[R] Friendly way to link R - MySQL and non-(R and Mysql) users ?

[Ptit_Bleu]

Dear Gabor,

Thanks for the links.
I found a a tcl script (see below ; from http://wiki.tcl.tk/15977) which
could be a good starting point but I'm not able to translate it into R.
Could you help me ?
In particularly, what is the command corresponding to
append_float_dialog_item ?
I looked in ?tcltk but I haven't found "append" command.

Thanks in advance,
Have a nice week-end,
Ptit Bleu

-----------------------------------------------------

# Simple sphere demo with UI for Shade

 # Variables: radius, center coordinates, RGB color
 set r 600
 set X 0
 set Y 0
 set Z 0
 set R 1.0
 set G 0.1
 set B 0.1

 # The UI starts here
 begin_dialog

 # Create a dialog box with 7 typed entries
 append_float_dialog_item "Radius"
 append_float_dialog_item "X center"
 append_float_dialog_item "Y center"
 append_float_dialog_item "Z center"
 append_float_dialog_item "Red value (0..1)"
 append_float_dialog_item "Green value (0..1)"
 append_float_dialog_item "Blue value (0..1)"

 # Initial values for items
 set_float_property_value 0 to $r
 set_float_property_value 1 to $X
 set_float_property_value 2 to $Y
 set_float_property_value 3 to $Z
 set_float_property_value 4 to $R
 set_float_property_value 5 to $G
 set_float_property_value 6 to $B

 # ask_dialog is true if we hit on OK button
 if [ask_dialog] {
   set r [get_float_property_value 0]
   set X [get_float_property_value 1]
   set Y [get_float_property_value 2]
   set Z [get_float_property_value 3]
   set R [get_float_property_value 4]
   set G [get_float_property_value 5]
   set B [get_float_property_value 6]
   if {$R > 1.0} {set R 1.0}
   if {$G > 1.0} {set G 1.0}
   if {$B > 1.0} {set B 1.0}
   end_dialog
 } else {
   end_dialog
   error cancel_dialog
 }
 # End of UI

 # Create a tagged sphere with radius r at <X,Y,Z> coordinates
 create_sphere at [list $X $Y $Z] r $r sphere_1

 # set color to sphere_1
 set base_color [list $R $G $B]

 # Render the result
 render
-- 
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