sum(x,y,z,na.rm=FALSE)——x+y+z,na.rm为TURE可以忽略掉na值数据 sum(x>4)——统计向量x中数值大于4的个数 rep(“LOVE!”,<times>)——重复times次,rep(1:3,c(1,2,3))表示1个1,2个2,3个3组成的序列 sqrt()——开平方函数 2^2 和 **——“^”幂运算 abs()——绝对值函数 '%%'—...
sum(x,y,z,na.rm=FALSE)——x+y+z,na.rm为TURE可以忽略掉na值数据 sum(x>4)——统计向量x中数值大于4的个数 rep(“LOVE!”,<times>)——重复times次,rep(1:3,c(1,2,3))表示1个1,2个2,3个3组成的序列 sqrt()——开平方函数 2^2 和 **——“^”幂运算 abs()——绝对值函数 '%%'—...
hwRrmProfileName OCTET STRING(1–35) not-accessible This object indicates the name of the RRM profile. It is the index of the table. This object is implemented as defined in the corresponding MIB file. 1.3.6.1.4.1.2011.6.139.11.1.18.1.2 hwRrmAutoChannelSelectSwitch INTEGER{disable(1...
rcauchy(n, location=0, scale=1)Cauchy分布 rbeta(n, shape1, shape2)β分布 rt(n, df)t分布 rf(n, df1, df2)F分布 rchisq(n, df)χ 2 分布 rbinom(n, size, prob)二项分布 rgeom(n, prob)几何分布 rhyper(nn, m, n, k)超几何分布 rlogis(n, location=0, scale=1)logistic...
Geocode emails, based on domain IP address. Contribute to cengel/r_IPgeocode development by creating an account on GitHub.
The FSC curves were computed between the 3D reconstructions and the reference map by the “RF 3” command, and the CCC value was calculated by the “CC C” command in SPIDER81,82,83. The frequency at which the FSC curve falls to a value of 0.5 was used to represent the resolution of...
(rollmean_10_lag,na.rm=T), sd=sd(rollmean_10_lag,na.rm=T)) ) ## dates_changed<-x1%>%filter(probability>=0.7)%>%select(date)%>%rbind( x2%>%filter(probability2>=0.7)%>%select(date) )%>%rbind( x3%>%filter(probability2>=0.7)%>%select(date) )%>%distinct()%>% arrange(date...
rm("+")#消除恶作剧的+运算 5+2 [1] 7 ps:特殊函数的帮助文档 ?“+” #双引号 ?'+’#单引号 ?·+·#反单引号 6.6函数(2) 1.不一样的plot x <- seq(1,100,by=10) y <- 2*x+10 xy <- cbind(x,y) class(xy) #矩阵 [1] "matrix" "array" ...
+rf +reset +relaunch +quake +qs +pwc +smtps +imaps +pubs +ptc +proteus +prep +premier +postoffice +pomoc +pol +points +poetry +plugin +picasa +pic2 +philadelphia +peru +personals +pbs +pathology +other +orlando +olx +oes +obgyn +o365 +nimbus +newmedia +murmansk +msm +msk +ms2...
假设有MyData数据框,其中变量为x1,x2. 现创建名为sumx和meanx的新变量,分别存储变量x1与x2的加和与均值。 MyData<-data.frame(x1 = c(2, 2, 6, 4), x2 = c(3, 4, 2, 8)) #方法1 MyData$sumx <- MyData$x1 + MyData$x2