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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391 views

How to provide your own example data for a custom package?

A nice feature of the mathematica documentation is the copious use of ExampleData in illustrating functionality. I would like to provide some example data for a ...
9
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2answers
301 views

WordData for other languages

Mathematica already includes dictionaries for a lot of languages. What I am looking for is a handy semantic/grammatic database for Hungarian, just like WordData for ...
9
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1answer
281 views

How do I determine astronomical transit times?

Mathematica, through the "legacy" Scientific Astronomer package, used to have the ability to easily determine accurate transit times of astronomical objects simply, with ...
9
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3answers
423 views

Why is AstronomicalData so slow?

I'm having trouble getting some pretty simple functions using AstronomicalData to perform at anywhere near the speed I need them to. For example, I have many ...
8
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3answers
353 views

“NotAvailable” and “NotApplicable” data points returned by WeatherData[]

I am trying to use ListVectorPlot in combination with WeatherData and CountryData to show ...
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2answers
446 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 ...
8
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1answer
2k 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 ...
8
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1answer
331 views

Find a word's linguistic pronunciation

Is there a way to get a word's linguistic pronunciation given the word as a string? I would like a function LingusticPronunciation such that, for example, ...
8
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1answer
290 views

Visualizing nested lists for easier human understanding

When interacting with Mathematica, I often find myself staring blankly at waves of curly braces, trying to understand how data is organized hierarchically. For example, the beginning of the result to ...
8
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1answer
249 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 ...
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2answers
3k 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 ...
7
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4answers
309 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: ...
7
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2answers
267 views

What do AstronomicalData's “SetTime” and “RiseTime” values refer to?

What astronomical event do AstronomicalData's "NextRiseTime", "NextSetTime", ...
7
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1answer
609 views

Why does Mathematica's date for the battle Agincourt differ from the US Navy's?

If I ask Mathematica for the Julian Date for the battle of Agincourt with WolframAlpha["battle of agincourt date"] it reports ...
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621 views
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153 views

Determining FinancialData for Countries

How do I determine the FinancialData for Australia. For instance the one for USA follows as: FinancialData["NYSE", "Members"] ...
7
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1answer
326 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 ...
7
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1answer
94 views

Duplicated output from chemical curated data

I just discovered something rather odd while using chemical curated data in Mathematica. I tried to extract EdgeRules for some molecules and some molecules gave me ...
7
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1answer
278 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 ...
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0answers
89 views

Mathematica and Wolfram Alpha - Long data series [duplicate]

Let's say I want a long series of data with the Mexican peso / US dollar exchange rate. The old code I used back in the day was FinancialData["USD/MXN", All] ...
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41 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 ...
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0answers
128 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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2answers
380 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
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2answers
494 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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2answers
556 views

Remove country flags that match a certain image pattern

I wanted to create the flag you create when you average over all the flags of the world, for this little post: medium ...
6
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2answers
200 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, ...
6
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3answers
618 views

Getting all the countries' flags and then using them as chart labels?

What's the code to list all the world's flags? CountryData["G8", "Flag"] works to get those particular flags, but what about all the world's flags? ...
6
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2answers
209 views

How to I extract the element name of a chemical compound in a string?

Say I have a compound Fe3O4, and I want to separate the name of elements and number. The code I write for separate number is ...
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2answers
348 views

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

When I evaluate CityData[All, "Coordinates"] Mathematica returns {Missing["NotAvailable"], Missing["NotAvailable"]} ...
6
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3answers
278 views

Determining the dates of days

I'm trying to use WeatherData[] to give me (not sure how) the temperature, humidity, wind-speed, cloud cover... at a certain location. I only want the information ...
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3answers
129 views

How to find the standard names of chemicals in ChemicalData?

When I try to get info on acetic acid with the ChemicalData function there are only "aceticAcid$l^{1}oxidanylEster" and ...
6
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1answer
554 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 ...
6
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2answers
249 views

Wolfram Language symbols by their Ranks

I'd like to get the top 50, the bottom 50 and an ordered list of all Wolfram Language symbols based on their "Ranks". With ...
6
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2answers
240 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 ...
6
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3answers
452 views

Export Graph to PDF

I know that I exported Graphs to PDFs before but it doesn't seem to work any more. I tried K5 = GraphData[{"Complete", 5}] Export["K5.PDF", K5] And I get a PDF ...
6
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1answer
614 views

Constructing primitive cell using information from ChemicalData

I would like to construct a primitive cell (figure shown) and possibly the two-dimensional layout (figure from here) using the following input. Any clues as to how this can be done? ...
6
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1answer
250 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 ...
6
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2answers
321 views

How to choose variables from a list for a function and then use the solution in a subsequent function?

I am trying to calculate heating degree days and cooling degree days and output that information to a table. I am using mathematica's curated data to do this. In text this is what I would like to ...
6
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1answer
97 views

Why is CurrencyConvert so slow?

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6
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2answers
129 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 ...
6
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1answer
95 views

How to provide data to users in a way similar to Mathematica's curated data

How can one go about implementing a custom data backend usable by Mathematica? For example something like CountryData or ...
6
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0answers
237 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. ...
5
votes
2answers
274 views

Why is Neptune missing from AstronomicalData?

An old notebook I've recently started working with has a strange error: Prior to version 8, a figure I generated using Drop[AstronomicalData["Planet"],-1] to ...
5
votes
2answers
1k views

Using ChemicalData to make molecule graphics

$\require{mhchem}$I would like to take the acetone $\cf{((CH3)2CO)}$ and chloroform $\cf{(HCCl_3)}$ molecules that Mathematica's chemical data provides, and plot them together. I want to show how ...
5
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3answers
82 views

Is it possible to get CityData for different years?

Is it possible to get CityData for different years? Or get a year of origin of data in CityData?
5
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3answers
394 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: ...
5
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3answers
78 views

How to ignore year in DateListPlot

I just upgraded to Mathematica 10, and I am trying to get the hang of the new TimeSeries data objects, which are preventing my old strategy of overlaying data from ...
5
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1answer
469 views
5
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1answer
300 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?
5
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1answer
241 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. ...