去年ubuntu下apt-get了R-3.0.2, 用了没多久就发现了system命令有问题，通常情况下调用系统命令是正常的，但是我调用bowtie的时候，就会报错： Warning: Could not open read file "/tmp/8156.inpipe1" for reading; skipping... Read More: 2553 Words Totally

去年ubuntu下apt-get了R-3.0.2, 用了没多久就发现了system命令有问题，通常情况下调用系统命令是正常的，但是我调用bowtie的时候，就会报错： Warning: Could not open read file "/tmp/8156.inpipe1" for reading; skipping... Read More: 2553 Words Totally

ChIPpeakAnno WAS the only one R package for ChIP peak annotation. I used it for annotating peak in my recent study. I found it does not consider the strand information of genes. I reported the bug to the authors, but they are reluctant to change. Read More: 2903 Words Totally

Consider the following "magic" 3-gon ring, filled with the numbers 1 to 6, and each line adding to nine. Working clockwise, and starting from the group of three with the numerically lowest external node (4,3,2 in this example), each solution can be described uniquely. For example, the above solution can be described by the...

I found wp-codebox could highlight R code two years ago. This plugin is based on GeSHi to highlight source code internally. Now there are many ways to highlight R syntax in the website. Pretty-R provided by Inside-R is a popular tool in the community. Read more »

The cube, 41063625 (3453), can be permuted to produce two other cubes: 56623104 (3843) and 66430125 (4053). In fact, 41063625 is the smallest cube which has exactly three permutations of its digits which are also cube.Find the smallest cube for which exactly five permutations of its digits are cube. Read...

Triangle, square, pentagonal, hexagonal, heptagonal, and octagonal numbers are all figurate (polygonal) numbers and are generated by the following formulae: Triangle P3,n=n(n+1)/2 1, 3, 6, 10, 15, ... Square P4,n=n2 ...

The square root of 2 can be written as an infinite continued fraction. \( \sqrt{2} = 1+\frac{1}{2+\frac{1}{2+\frac{1}{2+\frac{1}{2+?}}}} \) \sqrt{2} = 1+\frac{1}{2+\frac{1}{2+\frac{1}{2+\frac{1}{2+?}}}} The infinite continued fraction can be written, √2 = , (2) indicates that 2 repeats ad infinitum. In a similar way, √23 = . Read More: 1030 Words Totally