1.生成矩阵:matrix() > a<-matrix(data = 1:16,nrow = 4) > a [,1] [,2] [,3] [,4] [1,] 1 5 9 13 [2,] 2 6 10 14 [3,] 3 7 11 15 [4,] 4 8 12 16 2.矩阵加法:+ - > a+a [,1] [,2] [,3] [,4] [1,] 2 10 18 26 [2,] 4 12 20 28 [3,] 6 14...
创建矩阵:matrix(data=NA,nrow=1,ncol=1,byrow=F,dimnames=NULL) 注:data一般用向量形式给出,通过byrow选择按照行or列填充,nrow,ncol指定矩阵的行数和列数,dimnames是一个列表list(行名向量,列名向量),指定矩阵的行名和列名。 矩阵行操作:rownames(x)---获取矩阵x的行名;rownames(x)=行名向量---设置矩...
> makecov <- function(rho,n){ m<-matrix(nrow = n,ncol = n) m<-ifelse(row(m)==col(m),1,rho) return(m) } > makecov(0.2,3) [,1] [,2] [,3] [1,] 1.0 0.2 0.2 [2,] 0.2 1.0 0.2 [3,] 0.2 0.2 1.0 > 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.3、对矩阵的行...
matrix()函数是R语言中创建矩阵的基本函数 使用语法如下: matrix(data = NA, nrow =1, ncol =1, byrow =FALSE, dimnames =NULL) 参数解释: data:可输入所创建矩阵所需的向量,可以为list或expression。 nrow : 所需要创建的行数。 ncol: 所需要创建的列数。 byrow: ...
remember when i make remember your educati remember the best lov remembered something remembered what rememberin what we ha remembering our elder remembering the past remembers human remembers us oh remembrance of grace remembrance of love remembrance of things reminder advertising reminding and warning ...
resulting matrix resulting text result meaning result of referral results of battle vic results of the speaki result state resume a meat diet resume a session resume publication resumption retrieval resumptive resumptive pronoun resurgence reversion resurgent reviviscent resurvey resuscitable retained object...
makecov<-function(rho,n){m<-matrix(nrow=n,ncol=n)m<-ifelse(row(m)==col(m),1,rho)return(m)}makecov(0.3,4)# [,1] [,2] [,3] [,4]# [1,] 1.0 0.3 0.3 0.3# [2,] 0.3 1.0 0.3 0.3# [3,] 0.3 0.3 1.0 0.3# [4,] 0.3 0.3 0.3 1.0 ...
A version of a build that has been tested and is ready for release. report Information produced from the metrics warehouse of Visual Studio Team Foundation. request HTTP requests that make up a Web test and are displayed in the Web Test Editor as a tree structure. request tree The tree of...
1.R包安装 R包理解为多个函数打包存放,包含函数、数据、帮助文件、描述文件 找所有R包使用的规律 生物信息学R包的三个来源 代码语言:r 复制 install.packages("tidyr")#CRAN网站 代码语言:r 复制 install.packages('BiocManager')#Bioconductor网站BiocManager::install("limma") ...
案例来源:http://flowingdata.com/2010/01/21/how-to-make-a-heatmap-a-quick-and-easy-solution/ 注意:(1)#后面一行的代码都不被执行,因此可以用来做标注;(2)在数据整理过程中,如果你好奇数据整理后究竟发生了什么变化,只需要键入相应的数据框或矩阵名,比如“nba”或“nba_matrix”,就可以查看变化;(3)热...