Questions tagged [entity]
Questions about Entity expressions and the use of standardized representations of specific real-world entities.
95
questions
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47 views
How to delete downloaded data from a particular entity class?
I have a function below which downloads an entire entity class as a local copy on the system in a single query, so any further queries don't have to be send to the online server.
...
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29 views
Use of EntityFunction in AggregatedEntityClass
EntityFunction doesn't appear to be working as documented when explicit properties are not included in the body of the function.
First register the titanic ...
2
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1answer
53 views
How to get company dataset in original currency?
I have obtained the financial data of a company using Entity["Company", ...]["Dataset"]:
...
3
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1answer
45 views
Is there a limit to the amount of curated data that can be retrieved?
Mathematica provides access to curated data on many entities. For access to some of the curated data (e.g. current exchange rates), users must have an internet connection. Is there a limit (i.e. quota)...
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1answer
36 views
How to get time series data from Entity[“Company”,…]?
In my notebook, I have a cell that displays AT&T's revenue for one particular year (the year 2010):
...
2
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1answer
39 views
How to get a list of all known classes?
I'd like a function that returns a stringified entity at random. I can't seem to find a full list of classes from which to sample:
0
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1answer
32 views
Why do some Administrative Divisions fail to translate into Entities?
I am trying to prime the following list into a database to run some geo-stats:
...
4
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1answer
44 views
How can I create my own entity type with dated properties?
I tried to create my own entity type in which entities have dated properties.
But I can't find any helpful documentation on that matter.
And every try failed.
I tried
...
2
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0answers
44 views
How to use SPARQLExecute for SPARQLSelect on Entities?
When using SPARQLSelect on Entity Types the entire entity store is downloaded to the local cache.
For example,
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0answers
23 views
Qualifier in EntityStore
I am trying to construct some entities by myself. However, I found the examples given by the documents quite confusing. Can someone explain how to use the qualifiers? The example in the documentation ...
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0answers
45 views
EntityStore vs. ResourceData
I find that I have a local file, "General-Topology-EntityStore.wl" (and I don't recall exactly how I got it!).
Evaluating
...
0
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1answer
62 views
How to get the image data of AnatomyPlot3D?
If I have a 3D plot, I can get its image data by using ImageData as below:-
...
2
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0answers
39 views
GeoRegionalValuePlot optimization
I have the following piece of code that plots a colormap by zipcode.
Zips is an array of zip codes (All in the US mainland) and testscore is just some made up data for testing purposes.
The list of ...
1
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1answer
67 views
From Free-Form linguistic input to function expression to calculate spheroid surface
I need to calculate the surface area of an oblate spheroid. My first step is to get the surface equation from Free-Form input. But I have trouble converting to a WM function and replace the focus ...
4
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3answers
85 views
EntityValue timeline
I try to use EntityValue to get the returns of a stock from January 1st 2019 to today. When I use
...
10
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1answer
244 views
Is it possible to restrict the arguments for a function to a specific entity type?
I'm trying to wrap my head around how to work with Mathematica for building (computable) domain specific knowledge. One particular thing I didn't quite understand is how to create symbols for ...
4
votes
2answers
512 views
How can I get the time zone of a US ZIP code?
There does not seem to be a direct way to extract the time zone for a ZIP code. Currently, I am first mapping the ZIP code to the states, and then getting the time zones for those states.
...
2
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0answers
61 views
Extracting info from Entities
I am trying to look up data of entities, but I imagine I'm not doing it right, or have misunderstood the structure.
Here, I try the extract the values of the new SI defining constants, which are ...
9
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1answer
133 views
How do I find the list of values for an EntityProperty qualifier?
Cross-Post on Wolfram Community
I have an EntityProperty and I know how to get its list of qualifiers. Now how do I figure out the possible values these can take ...
4
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1answer
61 views
How do I find the list of available qualifiers for a given EntityProperty?
If you read the docs for EntityProperty you see it can be used with EntityValue to perform qualified selections of data, ...
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2answers
181 views
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1answer
108 views
Convert Entity Property to String
I am doing some work with my own EntityStores as well as the built in Wolfram Entities. After pulling a subset of data, I am wanting to structure it as a dataset ...
