R help - May 2012 - gslider-gwidgets

Hello R lovers,

For my GUI, I am using gslider of Gwidgets. I need to add the "to="
value
dynamically ie., maximum value from a data frame column(something like
to=max(df[,3])).  But I am getting error message like 

Error in checkPtrType(object, "GtkWidget") : 
  object of class NULL isn't a GtkWidget

Not sure what I am missing here!!!

Regards,
karthick


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karthicklakshman <karthick.lakshman <at> gmail.com> writes:
> 
> Hello R lovers,
> 
> For my GUI, I am using gslider of Gwidgets. I need to add the
"to=" value
> dynamically ie., maximum value from a data frame column(something like
> to=max(df[,3])).  But I am getting error message like 
> 
You update the items to select from using [<-, as in:

sl <- gslider(container=gwindow()) ## use defaults
sl[] <- seq(0, 2*pi, length=100)   ## new values

Of course, your sequence values will depend on the data frame you have
in mind


> Error in checkPtrType(object, "GtkWidget") : 
>   object of class NULL isn't a GtkWidget
> 
> Not sure what I am missing here!!!
> 
> Regards,
> karthick
>