There are various library for manipulating image,one of them is GD library.
In this post i quickly show how to resize an image or generate thumbnail of image using GD2.
Basic steps as follows
- First import image
- Resize an import image to desired size
- Export Image to desired file
above code is extracted from rchart.
Rchart is ruby port of the slick pChart charting library.
Using Rchart we can develop various format of chart.
- Line Chart
- Cubic Curve Chart
- Bar Chart
- Pie Chart
- Filled Line Chart
- Stacked Bar Chart
And many more ,You can checkout examples of rchart.Some of examples are listed below.
Rchart:- Stacked Bar Chart
Rchart - 3D Pie Chart
Rchart -Line Chart
Rchart gem require ruby-gd gem and GD library.
To install rchart gem on ubuntu following packages needed.
- sudo apt-get install libgd-ruby
- sudo apt-get install libpng-dev
- sudo apt-get install libgd2-xpm-dev
- sudo gem install ruby-gd
After installing rchart,You can checkout examples of rchart.
More examples of rchart is available on http://amardaxini.github.com/rchart/.
Online Documentation is available on http://rdoc.info/gems/rchart/1.1.1/frames
If you have found any difficulties to install or running rchart,then comment on this post or write issues on github.