Fix #2582: polymer persistence length example fix

[ss62171]

Fixes #2582

Changes made in this Pull Request:

lp variable is renamed to persistence length and missing * is added after H 'not name O* H'.

PR Checklist

• Tests?
• Docs?
• CHANGELOG updated?
• Issue raised/referenced?

[orbeckst]

Thanks for the contribution.

• Please add the issue number polymer persistence length example fails #2582 in the "Fix #" line of your issue so that PR and issue are linked.
• Did you run the example? Can you please show some evidence that this works, e.g., run in a jupyter notebook and show a screenshot of the executed code and the resulting plot. (Normally we would have tests but the doc examples are not explicitly tested)

Thanks.

[codecov]

Codecov Report

Merging #2589 into develop will not change coverage by %.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #2589   +/-   ##
========================================
  Coverage    90.57%   90.57%           
========================================
  Files          173      173           
  Lines        23383    23383           
  Branches      3038     3038           
========================================
  Hits         21180    21180           
  Misses        1585     1585           
  Partials       618      618           

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[ss62171]

@orbeckst is this fine?

[orbeckst]

This is looking good. Can you show the plot to?

plt.savefig("persistence.jpg")

and attach as a comment.

[ss62171]

Here is the plot.

[orbeckst]

Why are there multiple plots? Perhaps do plt.clf() before plotting.

[ss62171]

I didn't know about plt.clf before. Here is the plot

[orbeckst]

Looking good!

[orbeckst]

Almost done. As you are new contributor to the code base:

• add yourself to AUTHORS
• add an entry "fixed example docs for polymer persistence length (polymer persistence length example fails #2582)" under Fixes to CHANGELOG (and don't forget to add your GitHub handle to author list for the next release)

[ss62171]

@orbeckst I couldn't figure out how to add my github handle to author list.

[orbeckst]

Have a look at what @richardjgowers did for you do you know how to do it in the future.

[ss62171]

Yes i do understand it

[orbeckst]

@ss62171 congratulations on your first contribution! Thank you!

[ss62171]

It was really fun to work on this :)