Since version 7, Mathematica includes gigabytes of curated data relevant to many different fields, including physics, chemistry, graph theory, finance, geography and many more.

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A list of cities in a time zone meeting a specified criterion

Is there a way to get Mathematica V9 or Wolfram|Alpha, given a city as input (e.g., "Urbana Champaign, IL"), to return a list of cities that fall in a time zone ...
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1answer
100 views

Using DeleteCases with multiple AstronomicalData properties

I am attempting to use AstronomicalData and DeleteCases together to remove invalid cases of two properties while listing the ...
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2answers
107 views

Computing lists using AstronomicalData

Edit: Initially in my question I asked how I could search the database of AstronomicalData["Exoplanets"] and return 2 filtered values that only contained valued ...
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1answer
59 views

WeatherData function problem: “NonMetricValue” returns undated list of values

In the WL example below, WeatherData[] returns an undated list of values when I add the annotation "NonMetricValue." ...
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2answers
528 views

Optimization of a portfolio of stocks

I would like to use Mathematica to perform an optimization of a portfolio composed by 10 stocks. I did the first part to compute yields and expected yields, but I don't know how to finish the ...
19
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2answers
299 views

Can Mathematica determine part-of-speech for each word in a text?

I've found that WordData has a database of English words and their possible parts of speech. But some words are ambiguous, e.g. result can be a verb or a noun: ...
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1answer
69 views

What's wrong with my implementation on CountryData

I was wondering, *for which countries is the proportion of Phone line users to population greater than or equal to that of the United States?* This is what I inputted below, but the list of countries ...
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0answers
87 views

Any useful operations on LinkedIn data?

I have connected to LinkedIn using SocialMediaData, but the information seems to be limited to my connections and their IDs. How is this interesting? Is there a way to load a network using the ...
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0answers
30 views

How do I plot cities on a Map? [duplicate]

Right now, I have the 20 cities with the most population in the world, given by the lines of code ...
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2answers
119 views

How do I find the most populous cities in the world?

I am attempting to plot the most populous cities on a world map. Currently, I have the line of code: ...
3
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1answer
76 views

CountryData et al. and associated InputStream

Quick update I found a way to solve this in webMathematica, using CollectStreams. But still, below problem leaves me puzzled, I would very much like to learn how ...
5
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3answers
212 views

How do I find the number of countries that have a type of industry?

I am trying to find the number of countries that have a certain type of industry. Currently, I have this code: ...
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0answers
94 views

Why is CountryData function failing?

I am unable to get the CountryData function to work. I have tried FinancialData, CityData, ...
5
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3answers
195 views

Drawing CountryData groups

I'm sure I'm overlooking something obvious, but I can't draw groups of countries. Here are two countries and two country groups: ...
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0answers
61 views

Is FinancialData for India available? [duplicate]

FinancialData["IndiaNSE", "Members"] // Shallow gives ...
3
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0answers
541 views

Curated data sometimes delivered in undefined units

This question may better go to Wolfram, but as it came up on the weekend, I thought I'd try here first. Take a look at the following: ...
3
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2answers
169 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
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1answer
93 views

Mean of Date variable data

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

Importing data from Excel for DateListPlot

I am importing data from Excel and plotting it with DateListPlot. My code is ...
2
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2answers
176 views

City/Country Names by GeoLocation

How do I get the city and country names from the output of FindGeoLocation[] {lat, long} ?
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3answers
90 views

DateListPlot input entry problem

I imported some data from Excel and got the following for my date and values: {{{1986, 1, 2, 0, 0, 0.}, 25.56, ""}, {{1986, 1, 3, 0, 0, 0.}, 26., ""} It seems ...
17
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1answer
534 views

xkcd: Geohashing in Mathematica

On May 21, 2008, an xkcd comic proposed a method for creating a random, local meeting place that can't be determined until the day of the meeting. This method is usually used for xkcd fan events, ...
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1answer
104 views

WeatherData acquirement in ListStreamPlot

I am trying to show the wind streams in a geographic area as following code for a range of time.Even if it works for realtime data but it doesn't work for range of time.I am filtering and also taking ...
16
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2answers
853 views

Weather Maps with Mathematica

I've been trying to set up a weather map with Mathematica similar to what NOAA publishes in their website. So far I've been successful to bring the data over and extend it across the whole picture ...
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1answer
128 views

Problem with ListContourPlot feeding data format and WeatherData

With following code I am trying to show the mean wind speed patterns for a few geographic locations. ...
0
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1answer
148 views

Using LatticeData to fill a space with spheres in a face-centered cubic (fcc) lattice packing arrangement

I have a large sphere of radius $R_1$ which I would like to pack with $N$ smaller radius of radius $r_2<R_1$ arranged in a face-centered cubic (fcc) packing arrangement (i.e. Kepler's optimal ...
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2answers
148 views

