On 3/3/07, Robert McWilliam <[EMAIL PROTECTED]> wrote: > On Sat, 3 Mar 2007 15:25:28 +0000 > "Robin Menneer" <[EMAIL PROTECTED]> wrote: > > Postscript. Found (eventually) at www.xru.org.index.asp a program > > which I used on line (on a mac), is very simple, and apart from not > > drawing the graph, did all I wanted, including giving me the points > > for me to draw. It should be part of the Ubuntu package. > > I've just discovered that oocalc may in fact do what you want, or at > least a bit closer to it than I thought, if you select XY plot instead > of line graph for the plot type (the next step lets you select between > points or lines etc.) I've put a screenshot showing the icon for XY plot > online at http://ormiret.com/foo/x-y.png > since oocalc doesn't seem to display the name until after you click on > the icon. > I had already got in OO to that page (thanks) but I'm dealing with a curve. Apologies for misleading you to the curve regresssion website is www.xuru.org.index.asp (I missed out a u). Its non-linear regression seems especially useful in curve smoothing.
> This just draws straight lines between the points rather than higher > order interpolation so if you don't have many points you might have to > implement some form of interpolation in the spread sheet (I can't find > any interpolation formulae in oocalc). > > I think this is proving complicated because although you have what > seems like a fairly simple plotting problem it is quite rare for > someone to want this without wanting to do other data processing steps > and so using something like octave[1], or the numeric libraries for > their programming language of choice[2]. You've unfortunately got a > problem that lies just beyond what is easy with oocalc (unless joining > the dots is sufficient). > > [1] http://www.gnu.org/software/octave/ > [2] e.g. http://scipy.org/ for python > > > ________________________________________________________ > Robert McWilliam [EMAIL PROTECTED] www.ormiret.com > > Instructions should be read first, or not at all. > Anything else is admitting defeat... > > -- > ubuntu-uk@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk > https://wiki.kubuntu.org/UKTeam/ > -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/
