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MathGroup Archive 2007

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Re: 6.0 Get Graphics Coordinates...

  • To: mathgroup at smc.vnet.net
  • Subject: [mg77755] Re: 6.0 Get Graphics Coordinates...
  • From: David <habud at hotmail.com>
  • Date: Sat, 16 Jun 2007 03:24:52 -0400 (EDT)
  • References: <f4on38$7sg$1@smc.vnet.net> <200706140911.FAA05973@smc.vnet.net> <f4tm2d$ira$1@smc.vnet.net>

Murray Eisenberg wrote:
> Useless??  Hardly!  Surely just doing Plot[...] and then Ctrl-clicking 
> is a lot easier for a beginner (e.g., a student using Mathematica) than 
> to deal with a Dynamic object.
> 
> On the other hand, and apart from the issue of what to do with 
> Ctrl-click when the graphics object is dynamically generated, there 
> would seem to be a design issue: Now, in 6.0, Ctrl-mouse-button-down is 
> the start of a zoom-in/zoom-out for a 3D graphic.
> 
> Jens-Peer Kuska wrote:
>> Hi,
>>
>> it has been droped because it is useless try
>>
>> gr = Plot[Sin[x^2], {x, 0, 2 Pi}];
>>
>> and
>>
>> DynamicModule[{pnt = {0, 0}},
>>   gr /. Graphics[gg_, opts___] :>
>>     Graphics[Append[gg, Tooltip[Locator[Dynamic@ pnt], Dynamic@ pnt]],
>>      Prepend[Prepend[{opts}, PlotLabel -> Dynamic[pnt]],
>>       AxesLabel -> {Dynamic[First[pnt]], Dynamic[Last[pnt]]}]]
>>   ]
>>
>> and
>>
>> DynamicModule[{pts = {{0, 1/2}, {2, 1/2}}}, LocatorPane[Dynamic[pts],
>>    gr, LocatorAutoCreate -> True]]
>>
>> Alt-Mouse click will add points ..
>>
>> Regards
>>    Jens
>>
>> roby.nowak at gmail.com wrote:
>>> hello, what happened to:
>>> 5.2  Get Graphics Coordinates...
>>>
>>> in version 5.2 you could click inside a graphic and when holding down
>>> the <Ctrl> key the coordinates of the cursor within the graphics would
>>> be displayed. you could then click with the mouse and every clicked
>>> position got saved in a buffer. then you could copy and paste the
>>> saved coordinates as a list of number pairs.
>>>
>>> regards robert
>>>
>>>
> 

How about the following simple alternative? It closely approximates the 
display of points available in pre-6.0, but only shows actual points on 
the curve (a benefit for me).

Plot[Tooltip[Sin[x], Dynamic[MousePosition["Graphics"]]], {x, 0, 10}]



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