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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2
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1answer
185 views

“ReliefMap” and “ContourMap” unable to download error

This question may be closed as "too localized". I post in the event other users have had this error and resolved it. The problem: inability to use "ReliefMap" or "ContourMap" options for ...
1
vote
0answers
57 views

ThermodynamicData missing [closed]

Yesterday I was using ThermodynamicData[] and all was fine, today I try to use it and I get: Missing[NotAvailable] Does ...
1
vote
0answers
71 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 ...
15
votes
1answer
231 views

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

Bug introduced in 10.2 and fixed in 10.3 The new function Alphabet introduced in Mathematica 10.2 gives the wrong list of letters for the Spanish language in my ...
2
votes
0answers
44 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! ...
2
votes
0answers
154 views

Can't get map of Italy from Geographics [closed]

On Mathematica 10.1 Desktop version, I'm trying: GeoGraphics[Polygon[Entity["Country", "Italy"]]] but it doesn't get the Italy location and throws this error: ...
5
votes
0answers
92 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 ...
25
votes
0answers
422 views

Summer Solstice Spurious Correlations Challenge [closed]

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. ...
0
votes
0answers
66 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 ...
0
votes
1answer
184 views

Financial data source change

So I am using the command FinancialData["name"] to get the live price for any given stock. The openings are very important in my studies that I am conducting and it ...
5
votes
1answer
139 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: ...
7
votes
2answers
158 views

How to set the timeout value for *Data functions

I haven't measured this precisely but it seems the default timeout value for retrieving EntityValues with *Data functions is in ...
2
votes
1answer
97 views

How to find µ (Gravitational constant mass product) with PlanetData?

I would like to use PlanetData to get µ, the product of the Gravitational constant G and a ...
2
votes
2answers
92 views

Is there any way to pull interest rates, or an interest rate curve, with FinancialData[]?

Let's say I want to know the 5 year swap rate and the 10 year swap rate right now, is there a way to get this with FinancialData[]?
8
votes
2answers
449 views

Generate a list of symbols for the planets

I would like to generate a list of the symbols for the planets to include in a nice table with other data. How can I programmatically generate (eg. using a pure function) the symbols from a list of ...
3
votes
1answer
147 views

How to change the atom size of LatticeData [duplicate]

Using the "Image" property of LatticeData, I can generate representation of lattice structures (like the first basic example ...
2
votes
2answers
107 views

Incompatibility of CountryData[] between v. 9.0 and 10.1

There seems to be an incompatibility between the representation in CountryData[] for versions 9.0 and 10.1. The documentation on ...
1
vote
2answers
50 views

Want apply “Position” in my list of Entities

I want apply "Position" in my list of Entities: Entity /@ GeoEntities[CountryData["Belarus"], "Lake" | "Canal"]["Position"] ...
14
votes
2answers
467 views

How to ContourPlot a function of the coordinates on the Earth's surface on a map projection

There are two similar questions (this and this), but one is too specific and the other is apparently not clear and has no answers. I'll try to make the question more complete. Suppose you have a ...
-1
votes
1answer
73 views

The energy released from burning one gallon of gasoline

How can I get this information from Mathematica or Wolfram|Alpha?
4
votes
1answer
58 views

Accessing Coordinates of Astronomical Data, e.g. Declination of all Galaxies

I am trying to access the coordinate information of all galaxies, stars, etc, available to the new astronomical data incorparated to Mathematica. However, the suggested (documented) approach fails. ...
2
votes
1answer
235 views

How do I download and export data from many weather stations?

I tried this code, which downloads data from several weather stations. ...
19
votes
1answer
584 views

Right Ascension and Declination in astronomical functions

In the process of answering this question, I was forced to confront the various astronomical coordinate systems used by Mathematica. Background In astronomy, positions of celestial objects (stars, ...
6
votes
2answers
422 views

How do I plot my country map with weather data stations?

I've tried this code, but I can't plot the coordinates in my country map. ...
6
votes
0answers
255 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. ...
6
votes
1answer
99 views

Why is CurrencyConvert so slow?

