捡芝麻拾谷子

I finally received my ggplot2 book and started my learning process of this "new" package. I will keep adding some tips here, so I ...

Continue learning Python after thanksgiving breaks. Some notes about flow control: * It's very interesting to see that python has an if-...

After searching for a good tutorial for python beginners, I found this one here . In that 118 pages pdf file, I went through the first 20 ve...

I have been thinking about opening a blog of my own for a long time. Before this one, I have been the "chief editor" of my 2 year ...