Not an expert. So, not an expert's expert opinion. Having read several of the typical chirpy simplistic reviews of charts availabe as plugins for WP, and having elcited many potentials with the search term "chart", I was at first happy to have what appear to be an abundence of choices.
So I browsed a bit, pick a likely candidate, and it was not very satisfactory, I tried again, and again and then decided to go through them all systmatically in the hopes of finding one that would meet my needs.
My Perceived needs
4/17/15 NOTHING HAPPENED. Was not able to create a chart in WP 4.1.1.
Create amazing HTML5 charts easily in WordPress. A flexible and lightweight WordPress chart plugin including 6 customizable chart types.
SLOW!!!!! Took forever to open the website, just to look at it. The how to get started was nice, quick, worked. I type in 4 pieces of date to test the chart, had bit of a tussle getting it to copy, - could have been my bad; the took at least 2 minutes on the clock to render in my site. That is once I noticed it was going slowly, I look up at the time on screen - 7:09. The time was 7:11 when it finally rendered. This is a crazy wait time for an image.
The are free and premium version. Free comes with advertising - which I guess is the diagonal banner on the corner of the chart. Pretty inoffensive. If the slowness turness out to be a fluke, and there are ways to customize the chart, this would be worth paying something for.
A great tool for adding charts and graphs to your Wordpress website.
Unlimited chart generate plugin .
Allows to easily add interactive charts and maps using amCharts libraries.
Build data visualizations in Wordpress. Use Factmint Charts to render a CSV table of data as a pie chart, line chart, scatter graph, etc...
Create interactive charts using HTML5 canvas, Supports 6 types of charts, Creat at backend and easily add in your post
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Create dynamic web charts from excel files with a simple drag & drop. Business intelligence charts on your excel data in a couple of clicks!
Real Estate Chart of the Day publishes relevant real estate- and mortgage-related charts to your blog.
Allows you to insert a Google Visualisation chart by clicking button in TinyMCE and entering the data.
Shows your server space (free and used) as a funky Pie Chart in your backend. It also shows a percentage bar in your WordPress dahsboard.
WooCommerce Availability Charts adds an nice chart below your add-to-cart button with the available variations and the number in stock.
A plugin for automatically generating color dashboard pie and trend charts from Contact Forms DB and Contact Form 7 forms activity.
Display 3 Generations of your Family on one page with this fully administrable and functional pedigree chart.
This is a custom made plugin for london coin to update there gold silver ration stats. someone else may find it usefull but i doubt it.
Does little else but load the core Open Flash Chart PHP library for any Plugin that wants to utilize it.
This plugin gives you making QR Code for your article permalink with Google Chart request in EASY. You are able to write shortcode like [qrcode-gc alr
 
      
      Gibt Google Trends Graphen per Shortcode aus, zudem kann es die Top-Suchanfragen bei Google in einem Widget oder per Shortcode ausgeben.