18,056 reputation
347124
bio website
location Sydney, Australia
age 43
visits member for 2 years, 3 months
seen 17 hours ago

Moderator of Mathematica.SE and Celtic goddess.

Check out the Mathematica StackExchange Q+A site


Apr
14
comment How can I calculate the limit without using the L'Hopital's rule
I have decided not to close this question or migrate, because it has a sensible Mathematica-based answer. As such it will still be useful to the community, even if the OP wasn't actually wanting a Mathematica solution. There is only one more vote needed to close, and I'm happy to be overruled.
Apr
14
comment Integrating a half-normal pdf
thanks this is the right answer, but for this OP, it might be helpful to provide a bit more textual explanation.
Apr
13
comment Z-Transforms and Floor Functions
Hi and welcome to Mathematica.SE! You might want to have a look at the formatting help so you can format your code.
Apr
13
comment iterative programming
Hi and welcome to Mathematica.SE! Your question is likely to be better received if you format your code and show what you have already tried.
Apr
13
comment Gradient method
This question appears to be off-topic because it is not about the software program Mathematica. The poster asks for C++ code and for his work to be done for him. He may wish to post something to StackOverflow that sounds less like a demand, but I won't be migrating this in its current form.
Apr
11
comment Interpolation impossible for ListPlot with Missing?
Have you tried Null instead of Missing[]? I'm not near a computer with Mathematica to check, but this works for me in other contexts. But you will probably still need to index the data.
Apr
11
comment Programming paradigm change
Folks, these are all great solutions, but I do think beginning users would benefit from a bit of explanation of how your code works and why you chose to write it that way.
Mar
31
comment Eigenvectors for a large symbolic matrix
@Somayeh - have you tried just getting rid of the //MatrixForm command. That makes the head of Matrix into MatrixForm instead of List, which is what you need.
Mar
16
comment How to write efficient code? How to make this example run faster?
Duh! Of course. Baby brain... thanks @SimonWoods.
Mar
16
comment How to write efficient code? How to make this example run faster?
Your code is giving me errors. What sort of input are you expecting for Ngamm? I'm guessing positive integers, but it's not clear.
Mar
8
comment Savitzky-golay filter
Don't define table to be in MatrixForm.
Feb
14
comment Using Table[ ] vs using Do[Append [ ] ]
@Szabolcs - maybe add this as a (partial) answer in the original question that this is a dupe of?
Jan
23
comment Please explain this code (contains Append, Do, Coefficient)
@gKirkland yes in fact you can get rid of the s = Transpose[s] by swapping the iterators in the previous statement.
Jan
22
comment GUI Maker? Is there a perhaps drag and drop GUI maker for Mma?
You can also use .Netlink and build a GUI (Windows-only) using Microsoft Visual Studio. I am aware of a project that does this.
Jan
16
comment How can I show a rotated PDF plot superimposed on a ListPlot of the underlying data?
See if DistributionChart does what you need
Jan
16
comment Align plots with a shift
Offset might be what you need.
Jan
16
comment GraphicsGrid confusion
@IgorRivin - try Grid rather than GraphicsGrid.
Jan
16
comment Data is imported as string instead of numbers
Are you sure that the newdata is actually numeric? Try FullForm[newdata] and paste the output as an edit to this question. I suspect that you have strings, not pairs of numbers. i.e. {{"1,4"},... not {{1, 4},...}.
Jan
16
comment equidistant solutions in Sequence Sums That Are Squares
Dear Karl, welcome to Mathematica.SE! The reason your "question" has been down voted by others is that it isn't really posed as a question. It would also be good to add some more information. I have added a link to the demonstration, but it might be good to show some more workings on what you tried to find more lines. Some code would really help. I'm not going to close your question just yet, but please come back and edit it, or else we will have to close it as not a real question.
Jan
10
comment build and estimate a time series process
@SjoerdC.deVries - send me an email - the one at my website's About page.