摘要： Eclipse -- window -- preferences -- run/debug -- console -- Fixed with console，开启Fixed with console 阅读全文

摘要： $- 当前页可打印的行数,属于Perl格式系统的一部分 $! 根据上下文内容返回错误号或者错误串 $” 列表分隔符 $# 打印数字时默认的数字输出格式 $$ Perl解释器的进程ID $% 当前输出通道的当前页号 $& 与上个格式匹配的字符串 $( 当前进程的组ID $) 当前进程的有效组ID $* 阅读全文

摘要： getopts的使用问题 #!/usr/bin/perl #execute ABC.pl -s 999 -g -t use Getopt::Std; getopts('s:t:g:',\%opts); foreach my $key ( keys %opts){ print $key,"-->;", 阅读全文

摘要： megablast 采用贪婪式算法，速度较一般blast快，多用于数据量大且序列相似性较高的情况。megablast 参数说明./megablast --helpmegablast 2.2.11 arguments: -d Database [String] default = nr -i Query File [File In] -e Expectation value [Real] default = 10.0 -m alignment view options: 0 = pairwise, 1 = query-anchored showing i... 阅读全文

摘要： formatdb is an outdated software tool in molecular bioinformatics to format protein or nucleotide databases for BLAST. It has been replaced by the tool makeblastdb and the NCBI "strongly encourage[s]" users to stop using formatdb.The formatdb.exe program is part of the BLAST release, which 阅读全文

摘要： 根据oracle文档的解释： Cause: The control file change sequence number in the datafile is greater than the number in the control file. This implies that the wrong control file is being used. Note that repea... 阅读全文

摘要： 命令行执行：ppm install padwalker-------------------------------------------------------------C:\Documents and Settings\Administrator>ppm install padwalkerDownloading ActiveState Package Repository packlist...doneUpdating ActiveState Package Repository database...doneSyncing site PPM database with .pac 阅读全文

摘要： 现象： Eclipse IDE for Java Developers Version: Helios Service Release 1，已经安装了epic和padwalker。perl环境装的是activePerl。没有手动设置过系统的参数和Eclipse的参数。 可以正常Run，但是不能Deb 阅读全文

摘要： The Burrows–Wheeler transform (BWT, also called block-sorting compression), is an algorithm used in data compression techniques such as bzip2. It was invented by Michael Burrows and David Wheeler in 1... 阅读全文

摘要： What is Bowtie 2? Bowtie 2 is an ultrafast and memory-efficient tool for aligning sequencing reads to long reference sequences. It is particularly good at aligning reads of about 50 up to 100s or 1,0... 阅读全文