# Adding a "spectrogram" poll type

**URL:** <https://meta.discourse.org/t/adding-a-spectrogram-poll-type/29828>\
**Category:** Feature\
**Created:** [June 9, 2015, 10:49pm UTC](https://meta.discourse.org/t/adding-a-spectrogram-poll-type/29828 "2015-06-09T22:49:42Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![lidel](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/lidel/32/115991_2.png) [@lidel](https://meta.discourse.org/u/lidel)\
**Post date:** [June 23, 2015, 8:00am UTC](https://meta.discourse.org/t/adding-a-spectrogram-poll-type/29828/10 "2015-06-23T08:00:31Z")

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Two ideas on top on that:

> [@jqnatividad](#):
>
> use ImageMagick thru rMagick to render the spectrogram as an SVG.

If backend provides a JSON with data points, the graph could be rendered client-side using one of JS graphing libraries: [http://www.jsgraphs.com](http://www.jsgraphs.com)

> [@jqnatividad](#):
>
> users can show how votes changed over time using animated GIF

Draggable slider that represents the arrow of time would be better 😊

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