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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1answer
164 views

CountryData fails for some tags and properties

The problem has gone, presumably resolved by WRI. See kirma's comment. I'm using Mathematica 10.0.2 for Mac, and for the first time just tried CountryData. ...
25
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0answers
382 views

Summer Solstice Spurious Correlations Challenge

I came across this hilarious web site that has charts of bizarre "correlations" between disparate categories. Results like this: In the spirit of my summer solstice shedding spuriously earned rep. ...
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0answers
184 views

Mma 10.2 `Alphabet` and `LanguageData` give different and both erroneous list of letters

The new function Alphabet introduced in Mathematica 10.2 gives the wrong list of letters for the Spanish language in my system (Windows 7 64 bits). ...
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115 views

How to get star coordinates for a given time

In the documentation of StarData, there is an example that shows how to get the altitude of Sirius at a given time (in the horizontal coordinate system). However, ...
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0answers
31 views

CountryData vs EntityProperty: why do different data access methods produce different results?

Illustrative example: using CountryData we are told the data is missing, but we can nevertheless access it via an ...
5
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0answers
196 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 ...
4
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0answers
69 views

Is there a problem with some of the curated Star Data?

I'm not really sure if I'm doing something wrong, or if there's a problem with some of the Mathematica curated data on stars. My problem is this: I'm trying to find the location (latitude and ...
4
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0answers
58 views

Combining separate CHColorStructureDiagrams to form one molecular structure

I am trying to attach a fructose molecule to a sucrose molecule by using information obtained from the following ...
4
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0answers
205 views

FinancialData property value at a given date

I was trying to get the volatility value of a specific equity on a given day. Based on the Mathematica Help, the syntax is ...
3
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0answers
55 views

Possible bug in fetching price index data?

I seem only able to fetch price index data for the U.S. For example, the following fails (Mathematica 10.2): ...
3
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0answers
35 views

What is the definition of “ConceptWeight” in WordData?

The documentation states that the "ConceptWeight" property is a rough estimate of semantic importance, I'd like to know how this is computed exactly, is there any way to find out?
3
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0answers
561 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: ...
2
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0answers
44 views

Inaccurate Heliocentric coordinates of PlanetaryMoonData

I have noticed that the heliocentric coordinates obtained with PlanetaryMoonData are very inaccurate. Fore example, consider the Galilean moons of Jupiter: ...
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0answers
188 views

Compact Map of USA with Alaska and Hawaii shown under California

Is there a more efficient way to include Alaska and Hawaii on a compact US map than the combination of the three GeoGraphics with Insets shown below? ...
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0answers
50 views

Is there a hidden location-type property for TropicalStormData?

TropicalStormData gives you time-series data on tropical storms. In the property list there is not a location (geographic coordinates) property listed. There are ...
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49 views

GDP Per Capita isn't right when called from CountryData?

CountryData["USA", "GDPPerCapita"] gives $\$45230.20$ per person per year in July, 2015. But ...
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0answers
37 views

PlanetData “VelocityAroundSun” giving inconsistent answers

My goal is to create a ListPlot showing the Earth's orbital speed over the course of a year, with one datapoint per day. I'm seeing problems long before I even get to the point of plotting the data! ...
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0answers
147 views

Failure of CountryData due to connectivity?

Today I started researching the "Four colours theorem" and to do so I need data, regions for example. I tried using the following line: ...
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0answers
183 views

Why is CountryData function failing?

I am unable to get the CountryData function to work. I have tried FinancialData, CityData, ...
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0answers
44 views

FinancialData, comparing returns accounting for different holidays

At the moment I am trying out the FinancialData feature of mathematica. I am a bit struck with the problem of dropping returns for dates of a list of different stocks not being equal for all stocks ...
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0answers
58 views

How to access data from WHO Mortality Database

How to do I access the online data from the WHO Mortality Database, which is free to download. What are the Mathematica specific commands to directly load the xls file that can be obtained from this ...
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0answers
80 views

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 ...