小编Coo*_*ngs的帖子

我想知道如何从R中的表中获取特定行.例如,

> a <- c(13,13, 
    14,14,14,14,14,14,
    15,15,15,15,15,15,
    16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
    17,17,17,17,17,17,17,
    18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,
    19,19,19,19,19,19,19,19,19,19,19,
    20,20,20,20,20,20,20,20,20,
    21,21,21,21,21,21,21,21,21,21,21,
    22,22,22,22,22,22,22,22,22,
    23,23,23,24,25,25,27)
> table(a)
a
13 14 15 16 17 18 19 20 21 22 23 24 25 27 
2  6  6 15  7 17 11  9 11  9  3  1  2  1 

如何提取表格的最后一行？

我已经创建了一个矩阵列表,现在我想在所有矩阵中得到行的最大值,我该如何得到它们？

这是列表的代码:

i <- 1
tryList <- list()
treeList <- list()
accList <- list()

for(t_mtry in 1:40){
  for(t_ntree in 20:300{
    rf <- randomForest(class ~., data=training, mtry=t_mtry, ntree=t_ntree)
    tbl <- table(predicted = predict(rf,evalSet,type="class"),actual=evalSet$class)

    #get the accuracy of the classification as a list
    retVal <- accuracy(tbl)

    tryList <- c(tryList,t_mtry)
    treeList <- c(treeList,t_ntree)
    accList <- c(accList,mean(retVal))
   }
   matrixList[[i]] <- matrix(c(tryList,treeList,accList),length(accList)
   i <- i + 1
   tryList <- list()
   treeList <- list()
   accList <- list()
 }

现在我想要从每个矩阵的accList的最大值.如果我有一个矩阵我使用:

lapply(matrix,max)
max(unlist(matrix[,3]))

但是如何将它与列表一起使用？

我正在尝试为我们的新项目设置我们的Hundson Server for CI.一切运行正常,构建项目,单元测试和FxCop检查运行.但是当我尝试使用StyleCop检查代码时会发生错误.第一:我们使用MS VS 2010在C#中开发,在Hudson Server上安装了.Net 4.0和Windows SDK 7.1.

现在我已将StyleCop.Targets添加到我的SVN并将.cproj文件链接到该文件.如果我在VS2010中构建,除了StyleCop警告之外,每个都很好,但如果Hundson Server尝试构建项目,则会发生以下错误:

error MSB4062: The "StyleCopTask" task could not be loaded from the assembly 
C:\Program Files (x86)\MSBuild\..\StyleCop 4.7\StyleCop.dll. Could not load file or
assembly 'Microsoft.Build.Utilities.v3.5, Version=3.5.0.0, Culture=neutral, 
PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot 
find the file specified. Confirm that the <UsingTask> declaration is correct, 
that the assembly and all its dependencies are available, and that the task 
contains a public class that implements Microsoft.Build.Framework.ITask. 

StyleCop.dll位于Hundson Server的路径中,有人可以告诉我我做错了什么吗？

我正在使用C＃开发项目。现在，我已经设置了Hudson服务器，并且在服务器上安装了.Net 4 Framework和Windows SDK 7.1。

该项目成功构建，但是当我使用以下命令启动FxCop时：

"C:\Program Files (x86)\Microsoft FxCop 1.35\fxcopcmd.exe" /file:CommonServiceTool\bin\Release /out:fxcop-result.xml

它加载所有.dll规则文件，然后发生以下异常：

Using system files at: C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319.
Could not resolve reference to PresentationFramework.
Could not resolve reference to PresentationCore.
Could not resolve reference to WindowsBase.
12 exceptions occurred while loading Project1.
   00) Could not resolve type reference: [PresentationFramework]System.Windows.StartupEventArgs.
   01) Could not resolve type reference: [PresentationFramework]System.Windows.Window.
   02) Could not resolve type reference: [PresentationFramework]System.Windows.Controls.HeaderedContentControl.
   03) Could not resolve type reference: [PresentationCore]System.Windows.Input.ICommand.
   04) Could not resolve member reference: System.Windows.ThemeInfoAttribute::.ctor.

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