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MathGroup Archive 2003

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Problems with TickFunction

  • To: mathgroup at
  • Subject: [mg40260] Problems with TickFunction
  • From: "Michael A. Gilchrist" <mike at>
  • Date: Fri, 28 Mar 2003 04:31:32 -0500 (EST)
  • Sender: owner-wri-mathgroup at


I am trying to use the routines in  ExtendGraphics`Tick`. However, I keep
getting the same error when trying to use these functions.  As far as I
can tell it stems from the fact that the subfunction TickPosition,
although defined, doesn't return any numbers

Here's an example of a session

Load Package


Try and run TickFunction


	Transpose::nmtx: The first two levels of the one-dimensional list
	{TickPosition[1,2,8],<<40>>[TickPosition[1,2,8]]} cannot be transposed.

	Transpose::nmtx: The first two levels of the one-dimensional list
	{TickPosition[1,2,8],<<40>>[<<1>>],{0.06,0},{Thickness[0.02]}} cannot be

	Join::heads: Heads Transpose and TickPosition at positions 1 and 2 are
	expected to be the same.

      	ExtendGraphics`Ticks`Private`TrimDecimal[TickPosition[1,2,8]],{0.06, 0},
	{Thickness[0.02]}}], TickPosition[{32,,{0.003125,0},{Thickness[0.001]}}]]

If I inquire about TickPosition it appears to be defined


	TickPosition[ min, max, num] returns a list of at most num nicely rounded
	positions between min and max.  These can be used for tick mark positions.

However, when used the function just returns the command used to call it
	TickPosition[1, 2, 5]


Has anyone else seen this problem or does anyone have any ideas what's
going wrong here.

Thanks in advance,

Mike Gilchrist

BTW: I just reinstalled the ExtendGraphics files and that didn't help

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