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Mar
16
comment how can I change the length/size ticks in a framed plot?
I'm surprised that I couldn't find a dupe for this, but it seems it hasn't actually been asked before.
Mar
12
comment How to access data from WHO Mortality Database
Check out the Import function, which supports ZIP files. You would need to know the internal structure of the ZIP archive to see if there are any directories within it.
Mar
5
comment how to reduce noise in time series data?how to do interpolation for missing value data?
Have a look at ListInterpolation
Feb
23
comment Help with functions in Mathematica
@m_goldberg - I'm guessing ToCharacterCode? Connor, you might not need your own function for this.
Feb
21
comment Copy/export a plot as vector EMF
The Opacity trick definitely works. Your issue is not the EMF issue, it's that you can't use Export at all.
Feb
12
comment Time inhomogeneous Markov Chain in Mathematica
I haven't time to work this out myself but something involving FoldList and an Array of the relevant transition matrices should work. The main catch is that RandomFunction outputs TemporalData, so you might need to use ["Paths"] to strip it back to a plain list.
Feb
12
comment Iterating a model with 2nd order difference equations using Manipulate
jones, please don't post another version of the same question just because the prior one was closed. Edit the old question to improve it (thus fixing the reason for its closure) and click "flag" to have it reopened. As a gesture of goodwill I've reopened the previous one.
Feb
9
comment Kalman filter estimation
@Nasser - could you perhaps work this up into an answer with a couple of examples? And Luke, welcome to Mathematica.SE! I hope you find the site useful.
Jan
19
comment Updating a GUI with ComboBox using GUIKit
Dear Dennis, welcome to Mathematica.SE! It would help if you posted code showing what you have tried.
Jan
14
comment Periodogram for irregularly spaced data
@Sektor - I've pasted the data in for the UK at least.
Jan
14
comment Periodogram for irregularly spaced data
@MikeHoneychurch - unfortunately Periodogram doesn't take TemporalData in v9, and I don't think that's changed in v10.
Jan
14
comment Periodogram for irregularly spaced data
One can apply a LowpassFilter to the data before drawing the Periodogram, but given that their whole thesis is about the relative importance of other bits of the spectrum, that's a bit odd.
Jan
7
comment How to simultaneously change variables shared by several functions?
It's not clear to me what you mean. Do you mean you want to be able to define your functions to take variable numbers of arguments (in which case define them like this: condition1[args__]:=...), or do you just want to use the same list of inputs for several functions (in which case have a look at Through)?
Jan
5
comment How to control pedestrians to enter the simulation region with random functions?
I would suggest getting the constant-probability-of-entry case working first. Also, you might have better results if you don't use subscripts. Have a look at some of the suggestions in this question.
Jan
1
comment Mean squared error of two matrices
This question appears to be off-topic because it is about finding an appropriate way to fit data to a model, not how to use Mathematica to do so.
Dec
31
comment Trying to Figure Out how to work with datasets & Classify[] and Predict[]
If you are the original poster, but just didn't fully register the first time this link might be helpful. If you merge your accounts, the rep you gained from the question will be added to that earned from the answers.
Dec
31
comment Counting the total number of instances of some collection of objects in a list
This gives the right result for the test case, but isn't it a bit convoluted compared with the built-in Alternatives function?
Dec
18
comment How to draw multi curves in a graph with errorbars
I know this isn't the crux of the question, but wouldn't the data be more simply constructed using FoldList rather than a For loop? i.e. DATA=FoldList[#1+#2&, Table[{0, Random[], Random[]}, {n}], Table[{1/n, RandomReal[{-1, 1}]/20, RandomReal[{-1, 1}]/20}, {m-1},{n}]]. At the very least, the Table construct doesn't require an explicit j iterator.
Dec
17
comment My code does not give the same results on mathematica 9 and 10
@Developer2000 - you should not assume that it was me who downvoted. In this case it was, and now that you have clarified what your question is, I am happy to do so. But please bear in mind that it is not usually considered appropriate to ask for votes to be changed. Downvoting is one of the incentives in StackExchange to ensure questions are improved. In this case, the system worked.
Dec
17
comment Incorporating the minimum and maximum of the function in a Dynamic plot
Welcome to Mathematica.SE! It isn't really appropriate for us to do your homework for you, but here are some hints that might help. You can use calculus to find turning points, and show the turning point using Epilog, like this: Dynamic[Plot[f, {x, -10, 10}, Epilog -> {Red, PointSize[Large], Point[{With[{minx = First[x /. Solve[D[f, x] == 0]]}, {minx, f /. x -> minx}]}]}]].