Since version 7, Mathematica includes gigabytes of curated data relevant to many different fields, including physics, chemistry, graph theory, finance, geography and many more.
33
votes
4answers
2k views
How to make a 3D globe?
There are many ways to create a 3D Earth that is rotatable (see here, here, related here), but most of them have some drawbacks. These issues mainly stem from either ...
25
votes
3answers
448 views
Is there a Mathematica API for the functions.wolfram site?
Is there a Mathematica API for the functions.wolfram site?
If there's not, has anyone implemented a web scraper for it?
For example it would be nice to be able to access
...
20
votes
3answers
309 views
Is it possible to invoke the OEIS from Mathematica?
I had always wondered if there might be a way to write a function, which I'll call OEISData[], that more or less works as a curated data function for The On-Line ...
16
votes
2answers
407 views
Built-in Mathematica data: are they cached? how to speed up the loading?
Mathematica has numerous built-in data for science and math. Every first call to a data function in a new Mathematica session will "re-initialize indices" (download the data). Is there a way to store ...
15
votes
2answers
490 views
Highlighting individual countries on a world map
Consider the following list of countries which I would like to highlight on a world map:
...
15
votes
4answers
485 views
Finding all dictionary words that can be made with a given set of characters (Wordfeud/Scrabble)
This is a slightly more involved variant of this recent question. By sheer coincidence I happened to have been building a Wordfeud (Scrabble clone) game in Mathematica.
My interactive Wordfeud ...
15
votes
1answer
146 views
How to save ChemicalData queries so that they are available immediately on notebook load?
If I put some viscosity (or density, ...) lookups in my notebook, such as:
...
15
votes
1answer
287 views
CountryData and the areas of the world
If I add the WaterArea and the LandArea of the world, I get the same number as if I asked for the total area of the world in the first place:
...
13
votes
4answers
441 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 ...
13
votes
1answer
220 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 ...
12
votes
4answers
370 views
Calculate proportion of values for dates
At work, we were discussing when is it the best time to change to winter tires for bikes and/or cars.
Using WeatherData[] and ...
12
votes
1answer
215 views
Find elements in a decay chain using IsotopeData
I am trying to write a program using the Mathematica function IsotopeData, but am finding the code troublesome. Due to my (relative) familiarity with Python, I am ...
12
votes
2answers
299 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
votes
1answer
184 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
...
11
votes
5answers
1k 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 ...
11
votes
1answer
393 views
Why does CUDAQ (from CUDALink) download data from Wolfram servers?
I understand why functions like ElementData or CountryData need to download up-to-date data when first launched. However, when ...
10
votes
1answer
158 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 ...
10
votes
2answers
529 views
Background image in a polygon / CountryData
Is it possible to use a background image in a polygon without rasterizing the polygon?
I tried with textures, but they seem to be viable only for simple polygons.
I want to put a flag as the ...
10
votes
1answer
219 views
How does Mathematica know my location?
On the AstronomicalData page on the online reference it says for
AstronomicalData["Sun", "NextRiseTime"]
that it finds the next rise time for the Sun from your ...
9
votes
4answers
337 views
Why do some CountryData flags render at low resolution?
This question is related to data analysis introduced here
Why do some flag images from the CountryData dataset render at very low resolution both in Front End and ...
9
votes
1answer
148 views
How can I convert the dates returned by FinancialData into decimal representation?
I'm trying to run a regression using Fit on the output of FinancialData["SPY", "Jan. 1, 2011"]. However, the dates returned ...
9
votes
1answer
160 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
votes
1answer
138 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 ...
8
votes
2answers
867 views
Problem with Financial Data
I'm following http://reference.wolfram.com/mathematica/ref/FinancialData.html
I get the following:
In[6]:= DateListLogPlot[FinancialData["^DJI", All]]
During ...
7
votes
2answers
165 views
What do AstronomicalData's “SetTime” and “RiseTime” values refer to?
What astronomical event do AstronomicalData's "NextRiseTime", "NextSetTime", ...
7
votes
1answer
243 views
Computing Many Slow I/O Operations
In working on a custom stock screener, I often need to run mathematica code like this:
...
7
votes
2answers
211 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 ...
6
votes
2answers
229 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 ...
6
votes
3answers
256 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
votes
3answers
209 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 ...
6
votes
1answer
183 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
votes
1answer
378 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
votes
1answer
181 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 ...
6
votes
2answers
196 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
votes
3answers
286 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 ...
5
votes
2answers
210 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
191 views
Problems getting clean sunrise, sunset, civil, nautical and astronomical twilight data
If in a notebook you enter:
...
4
votes
2answers
137 views
Why is CityData[All, “Coordinates”] failing?
When I evaluate
CityData[All, "Coordinates"]`
Mathematica returns
{Missing["NotAvailable"], Missing["NotAvailable"]}`
but when I evaluate ...
4
votes
1answer
110 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 ...
4
votes
1answer
106 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?
4
votes
0answers
94 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
...
4
votes
0answers
136 views
How 'good' is WeatherData data
I am considering using calls to WeatherData for wind speed, precipitation, etc. It seems the data are accurate, and samples compare well with, for example, my local weather reports, however, I am ...
4
votes
0answers
118 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
...
4
votes
0answers
99 views
Creating a PolyhedronData[] structure for custom polyhedra
The PolyhedronData[] structure is wonderfully rich. I would like to create data for my own polyhedra, not any of the many that Mathematica provides. Is this ...
2
votes
2answers
85 views
Using an inequality to select elements from a list and then plotting the results
Okay, here is the information that I have.
...
2
votes
1answer
150 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?
...
2
votes
1answer
133 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 ...
2
votes
0answers
58 views
Access curated or locally stored data with curated data functions?
Say I have a toy package, something like:
...
2
votes
0answers
104 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 ...
1
vote
1answer
437 views
List all financial Assets data conditionally
I would like to get all the Financial Data that Mathematica respecting those constraints :
The assets for which there are at least 20 years of daily price quotations.
Or that have s price for each ...
