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Moderator of Mathematica.SE and Celtic goddess.

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1d
comment How to keep first observation and delete other observations of each group in unbalanced Panel data
Oops! Typing too fast – thanks bel!
2d
comment C# Tree view similar
Does OpenerView do what you want?
Nov
18
comment How does Mathematica resolve symbolic systems of inequalities?
Bill, welcome to the site. Have you looked at Assumptions and Assuming?
Nov
17
comment Solving Symbolically in Mathmatica 10.1-
One other thing, John, you are mixing up real (0.02) and exact numbers here. Consider sol = Solve[ Sqrt[29991348*x^2 - 13958305552*x + 992000000 + ((a - b)/x)/(2/100 + c - a)] == 0, x] or soln = NSolve[Sqrt[29991348.0*x^2 - 13958305552.0*x + 992000000.0 + ((a - b)/x)/(0.02 + c - a)] == 0, x], rather than a mix of number types.
Nov
17
comment Solving Symbolically in Mathmatica 10.1-
Once I wrote down Solve[Sqrt[29991348*x^2 - 13958305552*x + 992000000 + ((a - b)/x)/(0.02 + c - a)] == 0, x] it gave me the answer instantly. However, it's too big to write in the margin of this comment.
Nov
17
comment Solving Symbolically in Mathmatica 10.1-
Welcome, John! What paw said, and also, it's Solve[equation,x] with uppercase first letter, square brackets and no quote marks, not solve("equation", x). I recommend some introductory material and familiarise yourself with the syntax of the language. That will make things easier for you. Please do come back with other Mathematica questions you might have.
Nov
17
comment How to create an effective PlotLegend when plotting many ListPlots?
Dots and dashes won't help you if you are using ListPlot and Joined->False as the default. See how some of your data series (e.g. that green one) have breaks in them?
Nov
14
comment ListPlot with background image?
Overlay is probably what you want.
Nov
14
comment Fitting data to a circle with FindFit
Welcome to the site, John! I have formatted your post for you. Your problem is a common syntax error. See mathematica.stackexchange.com/a/18395/8 - underscore is a reserved character. For this reason, I have marked your post as a duplicate of that question.
Nov
13
comment Using List/Histogram Data As A Weighted Function?
Have a look at Interpolation.
Nov
12
comment Encountering a Tag times Protected error, but cannot find the source
Hi there. Mathematica is case sensitive: see mathematica.stackexchange.com/a/18395/8 - so try fixing up your function name capitalisation and see how that goes.
Nov
10
comment Visualizing Line Integrals
@ubpdqn - I've added the other example. I probably should have included it in the first iteration (I'd already thought of it) but focused on BoundaryStyle as the value I was adding.
Nov
9
comment Exclude data from a list
Ok, then I don't have time to work it out now (bedtime in Australia) but you probably do actually need some kind of equation for each regions, and then use DeleteCases to remove the points.
Nov
9
comment Exclude data from a list
What is your application? Would an Epilog that drew white shapes on top of the points you wanted to "delete" suffice?
Oct
31
comment Grid lines extending too far
I don't think this answers the question
Oct
31
comment Grid lines extending too far
Try PlotRangePadding->None.
Oct
30
comment DumpsterDoofus's captivating generative art
What have you tried? ;-)
Oct
30
comment Trying to get plots to work AGAIN
And there it is!
Oct
30
comment Trying to get plots to work AGAIN
And @Jesse, I get that it can be frustrating learning a new language, especially one as strange and particular as Mathematica, but please, cut out the foul language. It's not appropriate to this site and is unnecessary. I can't believe that this is probably the answer that will kick me over the 20,000 rep points line.
Oct
21
comment Export to PDF on OS X, font missing on Windows
This looks like it was done on version 10. The PDF export process changed a lot in that version, so I can't be sure that this answer is relevant to the poster, who is using v9.