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MathGroup Archive 2002

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Re: FrameTick Problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg35128] Re: FrameTick Problem
  • From: timreh719 at yahoo.com.tw (bryan)
  • Date: Tue, 25 Jun 2002 03:42:56 -0400 (EDT)
  • References: <af6ijd$lmn$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

qualsystems*nospam* at mindspring.com wrote in message news:<af6ijd$lmn$1 at smc.vnet.net>...
> Can anyone help with this ?
> 
> Here is the FrameTick example from the online help.
> 
> Plot[Sin[x], {x, 0, 2  Pi}, Frame -> True,  FrameTicks -> {{0, Pi/2,
> Pi, 3  Pi/2, 2  Pi}, {-1, 0, 1}}]
> 
> So far, so good.
> 
> Now what if you want to change the y axis FrameTicks so that they
> range from say -2 to 2 instead of -1 to 1. So one would believe that
> the FrameTicks option would  be changed accordingly but the command
> below does not accomplish this.
> 
> Plot[Sin[x], {x, 0, 2  Pi}, Frame -> True,  FrameTicks -> {{0, Pi/2,
> Pi, 3  Pi/2, 2  Pi}, {-2, 0, 2}}]
> 
> Can someone explain why this does not work and what would ?
> 
> Thanks
> 
Dear friend:
  The reason that you can't change it's y ticks from {-1,0,1} to
{-2,0,2} is that you exceed the range you plot . So , we have to
broaden the plot range if you want to use the ticks {-2,0,2}.    i.e.
 
Plot[Sin[x], {x, 0, 2 Pi}, Frame -> True, 
  FrameTicks -> {{0, Pi/2, Pi, 3 Pi/2, 2Pi}, {-2, 0, 2}}, 
  PlotRange -> {-2, 2}]
 
This is the key to the problem . I hope this helps you.  
                                                          bryan
sincerely


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