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RSS订阅原创 R如何输出001,002,003等序号/编号？
需求R默认带文本的编号不是按数字来排序的，这会对数据排序造成一定影响。如paste0("sample",1:10)在列中排序不是按1-100，而是按ASCII排序。> sort(paste0("sample",1:10)) [1] "sample1" "sample10" "sample2" "sample3" "sample4" "sample5"  
2022-10-17 21:16:26
1135
原创 使用transanno制作不同基因组版本坐标映射的chain 文件？
不同基因组版本的位置（坐标）对应关系，在数据分析环节经常用到。位置对应关系通常通过比对来获取，而信息一般存储在chain文件中。对于人类、小鼠等模式生物而言，UCSC已经提供了不同版本的chain文件。对于非模式生物，往往需要先自己制作chian文件，再通过ncbi的remap，UCSC的lifeover和crossmap等工具进行坐标转换。UCSC官网也提供了制作chain文件的方法。但需要parasol集群环境（需要root）。这一步的设置往往难倒了不少人，尤其是ssh localhost。最
2022-09-17 20:42:41
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illumina广告genomic-selection-in-agriculture.pdf
illumina广告genomic-selection-in-agriculture.pdf
2021-01-20
R语言数据科学
This is the website for “R for Data Science”. This book will teach you how to do data science with R: You’ll learn how to get your data into R, get it into the most useful structure, transform it, visualise it and model it. In this book, you will find a practicum of skills for data science. Just as a chemist learns how to clean test tubes and stock a lab, you’ll learn how to clean data and draw plots—and many other things besides. These are the skills that allow data science to happen, and here you will find the best practices for doing each of these things with R. You’ll learn how to use the grammar of graphics, literate programming, and reproducible research to save time. You’ll also learn how to manage cognitive resources to facilitate discoveries when wrangling, visualising, and exploring data.
2018-10-24
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