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Scatter Chart with Smoothed Lines



 
 
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  #1  
Old January 24th, 2006, 11:07 PM posted to microsoft.public.excel.charting
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Default Scatter Chart with Smoothed Lines

Does anyone know what function Excel uses to create smooth lines connecting
the points in a scatter plot? Is it a cubic spline?
  #2  
Old January 25th, 2006, 01:31 PM posted to microsoft.public.excel.charting
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Default Scatter Chart with Smoothed Lines

Here are results of a Google newsgroup search
http://groups.google.ca/groups?as_q=...0 06&safe=off


The simple answer seems to be "yes"
--
Bernard V Liengme
www.stfx.ca/people/bliengme
remove caps from email

"rachsull" wrote in message
...
Does anyone know what function Excel uses to create smooth lines
connecting
the points in a scatter plot? Is it a cubic spline?



  #3  
Old January 27th, 2006, 04:34 AM posted to microsoft.public.excel.charting
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Default Scatter Chart with Smoothed Lines

Near the bottom of this page, Brian Murphy of XLRotor claims it's a Bezier
curve:

http://www.xlrotor.com/resources/files.shtml

He's done a bunch of analysis to back it up.

- Jon
-------
Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
_______

"Bernard Liengme" wrote in message
...
Here are results of a Google newsgroup search
http://groups.google.ca/groups?as_q=...0 06&safe=off


The simple answer seems to be "yes"
--
Bernard V Liengme
www.stfx.ca/people/bliengme
remove caps from email

"rachsull" wrote in message
...
Does anyone know what function Excel uses to create smooth lines
connecting
the points in a scatter plot? Is it a cubic spline?





  #4  
Old January 31st, 2006, 05:49 PM posted to microsoft.public.excel.charting
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Default Scatter Chart with Smoothed Lines

Excellent! Given that Excel is calculating the Bezier curves, why isn't this
excellent interpolating tool offerred as a standard function?

"Jon Peltier" wrote:

Near the bottom of this page, Brian Murphy of XLRotor claims it's a Bezier
curve:

http://www.xlrotor.com/resources/files.shtml

He's done a bunch of analysis to back it up.

- Jon
-------
Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
_______

"Bernard Liengme" wrote in message
...
Here are results of a Google newsgroup search
http://groups.google.ca/groups?as_q=...0 06&safe=off


The simple answer seems to be "yes"
--
Bernard V Liengme
www.stfx.ca/people/bliengme
remove caps from email

"rachsull" wrote in message
...
Does anyone know what function Excel uses to create smooth lines
connecting
the points in a scatter plot? Is it a cubic spline?






  #5  
Old January 31st, 2006, 06:18 PM posted to microsoft.public.excel.charting
external usenet poster
 
Posts: n/a
Default Scatter Chart with Smoothed Lines

I'm sure it's because the built-in bezier drawing routines are buried so
deep, it would be a huge effort to extract any of the information, and
translate it into chart axis scales.

- Jon
-------
Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
_______


"Waterboy" wrote in message
...
Excellent! Given that Excel is calculating the Bezier curves, why isn't
this
excellent interpolating tool offerred as a standard function?

"Jon Peltier" wrote:

Near the bottom of this page, Brian Murphy of XLRotor claims it's a
Bezier
curve:

http://www.xlrotor.com/resources/files.shtml

He's done a bunch of analysis to back it up.

- Jon
-------
Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
_______

"Bernard Liengme" wrote in message
...
Here are results of a Google newsgroup search
http://groups.google.ca/groups?as_q=...0 06&safe=off


The simple answer seems to be "yes"
--
Bernard V Liengme
www.stfx.ca/people/bliengme
remove caps from email

"rachsull" wrote in message
...
Does anyone know what function Excel uses to create smooth lines
connecting
the points in a scatter plot? Is it a cubic spline?







 




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