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所以我已经将multcompmultcompview包安装到了 RStudio;但是,当我使用 cld 函数时,我不断收到此错误

Error in UseMethod("cld") : 
no applicable method for 'cld' applied to an object of class "data.frame"

我的数据如下:

Group1 <- c(12.4,10.7,11.9,11.0,12.4,12.3,13.0,12.5,11.2,11.1)
Group2 <- c(8.1,11.5,11.3,8.7,12.7,10.7,9.6,11.3,11.1,13.7)
Group3 <- c(8.5,11.6,10.2,10.9,9.0,9.6,9.9,11.3,10.5,14.2)
Group4 <- c(8.7,9.3,8.2,8.3,9.0,9.4,9.2,12.2,8.5,12.9)
Group5 <- c(12.7,13.2,11.8,11.9,12.2,11.2,13.7,11.8,11.5,9.7)

Combined_Groups<-data.frame(cbind(Group1,Group2,Group3,Group4,Group5))
Combined_Groups #shows spreadsheet like results
summary(Combined_Groups) #min, median, mean, max

Stacked_Groups <- stack(Combined_Groups)
Stacked_Groups #shows the table Stacked_Groups

Anova_Results<-aov(values~ind,data=Stacked_Groups)
summary(Anova_Results) #shows Anova_Results

qf (.95, df1=4, df2=45) #this gives you the critical mean of the F 
distribution

t(apply(Combined_Groups, 2, function(x) c(mean=mean(x), sd=sd(x), 
n=length(x)))) #table of mean,SD,n

tk <-TukeyHSD(Anova_Results)
tk

cld(Combined_Groups, sort = TRUE, by = NULL, Letters = 
"ABCDEFGHIJKLMNOPQRSTUVWXYZ",alpha = 0.05)

cld 的正确格式应该是什么?我希望结果从最低到最高均值,然后在字母下方进行成对比较。

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1 回答 1

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cldmultcomp包装中。Reading?cld给出了一个使用aov. 它使用glht,不是TukeyHSD。以下是它在您的示例中的工作方式:

library(multcomp)
ph <- glht(Anova_Results, linfct = mcp(ind = "Tukey"))
cld(ph)

给出:

Group1 Group2 Group3 Group4 Group5 
   "b"   "ab"   "ab"    "a"    "b"
于 2017-10-30T12:27:01.657 回答