18,733 reputation
350128
bio website
location Sydney, Australia
age 44
visits member for 2 years, 6 months
seen 2 hours ago

Moderator of Mathematica.SE and Celtic goddess.

Check out the Mathematica StackExchange Q+A site


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 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.
Dec
24
comment What are the most common pitfalls awaiting new users?
@BlackMilk late answer, I know, but triply nested For loops are NOT more readable than the alternatives.
Dec
10
comment Find the number of nonzero elements
I think that @anon has sufficiently interesting answers in comments that this question might be worth fixing and keeping?
Dec
3
comment I have a problem for solving this integral
What kind of problem? Could you please share the error message you get? It is hard to help you without more information.
Nov
21
comment Do I have to code each case of this Grid full of plots separately?
Using Table also meant I was subsequently able to extend this code to handle SpanFromLeft and SpanFromAbove cases.
Nov
20
comment How to change start and end date of DateListPlot with Manipulate?
@belisarius it changes randomly between the two, and nobody can understand why. It's weird. ;-)
Nov
19
comment Even Fibonacci numbers
@AlphaCentauri this issue was already discussed on the meta site for Mathematica.SE. Also please don't post this kind of comment as an answer.
Nov
15
comment Not getting the range I want when plotting a function with Show
@JasonB yes, or a package in your Applications/Autoload path
Nov
15
comment Not getting the range I want when plotting a function with Show
@JasonB try SetOptions[#,PlotRange->All]&/@ {Plot, ListPlot, DateListPlot}, adding other plot functions to the list as required.