我正在尝试制作一个小型GUI,以便其他人更轻松地运行脚本。 我在Windows机器上使用带有tcltk的gWidgets。
我创建了一个这样的简单窗口:
require(gWidgets)
require(gWidgetstcltk)
options(guiToolkit="tcltk")
win <- gwindow(title="This is a window!")
grp <- ggroup(container=win)
lbl <- glabel("Here you can write stuff:", container=grp)
txt <- gedit(text="Stuff", container=grp)
当我在新会话上运行时,我收到错误消息:
Error in envRefInferField(x, what, getClass(class(x)), selfEnv) :
‘no_items’ is not a valid field or method name for reference class “Entry”
如果我在错误后重新运行,我会得到这个:
<simpleError in envRefInferField(x, what, getClass(class(x)), selfEnv): ‘no_items’ is
not a valid field or method name for reference class “Entry”>
任何人都可以解释发生了什么事情?
修改 问题似乎只出现在RStudio而不是RGui.exe上。 我不是那么专业的程序员,但我想它与RStudio管理环境的方式有某种关系。
我想现在的问题更多:我如何在RStudio中正常工作?
回溯:
> traceback()
11: stop(gettextf("%s is not a valid field or method name for reference class %s",
sQuote(field), dQuote(thisClass@className)), domain = NA)
10: envRefInferField(x, what, getClass(class(x)), selfEnv)
9: r5_widget$no_items
8: r5_widget$no_items
7: .length(x@widget, x@toolkit)
6: .length(x@widget, x@toolkit)
5: FUN(X[[3L]], ...)
4: FUN(X[[3L]], ...)
3: lapply(X = X, FUN = FUN, ...)
2: sapply(globalValues, length, USE.NAMES = FALSE) at SessionWorkspace.R#166
1: (function ()
{
globals = ls(envir = globalenv())
globalValues = lapply(globals, function(name) {
get(name, envir = globalenv(), inherits = FALSE)
})
types = sapply(globalValues, .rs.getSingleClass, USE.NAMES = FALSE)
lengths = sapply(globalValues, length, USE.NAMES = FALSE)
values = sapply(globalValues, .rs.valueAsString, USE.NAMES = FALSE)
extra = sapply(globalValues, .rs.valueDescription, USE.NAMES = FALSE)
result = list(name = globals, type = types, len = lengths,
value = values, extra = extra)
result
})()