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 ...
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:
...
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 ...
12
votes
1answer
183 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
...
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 ...
8
votes
2answers
862 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 ...
10
votes
2answers
527 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 ...
16
votes
2answers
406 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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
6
votes
2answers
228 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?
...
2
votes
1answer
149 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?
...
