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14
votes
1answer
943 views

Sales forecast using SARIMAProcess and time-series data

I would like to ask for help in how to use the new Mathematica 9 time series functions to make some sales forecast. For example, for one of our stores, I have this data set with 35 points, from ...
20
votes
3answers
1k views

How can I make a heatmap of a days in year?

I know Mathematica has a ListPlot for time series but does it have a function for visualizing a list of dates as a heat map like this: This idea is from D3, check it out here.
3
votes
1answer
490 views

How can I forecast time series data with cellular automata?

I have a time series data, for example data = FinancialData["JK:ADRO", "July 16 2012"] Can I use CellularAutomaton to ...
5
votes
1answer
922 views

Time-frequency analysis beyond wavelets

What possibilities are there for time-frequency analysis in Mathematica beyond wavelet decomposition? I could not even find a simple STFT.
7
votes
1answer
366 views

LogLikelihood function from the Time Series package is apparently missing

The Time Series package for Mathematica comes with a function called LogLikelihood. It is discussed and used extensively in the documentation (pdf). So does ...
5
votes
2answers
546 views

Stationarity tests

I have the Time Series package and Mathematica 8. In the package, there is the function 'StationaryQ' to test the stationarity of a known model. Is there any function in Mathematica to test the ...
10
votes
1answer
584 views

How to generate a real-time stream of data?

I'm experimenting with Inversion-of-Control (callback) programming patterns, and I would like a way to generate streams of data at specified real-time intervals. I came up with the illustrated way to ...
7
votes
4answers
1k views

Function to calculate and plot sample variogram

I'm trying to create a function that calculates and plots the sample variogram for a time series. It should take two arguments: data, a time series, essentially a list of reals; k, an integer greater ...
4
votes
1answer
669 views

How to create a histogram of annual events, such as cherry blossom time

I have calculated blooming and ripening times for a specific variety of plant, based on actual temperature data from over 40 years. I would like to create two histograms on a single axis; one for ...
0
votes
1answer
190 views

Generate Chaotic Time Series using CellularAutomaton[]

If possible, How could I generate a chaotic Time series using CellularAutomaton[]. I am especially interested in Rule 30. A friend told me it was possible but I ...
10
votes
5answers
410 views

Finding time-series direction reversal of certain magnitude

I'd like to find the points of a time-series that are a certain distance away (in value, not in time) from the previous maximum, which I consider a reversal. For example, for ...