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Moderator of Mathematica.SE and Celtic goddess.

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Oct
25
comment My black text isn't black after exporting to PDF
@cormullion unfortunately EPS -> PDF is not an option because of font substitution issues.
Oct
25
comment My black text isn't black after exporting to PDF
Thanks Alexey, yes this accords with what my colleagues are telling me when they preflight the PDF produced from Mma 9.
Oct
25
comment My black text isn't black after exporting to PDF
@MikeHoneychurch Haha - no, it's a do-it-in-my-lunchtimes-on-top-of-my-official-job problem :-D
Oct
23
comment Recurrence relation: Find a recurrence and evaluate (on WolframAlpha)
Hello josinalvo, welcome to Mathematica.SE! Your question is about Wolfram Alpha, which is explicitly off-topic on this site. I won't close your question on this occasion, because @Tangshutao has provided a Mathematica answer that some people have upvoted. But please in future ask questions about the software Mathematica here, not about Wolfram Alpha.
Oct
18
comment Invert Colors Stylesheet White on Black
Is your question how to change the colors of the notebook font and background? What is your criterion for success? Are you looking for a more elegant solution than what you have? PS: Strongly related: mathematica.stackexchange.com/questions/1389/…
Oct
17
comment the way to save multidimensional array in text file
Answer to your subquestion: Mathematica is case-sensitive so cos is not the same as Cos. Please do familiarise yourself with the the basic tutorials in the documentation, as this will save you and other site members a lot of time.
Oct
12
comment Optimum number of cog teeth for two step helical gearbox
Is this a question about the software Mathematica? It looks like you might have intended to post this at our sister site, math.SE
Oct
3
comment Check whether a function of two variables is a probabilty distribution function
Hello xmpirate! It is not clear that your question is about using the Mathematica software. Please indicate what you have tried, including any code that is not working for you. Belisarius has given an example in his answer, but perhaps your question is about something else. It is not very clear.
Oct
2
comment Avoiding zero (empty set) solution with NDSolve
Dale, I think you have an unregistered account and a registered one (djw238). On the assumption that you want to collect all your reputation in one place, please use the contact us link to request an account merge.
Oct
1
comment How can I manipulate TemporalData?
@IstvánZachar - nice, thanks! I hadn't had time to delve further into those bits.
Sep
25
comment Is there any good way to find and/or plot numerical integrals of non-continuous functions like Tan[x]?
@Brendan since you feel no answer is possible, I've closed the question as too broad. If you want to try a narrower question, please edit it and it can be reopened.
Sep
21
comment johansen test error in code
Yes, and I already knew about the error from the Wolfram community forum. I haven't looked at this code for about 15 years. Due to work and family commitments, I'm not going to get around to fixing it for a while.
Sep
19
comment Transcendental equation Non-linear how to solve
Dear @user7096 - if you want to improve your question, please edit it using the "edit" link at the bottom of the question.
Sep
19
comment Taking a percentage of data from a list or a table
Top and bottom X% by length or by value? Consider TrimmedMean if that is what you are intending to calculate.
Sep
19
comment Taking a percentage of data from a list or a table
What if the rounded value Round[LengthofData*StartPercentage, 1] is 0? I think you need a few extra checks in here. I also don't think you need the final parameter - just let the function get the Length of the data directly. Otherwise you could have a last parameter that is not compatible with the data.
Sep
19
comment Autoregressive distributed lag model
If you mean distributed lags of exogenous variables, then you need to respecify the FoldList approach to have more than one element in each iterate of the list in the last argument.
Sep
18
comment Simplify vector expression - is there something like “Factor” for vectors, dot products etc.?
Dear physicslol, welcome to Mathematica.SE! Please don't post comments as answers, as it works against the Q&A and model of the site and can be unhelpful for future visitors. I've turned your answer into a proper comment.
Sep
18
comment Autoregressive distributed lag model
Please also see the "Related" questions shown in the sidebar to this question, particularly this one
Sep
17
comment Double series over primes
All, given the divided views on whether the question should be closed, I propose to give it the benefit of the doubt and leave it open. If a question has this many upvoted answers, it deserves to be left open.
Sep
17
comment Double series over primes
Chris' sis, whoever it was would like you to provide more details and ideally some Mathematica code.