https://issues.apache.org/jira/browse/SOLR-13088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16727120#comment-16727120
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Joel Bernstein commented on SOLR-13088:
---------------------------------------
Full power of Math Expressions inside of Zeppelin. zplot formats the output so
Zeppelin can plot. Here is a sample expression:
{code:java}
let(r=random(collection1, q="*:*", fl="response_d, filesize_d", rows="500"),
x=col(r, filesize_d),
y=col(r, response_d),
s=pairSort(x,y),
zplot(x=rowAt(s, 0), y=rowAt(s,1))){code}
The example above takes a random sample, extracts to vectors, pair sorts the
vectors and then formats the vectors for output with zplot. I'll attach a
screenshot of the result.
> Add zplot Stream Evaluator to plot math expressions in Apache Zeppelin
> ----------------------------------------------------------------------
>
> Key: SOLR-13088
> URL: https://issues.apache.org/jira/browse/SOLR-13088
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
> Priority: Major
> Attachments: SOLR-13088.patch, Screen Shot 2018-12-21 at 3.01.55
> PM.png, Screen Shot 2018-12-21 at 5.53.18 PM.png
>
>
> The Solr Zeppelin interpreter ([https://github.com/lucidworks/zeppelin-solr])
> can already execute Streaming Expressions and therefore Math Expressions.
> The *zplot* function will export the results of Solr Math Expressions in a
> format the Solr Zeppelin interpreter can work with. This will allow Math
> Expressions to be plotted by *Apache Zeppelin.*
> Sample syntax:
> {code:java}
> let(a=array(1,2,3),
> b=array(4,5,6),
> zplot(line1=a, line2=b, linec=array(7,8,9))){code}
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