这期是关于R中的loop function(循环函数)中的apply族函数的笔记。当你想要对一个或一组对象执行循环时,使用循环函数可以用很短的语句来执行大量的工作。 目录 lapply与sapply apply mapply tapply 念碎碎 lapply与sapply > str(lapply) function (X, FUN, ...) 第一个参数X为目标list,第二个参数FUN为一个函...
split本身不是个loop function,但他可以通过factor或者一系列factors,对vector、list 或者data frame进行分割 分割list #例 x <- c(rnorm(10),runif(10),rnorm(10,1)) f <- gl(3,10) split(x,f) 把split和lapply结合到一起使用,和直接用tapply效果一样,tapply更精简一些 #下面这两种写法得到的结果一样...
lapply: Loop over a list and evaluate a function on each elementsapply: Same as lapply but try to simplify the result apply: Apply a function over the margins of an array tapply: Apply a function over subsets of a vector mapply: Multivariate version of lapply An auxiliary function split is...
3. Santos-Pereira,J. M. & Aguilera, A. R loops: new modulators of genome dynamics andfunction.Nat Rev Genet16, 583-597, doi:10.1038/nrg3961(2015). 4. Richard,P. & Manley, J. L. R Loops and Links to Human Disease.J Mol ...
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2. T. Misteli, The Self-Organizing Genome: Principles of Genome Architecture and Function. Cell 183, 28-45 (2020). 3. S. Yatskevich, J. Rhodes, K. Nasmyth, Organization of chromosomal DNA by SMC complexes. Annu....
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for(iin1:5){# for-loop with breakif(i==4){break}print(paste("This is step", i))} Figure 2: for-loop with break Function. As shown in Figure 2, the loop stops (or“breaks”) when our running index i is equal to the value 4. For that reason, R returns only three sentences...
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Integrated lncRNA function upon genomic and epigenomic regulation 2022, Molecular Cell Citation Excerpt : Many lncRNAs form R-loops in cis, with local biological impact; for instance, the TCF21 antisense lncRNA TARID forms a loop at the TCF21 promoter that induces TCF21 transcription (Arab et ...