Thursday, December 8, 2011

Wednesday, April 22, 2009

Visulization of correlation matrix 2

The plot.corr() function was updated, now it can
1. Add colorkey and text labels more flexible.
2. Reorder the variables using PCA or hierarchical clustering methods.
3. Excellent in details.
4. Other.

What's more, I found a new method to display correlation matricex, using squares with different areas and colors .

See also here . Get corrplot package here.

Tuesday, March 24, 2009

Comparison of different circle graphs

See in my Picasa here and get corrplot package here. Thanks Bob O'Hara's advice:)

I found people's tastes differ, so input parameter col (fill color) and bg (background color) was added in new edition. What is more, now you can order your variables using PCA (order=TRUE) to get a better impression.

Sunday, March 22, 2009

Play Sliding Puzzles on R

The code was shared on my google docs. See it here.