GitHub user zjffdu opened a pull request:
https://github.com/apache/zeppelin/pull/2730
ZEPPELIN-3166. R plotting resolution and image width is not proper
### What is this PR for?
Change the resolution and image width, because the previous default value
is not proper.
By adding `fig.retina = 2` for high resolution. And use `40%` as default
image width.
### What type of PR is it?
[ Improvement ]
### Todos
* [ ] - Task
### What is the Jira issue?
* https://issues.apache.org/jira/browse/ZEPPELIN-3166
### How should this be tested?
* Manually verfifed
### Screenshots (if appropriate)
Before

After

### Questions:
* Does the licenses files need update?
* Is there breaking changes for older versions?
* Does this needs documentation?
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zjffdu/zeppelin ZEPPELIN-3166
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/zeppelin/pull/2730.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2730
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commit a8c092f17f62ffac5ac16c131966fa89964278dd
Author: Jeff Zhang <zjffdu@...>
Date: 2018-01-15T06:53:54Z
ZEPPELIN-3166. R plotting resolution and image width is not proper
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