MEGAN重大更新-却坑苦了我
先来一首凉凉表达一下我的心情：
本次megan在十月份进行了重大更新，本来挺好的事，看看更新内容却傻眼了，数据库做了重大调整。之前物种和功能好几个数据库全部换成这一个数据库。这个大小不到1G的数据库包含了全部功能和物种信息。只是在服务器上我安装megan6.18失败。conda源最新的也就是6.12。新的数据库，却只能使用旧软件。原先数据库下载链接全部失效，这让我如何是好。有朋友奉献一个下载链接我讲喜不自胜。
megan这几年更新实在是频繁，从命令到数据库，一年更新好几个版本，好多旧的命令都不能实现了，新的命令需要不断学习。本次重大更新，想必调取数据库的命令也发生变化，却没有看到介绍。加上最新版安装失败。旧版本数据库无法下载。很是失败的一天。
附本次megan更新内容！大家注意跳坑
--- Release notes MEGAN6 /V6_18_0: ---
- Major update
- Mapping of reference accessions to taxonomy and functional classifications is now performed using a single unified lookup file, called megan-map-Oct2019.db.
- The Ultimate Edition uses mapping file megan-map-Oct2019-ue.db
- New mapping code faster than previous approach
- New mapping file smaller than previous mapping files (including smaller download, less than 1GB in total)
- These mapping files are sqlite databases and so can be interactively viewed and modified by other program such as sqlite3
- These mappings reference only the first accession in each NCBI-nr header line
- We will later provide a tool for extracting mappings to other accessions (that appear within header lines)
- Fixed a number of minor bugs
- Code improvements using automated inspection routines
- NCBI taxonomy updated to October 2019
- eggNOG and InterPro2Go updated to October 2019
- software repository moved to software-ab.informatik.uni-tuebingen.de
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