[R] gslider-gwidgets

[j verzani]

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
>