Questions on the use of Mathematica to capture data from external sources.

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0
votes
1answer
100 views

Plotting Time Series with call to Wolfram Alpha

I am trying to plot stocks showing some of the local maxima. As an exercise I first tried to load Apple's stock data from Wolfram Alpha with the following code: ...
6
votes
1answer
500 views

Access wi-fi raw data

I would like to know if anyone has any idea of how to access live wi-fi raw data from my computer (in monitor and promicuous mode). I would like to develop a code to get the MAC address of every ...
0
votes
0answers
31 views

Social Media Data, specifying the time interval

I am facing a problem concerning the SocialMediaData function built in Mathematica. I am trying to investigate the WallMostLikedPost over time, i.e I want get the most liked post for the last few ...
1
vote
0answers
55 views

Getting data through a serial port [duplicate]

I need to receive data from a serial port and save it to a list so I can use it later. Since the input will depend on human interaction, My program must keep running and saving as long as data is ...
9
votes
1answer
317 views

Data acquisition from a Measurement Computing USB device

I would like to use Mathematica 9 for to acquire data from a Measurement Computing (MC) USB-201 analog to digital (and other) device for classroom demonstration. I do not have a budget to buy LabView ...
2
votes
1answer
142 views

Is it possible to take data from external database for the CDF embedded in webpage?

I have embedded my CDF in facebook.The data for the CDF should be taken from facebook server or my server dynamically.I tried out but its not working in dynamic code iam not able to access the data at ...
5
votes
1answer
149 views

Problem to plot GDP data coming from Wolfram Alpha

I'm working with economic data and realized that I could extract it directly from WolframAlpha using _Mathematica. So I did it. I extracted the GDP data of the country I'm studying. ...
0
votes
1answer
65 views

Collecting variables from Subscript

I have followings set: t = Transpose[{x[#] & /@ Range[20], RandomInteger[15, 20]}]; Subscript[#[[1]], #[[2]]] & /@ t The code is just to build my set.So ...
3
votes
1answer
189 views

Merging Vertices of a Graph and adding up the edges weights

I have a Weighted Graph of g which looks like this. ...
2
votes
2answers
195 views

Manipulate, Import external table, save as CDF, mail presentation

For my work I do data analysis. Most of these analysis are done on big databases with milions of records. I would like to make a manipulate (or animate) using a external dataset and create a CDF ...
2
votes
1answer
283 views

How to extract Audio Record data form Sound[SystemDialogInput[“RecordSound”] ?

When I set parameter "SoundReg" to collect Audio Steaming data - it's working After that I use Button\["Record"\] In my ...
5
votes
2answers
118 views

Is it possible to verify the accuracy of a file downloaded using URLFetch

Objective: I am trying to save a HTML file using the URLFetch function (native to Mathematica 9 onward). Sometimes the file is huge. Question: Is there a way to check/verify (using the headers or ...
3
votes
2answers
186 views

WeatherData for the 15th day of each month

Suppose we have WeatherData["Helsinki", "MeanTemperature", {{2007, 1, 1}, {2012, 12, 31}, "Day"}] How we can have data just for 15th day of each month?
2
votes
1answer
105 views

Mean of Date variable data

I have hourly registered data as : ...
2
votes
1answer
591 views

Mathematica TCP socket client toward Trading Platform

I'd like to connect Mathematica with my Italian electronic trading platform. To connect I need to open a TCP socket client towards the trading platform and send a string command. The high-level ...
2
votes
1answer
657 views

Excel DDE Link: reading and writing in real time

I'm wondering if it is possible to link Excel and Mathematica in real time, so that Mathematica can be used as a computing and "storage" tool. Suppose I have an Excel spreadsheet with an active DDE ...
0
votes
0answers
53 views

Can I perform Terminology Extraction in Mathematica?

Can I perform Terminology Extraction in Mathematica? More specifically, can I extract candidate terms from a corpus of text documents? The corpus is made up of different text types and formats. ...
6
votes
2answers
246 views

Is it possible to import data from Google Analytics?

