As Integer
时间: 2024-02-11 13:01:51 浏览: 12
以下是将数据转换为整数的方法:
1. 使用as.integer()函数将数据转换为整数:
```R
as.integer('1321') # 输出:1321
```
2. 使用as.integer()函数将实数转换为整数:
```R
as.integer(12.34) # 输出:12
```
请注意,如果数据无法转换为整数,将会返回NA(缺失值)。
相关问题
Function ExtractRBStart(ByVal RIV As Integer) As Integer Dim NPRB As Integer Dim RBStart As Integer NPRB = (RIV \ 2) + 1 RBStart = RIV Mod 2 ExtractRBStart = RBStart End Function Function ExtractNPRB(ByVal RIV As Integer) As Integer Dim NPRB As Integer NPRB = (RIV \ 2) + 1 ExtractNPRB = NPRB End Function,在宏中缺少END SUB
在这段代码中没有使用Sub过程,因此不需要添加`End Sub`。这是一个完整的Excel宏代码示例,可以直接使用:
```excel
FunctionRBStart(ByVal RIV As Integer) As Integer
Dim NPRB As Integer
Dim RBStart As Integer
NPRB = (RIV \ 2) + 1
RBStart = RIV Mod 2
ExtractRBStart = RBStart
End Function
Function ExtractNPRB(ByVal RIV As Integer) As Integer
Dim NPRB As Integer
NPRB = (RIV \ 2) + 1
ExtractNPRB = NPRB
End Function
```
你可以将这段代码粘贴到Excel的宏编辑器中,并在需要的地方调用这两个函数来进行RB起始位置和数量的提取。请确保在调用这些函数时传递正确的参数,并将结果存储在适当的位置。
代码报错:Private Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hWnd As IntPtr, ByVal wMsg As Integer, ByVal wParam As Integer, ByVal lParam As Integer) As Integer Private Const WM_APPCOMMAND As Integer = &H319 Private Const APPCOMMAND_VOLUME_UP As Integer = &HA Private Const APPCOMMAND_VOLUME_DOWN As Integer = &H9 Private Const APPCOMMAND_VOLUME_MUTE As Integer = &H8 Private Sub IncreaseVolume() SendMessage(Me.Handle, WM_APPCOMMAND, &H30292, APPCOMMAND_VOLUME_UP * &H10000) End Sub Private Sub DecreaseVolume() SendMessage(Me.Handle, WM_APPCOMMAND, &H30292, APPCOMMAND_VOLUME_DOWN * &H10000) End Sub Private Sub MuteVolume() SendMessage(Me.Handle, WM_APPCOMMAND, &H30292, APPCOMMAND_VOLUME_MUTE * &H10000) End Sub
这段代码是在使用 SendMessage 函数来发送消息给 Windows 操作系统来控制音量。然而,这段代码存在一些问题:
1. 在 VB.NET 中,需要使用 Declare Function 声明 API 函数,而不是 Private Declare Function。
2. SendMessage 函数需要的参数类型应该为 IntPtr,而不是 Integer。
3. 在 VB.NET 中,使用 &H 前缀来表示十六进制数字。
4. 在调用 SendMessage 函数时,需要将 wParam 和 lParam 合并成一个整数。
因此,修正后的代码应该是这样的:
```vb
Imports System.Runtime.InteropServices
Public Class Form1
Private Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hWnd As IntPtr, ByVal wMsg As Integer, ByVal wParam As IntPtr, ByVal lParam As IntPtr) As IntPtr
Private Const WM_APPCOMMAND As Integer = &H319
Private Const APPCOMMAND_VOLUME_UP As Integer = &HA
Private Const APPCOMMAND_VOLUME_DOWN As Integer = &H9
Private Const APPCOMMAND_VOLUME_MUTE As Integer = &H8
Private Sub IncreaseVolume()
SendMessage(Me.Handle, WM_APPCOMMAND, Me.Handle, APPCOMMAND_VOLUME_UP * &H10000)
End Sub
Private Sub DecreaseVolume()
SendMessage(Me.Handle, WM_APPCOMMAND, Me.Handle, APPCOMMAND_VOLUME_DOWN * &H10000)
End Sub
Private Sub MuteVolume()
SendMessage(Me.Handle, WM_APPCOMMAND, Me.Handle, APPCOMMAND_VOLUME_MUTE * &H10000)
End Sub
End Class
```
注意,在使用 SendMessage 函数时,第一个参数需要传入窗口的句柄,可以使用 Me.Handle 来获取当前窗口的句柄。