R if...else Statement We can also use an optional else statement with an if statement. The syntax of an if...else statement is: if (test_expression) { # body of if statement } else { # body of else statement }
7. 16、向量化的ifelse()函数 在R语言中除了有“if-else"结构,还提供了另一个向量货的版本,ifelse()函数,格式为:ifelse(条件,为TRUE返回向量,为FALSE返回向量) > x <- 1:10 > y <- ifelse(x %% 2 == 0,5,12)#对x值取模运算,偶数返回5,奇数返回12 > y [1] 12 5 12 5 12 5 12 5 1...
print(a % b) # 输出 1 4if-elif-else if是条件判断语句,用于执行某些代码块。 elif(”else if” 的缩写)用来检查其他可能的条件,避免多个独立的if。 else是默认执行的代码块,当所有条件都不满足时执行。 temperature = 30 if temperature < 0: print(“Please put on a thick jacket.”) elif 0 <= ...
salesRFM<-within(salesRFM,{R_S=ifelse(rankR>mean(rankR),2,1)F_S=ifelse(rankF>mean(rankF),2,1)M_S=ifelse(rankM>mean(rankM),2,1)}) 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #客户类型归类: salesRFM<-within(salesRFM,{Custom=NACustom[R_S==2&F_S==2&M_S==2]='...
(b1,type = "response",newdata = fold_test) fold_predict <- ifelse(fold_predict>0.6,"sick","buff") fold_test$predict <- fold_predict c1 <- confusionMatrix(factor(fold_test$predict),fold_test$target) fold_accuracy <- c1$overall[1] #fold_error <- as.numeric(fold_test[,15])-as....
Plotnine is the implementation of the R packageggplot2in Python. It replicates the syntax of R packageggplot2and visualizes the data with the concept of the grammar of graphics. It creates a visualization based on the abstraction of layers. When we are making a bar plot, we will build the...
RDF is a datamodel for objects ("resources") and relations between them, provides a simple semantics for this datamodel, and these datamodels can be represented in an XML syntax. RDF Schema is a vocabulary for describing properties and classes of RDF resources, with a semantics for generalizat...
在某些情况下,您可能希望通过添加else if语句来进一步自定义条件语句。else if 语句位于 if 语句和 else 语句之间。这是代码结构: if (condition1) { expr1 } else if (condition2) { expr2 } else { expr3 } 1. 2. 3. 4. 5. 6. 7.
rt_data$modality <- ifelse(rt_data$modality == "Audio-only", 0, 1) 对于有一个自变量和随机截距(random intercept)但没有随机斜率(non-random slope)的(交叉)参与者(participant)和项目(item)的实验,混合效应模型的基本语法是 lmer(outcome ~ 1 + predictor + (1|participant) + (1|iterm), data...
babel-polyfill //Babel默认只转换新的JavaScript句法(syntax),而不转换新的API,babel-polyfill就是为当前环境提供一个垫片。解决一些浏览器不能识别的语法,比如:Promise cross-env //解决跨平台设置NODE_ENV的问题 css-loader //css 生成 less //css 预处理器less less-loader //css 预处理器less的webpack插件...