Mathematica
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Using Mathematica to create simple HTML webpages I have been playing with Mathematicas Export[ ] function in order to create a simple website and would be intereseted in others perspectives, tips and advice. 1. Is the first tip don't do it? 2. When I export to HTML the first thing I find is the formating for Grids and Columns disappears - the text is in the right ... 10 Jun 2010 08:52
Programatically creating delayed assignment Hi, I would appreciate any thoughts regarding the programatic construction of delayed assignments, for example using something like the following Scan: Scan[(ToExpression[#]:= Table[ToExpression[# <> "element"][i], {i, 3}])&,{"a","b"}] to create the following delayed assignments: a:= {aelement[1], aelement[... 9 Jun 2010 07:31
FullSimplify and negative radicands Why does FullSimplify think this equation is true even though x = -3 is clearly a counterexample? In[1]:= equation = Sqrt[x^2 - 1] == Sqrt[x + 1] Sqrt[x - 1] Out[1]= Sqrt[-1 + x^2] == Sqrt[-1 + x] Sqrt[1 + x] In[2]:= $Assumptions Out[2]= True In[3]:= equation // FullSimplify Out[3]= True In[4]:= equati... 9 Jun 2010 07:31
General question regarding solving equations Hello. I've been using the "Solve" function in order to find out which values of a certain variable satisfy some given conditions. Those conditions are expressed as functions of other parameters of variables. To be more precise: Solve[3 fiX[d + 3 Cp] + 3 fiX[d - 3 Cp] - (6/lambda) fiX[d + 6 Cp/lambda] - (6/... 10 Jun 2010 08:52
Lists: Row Vectors vs. Column Vectors. (feels like such a silly Group: I'm trying to understand the *reasoning* behind Mathematica's treatment of lists, rows and columns. Basically, I feel like I'm in a weird place--- I get what's going on well enough to translate various econometric examples, but I wouldn't be able to clearly explain Mathematica's behavior to someone previo... 23 Jun 2010 02:59
Using Nearest function This is my first attempt at writing Mathematica code but I am getting strange results which are probably due to some bug I cannot detect. This code creates a test set with 2 classes and size 1000 from a Bivariate Gaussian distribution then creates 6 training sets with 2 classes and sizes 10^i, i = 1..6. Then I... 7 Jun 2010 08:31
Computation of cross correlation between two signals Dear Experts I have data values (which are two experimental signals ) which I have in the form of 2 X n array. How do I go about calculating cross correlation between these two rows of the array ? Praveen Research student Physics Department Bangalore University ... 8 Jun 2010 08:02
Understanding EventHandler Below I show two nested EventHandlers. I am trying to work out how to get separate events from MouseDown, MouseDragged, MouseUp and MouseClicked. As far as I can see if the mouse is clicked this is also an event for MouseDown and MouseUp. Similarly however long I wait between a down and an up I get a click. How are... 7 Jun 2010 08:31
DynamicModule and FileNameSetter problem As I understand it, DynamicModule can be used to make a variable maintain it's value across sessions, so that even if I close down Mathematica and open it up again, the values localized by DynamicModule should still work, using this with dynamic controls works fine for me, however when I try to localize a directory... 8 Jun 2010 08:02
SendMail under Mac OS X This is working fine for me on my OSX system (10.6.5). --David On Jun 5, 7:31 am, Luis <lgmen...(a)gmail.com> wrote: Dear all, In my laptop running Mac OS X (10.6.3) I can not send an email using the function SendMail (under Linux operative system the code works) Mathematica version 7.0 1.0: S... 9 Jun 2010 07:31 |