Mathematica

Change position of axes label
Hi I have the following plot Plot[x^2, {x, -2.5, 2.5}, Frame -> True, PlotRange -> {-0.012, 0.012}, AxesLabel -> {"label 1", "label 2"}] Is it possible to move "label 2" such that it stands right above the vertical axis? I.e., I want to move "label 2" to the left. The position of "label 1" is perfect. ... 20 Apr 2010 15:52

No state-space form possible example
I am looking for some examples of initial value ordinary differential equations that *can not* be put in state-space form. Any examples would be appreciated, especially ones that can be connected to some physical model. --V. Stokes ... 20 Apr 2010 15:52

Tracking dynamic trigger
Is there any way to know what symbols Mathematica decided that should trigger a dynamic update? I had done a function that seemed to work fine, but I found a bug when I happened to wrap it in in a Dynamic: it gets in a loop autotriggering itself endlessly and uselessly. The function (Spectrogram) uses other func... 18 Apr 2010 06:29

interesting mathematica questions on StackOverflow
Another resource for Mathematica questions is http://stackoverflow.com/questions/tagged/mathematica The answers (and the questions) tend to be very high quality. Here's a sampling: posmax: like argmax but gives the position(s) of the element x for which f[x] is maximal: http://stackoverflow.com/questions/2656... 18 Apr 2010 06:29

sqlite database connection
Can anyone hep me connect to a sqlite database? I have used DatabaseLink extensively with MySQL, but sqlite is not in the list of available databases. The only example I have found online is at < http://dev.ragfield.com/2009/05/wolframalpha-tweet-analysis.html> a blog of "Rob", a wolfram employee. His syntax ... 18 Apr 2010 06:29

Piecewise once more
When trying to find an answer to mercia's post I came into this stepFunction::usage = "stepFunktion[x,{x1,x2,...,xn},valfunc] generates a \ stepfunction using Piecewise from List xi, where x1<x_2<...xn valfunc is a function of two parameters to calculate the value \ inside Interval [\!\(\*SubscriptBox[\"... 17 Apr 2010 06:24

Question on replacementFunction
Could somebody explain why replacementFunction fails for the simpler x*y-w*z but works for (x*y-w*z)^2? Of course the erratic behavior of ReplaceAll is well known. Here are the tests (I took replacementFunction from an earlier thread): replacementFunction[expr_, rep_, vars_] := Module[{num = Numerator[expr],... 20 Apr 2010 15:53

DynamicModule not saving reliably a variable between
> My current workaround is to additionally save the jobs list to a file jobs.m Button["Add job", jobs = savedJobs =..; Save["jobs.m", savedJobs], Method -> "Queued"] and to load this file during initialization I found this bug as well and reported it to Wolfram along with a minimal test case. It is ind... 17 Apr 2010 06:24

Nest and Fold don't respect HoldFirst?
Dear group, I just wanted to check that I'm correct in thinking that I cannot use Nest or Fold to iterate a function, where that function has a HoldFirst attribute set that allows it to modify the global variable (parameter) passed to it. As a test case / example I define a function which modifies a global vari... 20 Apr 2010 15:53

London Computational Knowledge Summit
Wolfram Research will be hosting a one-day conference to discuss the application of technologies such as Mathematica and Wolfram|Alpha to enterprise knowledge. The event will be held on 9th of June, 2010, in London, United Kingdom. For more information and to register go to http://www.computationalknowledge.or... 16 Apr 2010 07:15