我正在对德国信用数据进行分析，但由于我已经安装了ROCR软件包，我遇到了一个错误，我无法纠正该错误。下面是使用ROCR的代码：
#load library
library(ROCR)
#score test data set
test$score <- predict(m,type='response',test)
pred <- prediction(test$score,test$good_bad)
perf <- performance(pred,"tpr","fpr")
plot(perf)
现在，运行后pred，我收到以下错误：
>pred <- prediction(test$score,test$Good_Bad)
Error: could not find function "prediction".
当我尝试执行以下行时也会发生这种情况：
>perf <- performance(pred,"tpr","fpr")
Error: could not find function "performance"
I had the same issue... If you look closely, it says:
Loading required package: gplots
Error in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]) :
there is no package called ‘KernSmooth’
In addition: Warning messages:
1: package ‘ROCR’ was built under R version 3.0.3
2: package ‘gplots’ was built under R version 3.0.3
Error: package ‘gplots’ could not be loaded
I simply installed the install.packages("gplots") and then loaded the library and it loaded and found the function without any issues.
Hope this helps
我也有同样的问题，尽管已经安装了“gplots”并且显然是最新的，但我只是通过命令 install.packages("gplots") 重新安装了它，它似乎工作正常。