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15
votes
3answers
258 views

How to keep downloaded curated data

If I run StarData[], Mathematica will download the entire database from its server, which is quite a lot of data and takes some time: "Downloading entities ...
7
votes
0answers
135 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, ...
1
vote
2answers
126 views

What is the URL of the site used by ExampleData?

When ExampleData is evaluated, Mathematica downloads data from a Wolfram Research Data server. What's the exact domain of this, though? I bet it's ...
4
votes
1answer
194 views

MovingMap maps to second level unexpectedly

I'm trying to build a financial indicator in mathematica. I import some historical data ...
1
vote
1answer
164 views

Missing elements using FinancialData

I have a list of stock symbols which I selected with FinancialData["Menbers"] that looks like the following list: ...
0
votes
3answers
83 views

Delete nested lists with Missing[“NotAvailable”] [duplicate]

I have a list of stock symbols and related information containing some entries Missing["NotAvailable"]. I would like to delete all nested lists which contain a ...
3
votes
3answers
325 views

Median household income for each county in Maryland

I found that Wolfram|Alpha knows the median household income for every county in the US. I wanted to get a list of all counties in Maryland, and the median income in each county. The only way I could ...
1
vote
1answer
93 views

Accessing chemical property data for specific conditions?

There is a wealth of data for various chemicals available through Mathematica. For instance: ...
5
votes
2answers
374 views

Using GraphData to generate all directed graphs with n vertices

Using Combinatorica, it was possible to generate unlabeled (non-isomorphic) directed graphs of $|V|=n$. Here the example is for $n=4$: ...
15
votes
1answer
195 views

FinancialData[], what does “members” include?

I am doing some manipulation of historical stock prices on the NYSE. I want to go through each stock. To find the number of entities on NYSE, one can use: ...
6
votes
2answers
274 views

How can I output the coordinates of a city in coordinates of the Mercator projection?

On Mathematica version 8, I would like to use CountryData and CityData to mark Paris on a polygon map of France in the Mercator ...
16
votes
1answer
363 views

GeoGraphics: problem with GeoPosition in shifted projections

Bug introduced in 10.0.0 and persisting through 10.4.1 A remark about the answer: My work around is only nice for simple cases with points. More general should include proper polygons splitting on ...
4
votes
1answer
133 views

Cloud cover fraction

I need to make use of Mathematica's WeatherData functionality, the CloudCoverFraction property, specifically. However, it does ...
1
vote
1answer
90 views

FRED api reports all data in given month with same date

When I use the FRED package to retrieve weekly data, all of the data points for a given month have the date as the last day of the month instead of the date for the week of the data. ...
3
votes
0answers
42 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?
2
votes
1answer
134 views

How do you get a country's GDP per capita in Euros?

Right now, I'm getting the data in U.S. Dollars and converting it to Euros like this: ...
2
votes
1answer
98 views

Improving tab view for knots

This code: ...
6
votes
2answers
205 views

Finding out all undocumented values for “Properties” in XxxData[] functions

No, XxxData[] is not a new function in Mathematica 11. I am just using that name for all curated data-related functions. As you know, ...
4
votes
2answers
366 views

Should we invest in Apple?

Ticker[comp_String] := Interpreter["Company"][comp] /. Entity[_, x_] :> x ticks = Ticker /@ {"Apple", "Google"} {"NASDAQ:AAPL", "NASDAQ:GOOGL"} ...
6
votes
1answer
528 views

How to download and combine S&P 500 stock prices

I want to download historical S&P 500 stock prices and combined them into one big file, having only one column of date referencing all stocks. Here is what I have do so far. ...
2
votes
0answers
310 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? ...
5
votes
1answer
518 views
1
vote
1answer
53 views

Off[FinancialData::notent] fails on first run but works thereafter

Off[FinancialData::notent] fails on first run but works thereafter. So what good is it in this case? Is there a trick to force first time success? I've tried ...
8
votes
1answer
292 views

Mathematica AppData folder is taking up too much space

I recently made a small app that I had issues with. I'm pretty sure it ended up being because of all the curated data to load. My problem now is that under the Windows 8.1 folder ...