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List:       openoffice-users
Subject:    graphing
From:       David Ananian-Cooper <davidac17 () yahoo ! com>
Date:       2002-05-26 3:30:53
Message-ID: 200205261248.57685.davidac17 () yahoo ! com
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hey all

i have a few complaints about the graphing capabilities of OpenOffice Calc

First of all, it can't seem to deal with trendlines properly - like you can 
create them, but you can't then extend them past the values you have entered 
so that you can make proper conjectures about results you havent actually got 
- - this function is very useful for scientific writups and probably many other 
things. I remember reporting this lack for staroffice 5.2, and i expected it 
would have been implemented by now, obviously not!!

also, just a sugestion - when you select the trendline (or regression curve, 
whatever you want to call it) and press delete, why the error message?? isnt 
it intuitive that when you press delete on the trendline you mean that you 
want it to go away (ie option on the dataset goes to "No regression curve 
insead of the current one). 

Also, when the regression curve is almost the same as the graph of the 
dataset, it is often very difficult to actually select the dataset to disable 
the trendline. Hence as you cant delete the trendline or select the dataset 
to disable it sometimes it is almost impossible to get rid of it without 
deleting the graph and creating a new one!!!

The current system is also a little restrictive as you can only have one 
regression curve at one time for each dataset. Would it not be better to have 
an "add regression curve" function on each dataset, which then creates a new 
object on the graph which you can then stretch for extrapolation and which 
you can delete when you want to. This would also allow you to add multiple 
regression curves on each object.

Of course, i dont know how feasable this is, but it seems to me as though it 
would be a much better way to do things.

I hope that I am posting this to the relevant mailing list, if not can someone 
tell me so that I can post it to the relevant people

cya all

David Ananian-Cooper
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