Indicating the probability that a weather datum is above/below some given value on a geographic map

With help of the previous questions here, I am analyzing weather data as daily MeanWindSpeed of some cities with the following code: ...
4
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1answer
164 views

AstronomicalData and Planetary Heliocentric (x,y,z) Velocity Components

I'm trying to find data on the heliocentric velocities of planets in our solar system and was directed to Mathematica's AstronomicalData in a previous topic. ...
17
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1answer
854 views

The Orbit and Perigee of the Flamsteed comet

Historical context This year we have the 330-th anniversary of the Battle of Vienna - one of the great formative events of European history, it took place on September 12, 1683. Kara Mustafa, Grand ...
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1answer
467 views

financial data behind Wolfram|Alpha and Finance Platform

I need to price 23,000 securities from 1999 to 2007, and they are surprisingly hard to find on subscription-based services, like Bloomberg LP, ThomsonReuters or S&P CapitalIQ offerings. Probably ...
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1answer
256 views

How do I use FinancialData to obtain company revenue and income?

I'd like to make a plot of a company's revenue and income over time. I can do this via Wolfram Alpha pretty easily, just by searching "Ford revenue and earnings from 2000 to 2012". As such I can, if ...
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0answers
101 views

Access curated or locally stored data with curated data functions?

Say I have a toy package, something like: ...
6
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2answers
232 views

Why is CityData[All, “Coordinates”] failing?

When I evaluate CityData[All, "Coordinates"] Mathematica returns {Missing["NotAvailable"], Missing["NotAvailable"]} ...
3
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0answers
143 views

Does Mathematica support collaborative filtering and recommendation systems?

Does Mathematica support collaborative filtering and recommendation systems such as can be found in Apache Mahout? I could not find any resources about advanced data mining techniques, beyond ...
10
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1answer
300 views

Can a LatticeData image be displayed in a space filled fashion

I'd like a FaceCenteredCubic image as in the in LatticeData docs, but space packed, and cropped on all the boundaries, so that it illustrates the geometry of the calculation that leads to the ...
14
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4answers
866 views

World plot without borders between countries

I would like to plot the world map without the countries' borders and just the coastlines (in Mathematica 8). I need to overlap a temperature contour plot on the world map. When I plot country data ...
2
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1answer
313 views

define the range of Longitude from 0-360 in the World plot from CountryData

How can I change the Longitude range to 0-360 in the such plots? ...
4
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1answer
151 views

How to view all graphs available in GraphData?

Is there a "gallery" view of all the graphs available in GraphData? I realize that some graphs may not lend themselves to such representation (e.g. some may have ...
6
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1answer
829 views

Interactive steam tables and phase diagrams in Mathematica

I teach an undergraduate course in Thermodynamics and I would love to use Mathematica to demonstrate the various engineering processes that involve the expansions and compressions of steam and common ...
6
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1answer
191 views

Under what conditions does FinancialData return a ::notent message?

I tried retrieving FinancialData for a few companies but when I tried doing it for NTDOY, I couldn't. As of 25/12/2012, querying ...
5
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1answer
185 views

How can I download price information for multiple stocks at once?

I have a list of stock tickers. Is it possible to download price information over a period of time all in one go, or download other types of information across multiple stocks in one go?
12
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5answers
3k views

Standard deck of 52 playing cards in curated data?

I am not sure how to find out what all is included as curated data. For example, are the individual images of each of the 52 cards in a standard deck of playing cards included? If not, is there a way ...
2
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2answers
118 views
9
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1answer
171 views

Why do DateList, DateString, and AstronomicalData ignore $TimeZone?

My reading of the documentation for DateList and DateString lead me to believe that both functions use ...
6
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2answers
333 views

Problem achiving effect I want with ColorFunction

I want to create a plot showing historical annual maximum and minimum temperatures. I've figured out how to get 10 years of historical temperature data from Wolfram|Alpha. The plot below shows the ...
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1answer
160 views

Structure of curated data?

Is there a way to programmatically access the structure of curated data present in Mathematica (for each type of information, for example for CountryData or ChemicalData) that would allow access to ...
12
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2answers
342 views

How is AstronomicalData interpreting its date arguments?

It is easy to confirm that the AstronomicalData is not interpreting its arguments as UTC (or "GMT", which is, in any case, ambiguous) dates by verifying that the ...
12
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1answer
215 views

Is there a way to get AbsoluteTime to correctly report absolute time differences?

Absolute time supposedly reports the "total number of seconds" between two dates, but it does not. For example because of the leap second applied at 2012-06-30T23:59:60Z ...
5
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2answers
315 views
6
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1answer
278 views

Find the list of weather stations for specified cities

I wrote some code which retrieves temperature data from three cities every hour for five days. My problem is that the default station from which WeatherData[] gets ...