Using Mathematica, is it possible to pull data directly from Google Analytics? Unfortunately, GA exports messy csv files, and I was wondering if there was a direct ...
7
votes
2answers
103 views

How can I recover a graph from a graphical output in a notebook after resetting the kernel?

I have an old Mathematica notebook with an output for a graph structure $G$ I would like to recover. However, the routine for building up the graph is stochastic, so I can't simply rerun the code. ...
0
votes
0answers
29 views

Error in extracting a column [duplicate]

I imported excel data to Mathematica using this command. kuruzD = Import[ "C:\\Users\\TMH\\Documents\\Problem Set 4\\kuruzData.xlsx"][[1]] //TableForm I want to ...
3
votes
1answer
459 views

Read and filter a text file without importing

I have a large text file of a million sections. Each section contains A lines of header and B lines of numeric data. I want to read the first and last line of B from each section (to have a list of 2 ...
3
votes
3answers
171 views

How can I efficiently enter multiple instances of data?

I would like to plot the normal distribution for a population of human heights. My question is how can I input multiple frequencies for the same variable, without writing them out one by one. e.g. I ...
22
votes
2answers
2k views

Streaming Data into Mathematica from a serial port

I'm attempting to see if I can capture an incoming stream of data being transmitted remotely from an arduino device into Mathematica. The plan is to connect some temperature probes to the Arduino, ...
5
votes
1answer
374 views

How to Debug Missing[NotAvailable] error for Social Media Data

I get a Missing[NotAvailable] error message when trying to access Social Media Data using SocialMediaData["Facebook", "Friends"] ...
5
votes
0answers
140 views

How to deal with WebServices error “any is not supported in sequence”?

I am trying to aquire data through Mathematica's WebServices and this example works just fine: ...
2
votes
3answers
318 views

How do I make data retrieved from Wolfram|Alpha persist in a notebook?

I want to store hourly temperature readings retrieved from Wolfram|Alpha in an array in my notebook. If this is not possible, then tell me how to preserve the retrieved data in my notebook, so when it ...
17
votes
1answer
247 views

Getting Mathematica.SE reputation data

I'm asking the following on behalf of Mr.Wizard. On StackOverflow I used the old v1.0 SO API and Mathematica to obtain user reputation data. Now we are no longer a tag on StackOverflow and the v2.1 ...
4
votes
1answer
475 views

Using PutAppend to write large data files

I have a loop which computes a table, tab, of results at each iteration. This table is usually very large and I would like to use ...
3
votes
1answer
349 views

Integrating over data points from an external source (wolfram|alpha and weather)

I moved to another city and the weather sucks. Sometimes I feel like getting sad and so I go to wolfram|alpha and check for example ${}$ ...
5
votes
0answers
90 views

Download binary file bypassing Import/Export? [duplicate]

Possible Duplicate: Downloading files without using Import While attempting to answer my own question I realized that I don't know a way to simply download a binary file to a specified ...
19
votes
3answers
1k views

Download xkcd Click and Drag comic

Inspired by the recent question about xkcd styled plots I started looking at xkcd again and I came across a comic titled Click and Drag. And if you do that, you start exploring a larger drawing. A ...
14
votes
1answer
541 views

Detecting and counting signals in list data: checking pulse rate

Hope this isn't too much of a basic question: I'm looking for some Mathematica functions, but I don't know which ones. Background I recently read about a simple technique for reading your body's ...
7
votes
1answer
300 views

Is it possible to construct a function to make a poor man's Mathematica database?

I have a function that is set up to write to a database with 10-20 standard variables with 10 fields each, but the application is going to a place where database access is not available. Can ...
6
votes
3answers
161 views

Use Slider2D to add data points to a list

This bit of code sets up a list with the first entry already in it -- {{1,1}} ...
18
votes
1answer
1k views

Using ImageCapture to access a USB webcam in linux

Is it possible to access a USB webcam through Mathmatica on Linux? When I run ImageCapture[] I get the following output ...