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Plot with ordinate values summed

  • To: mathgroup at
  • Subject: [mg122361] Plot with ordinate values summed
  • From: leigh pascoe <leigh at>
  • Date: Wed, 26 Oct 2011 17:40:04 -0400 (EDT)
  • Delivered-to:

Dear Mathgroup,

Can someone please help me with the following display problem. I have 
data of the form

data={{{x1,y1}, {x1,y2}, {x2,y2}.....{xn,yn}}{xx,yy},{},........}}}

or a list of lists of {x,y} coordinates. I want to plot each set 
separately, which I have done with the following inelegant  commands:

fil2=Import[.. //file2]; etc

filelist = {"fil1", "fil2", "fil3", f "il4", "fil5", "fil6", "fil7",
   "fil8", "fil9", "fil10", "fil11", "fil12", "fil13", "fil14",
   "fil15", "fil16", "fil17", "fil18", "fil19", "fil20", "fil21",

elementlist = {fil1[[All, {3, 5}]], fil2[[All, {3, 5}]],
    fil3[[All, {3, 5}]], fil4[[All, {3, 5}]], fil5[[All, {3, 5}]],
    fil6[[All, {3, 5}]], fil7[[All, {3, 5}]], fil8[[All, {3, 5}]],
    fil9[[All, {3, 5}]], fil10[[All, {3, 5}]], fil11[[All, {3, 5}]],
    fil12[[All, {3, 5}]], fil13[[All, {3, 5}]], fil14[[All, {3, 5}]],
    fil15[[All, {3, 5}]], fil16[[All, {3, 5}]], fil17[[All, {3, 5}]],
    fil18[[All, {3, 5}]], fil19[[All, {3, 5}]], fil20[[All, {3, 5}]],
    fil21[[All, {3, 5}]], fil22[[All, {3, 5}]]};

i.e. taking data from columns 3 and 5 to get my {x,y} data.

ListPlot[#, Filling -> Axis, AxesLabel -> {"theta", "lod"}] & /@ elementlist

Then gives me a plot for each file with labeled Axes.

I would also like to plot data corresponding to the sums of the y values 
where the x value is repeated, so

{{x1,y1},{x1,y2},{x1,y3}} in a given file should become {x1,y1+y2+y3}

and the mean of the y values i.e. {x1, (y1+y2+y3)/3} etc

Finally it would be nice to have a title for each plot corresponding to 
the file name or other list of titles. I can't quite seem to get this to 
work. I would appreciate any help.



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