6
votes
1answer
65 views
How to submit new state-by-state information to the Data Repository
I'm interested in algorithms for apportioning seats of Congress to states after every decennial Census, for which I'm using Mathematica to test different functions. To this end, I wrote a Notebook ...
3
votes
1answer
56 views
Matching Aspect Ratios between two GeoGraphics with Entities for GeoRange
I'm making a basic 50-state map of population (using a log scale). Given the usual crucible of figuring out what to do with Hawaii and Alaska, I thought I would make the same ...
4
votes
2answers
90 views
4
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1answer
269 views
How to convert entity to string?
I have an entity city. For example, I run {city} = GeoNearest["City", GeoPosition[{41.8, -87.7}]] and then I got The entity "...
5
votes
1answer
55 views
Why does Short not affect entity lists?
Short seems not to have an effect on the display of the following list of entities, while it works fine on a list of strings. Why is this?
Here's the copyable code:...
4
votes
1answer
53 views
Unable to convert degree to number in LatitudeLongitude and “City” Entity
I am trying to convert degree to number for some mathematical transformation. Taking London as an example, the following codes can convert the degree into a number without any problems:
Codes that ...
6
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2answers
646 views
How to take top 10 built-in function
WolframLanguageSymbol has a property named Frequencies, such as
...
3
votes
1answer
92 views
How to get the satellites launched on a certain day
After getting all satellite names using:
allSatelliteObjects=SatelliteData[];
I see there are a lot of them:
...
1
vote
1answer
110 views
list of dates for vernal equinox
I'm trying to get a list of dates and times of the vernal equinox for the last 30 years (or some other time interval). I'm flailing about and really have gotten nowhere. When I've tried typing ...
2
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0answers
47 views
Timeout in implicit Wolfram|Alpha calls, but WolframAlpha works
In general we expect this to work:
Quantity["Speed of light"]
Quantity[1, "SpeedOfLight"]
And it does because it can make use of Wolfram|Alpha.
Oddly, though, ...
1
vote
1answer
53 views
Why some result of CityData is List[entity]?
Why one entity is a List Object?
There are many such cases.
They are in one level/one region/province.
...
8
votes
1answer
303 views
Change units in PlanetData[“Earth”, “Diameter”] from miles to km
When I enter
AstronomicalData["Earth", "Radius"]
I get Quantity[6.3674447*10^6, "Meters"]
I would have preferred kilometers, ...
7
votes
0answers
125 views
Mistake in Mathematica administrative division data in Africa
I would like to, firstly, report that, I think there are a number of mistakes in the administrative level data. Or, at least, it is not clear to me why there should be differences in some definitions ...
3
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0answers
488 views
Why “Inception V3 Trained on ImageNet Competition Data” have 1001 outputs?
There are 6 pre-trained models on ImageNet in NetModel.
...
3
votes
1answer
86 views
What is the syntax for `EntityProperty` `“Date”` and `“DateRange”` Qualifiers?
Does anyone know how to get EntityProperty "Date" and "DateRange" qualifiers to return data?
...
5
votes
3answers
410 views
How to add city markers to a map of Germany?
I'm trying to draw markers for a list of Germany ZIP codes onto a map. Following the official documentation, it seems as if using GeoMarkeron values like
...
4
votes
3answers
193 views
Generate the complement of the Earth's land mass polygons
I would like to get polygon covering of all water area of earth. I though of doing by inverting
Polygon[EntityClass["Country", "LandMasses"]]
How do i invert ...
2
votes
1answer
75 views
ImageIdentify category specification
There is an instance in the reference for ImageIdentify were a category is specified. Here it is:
...
5
votes
1answer
107 views
Cases and Entity
When extracting the "name" of an Entity one has CommonName. Good. Before I discovered this, I simply applied a rule like:
...
24
votes
1answer
781 views
Can I build my own curated data function?
I love the huge curated datasets, but they don't cover everything. I have my own huge dataset which is too much to distribute as an EntityStore so is there a way to ...
2
votes
1answer
83 views
Listing Persons of a Certain Occupation using PersonData
I am trying to generate a list of people that Mathematica knows about that have a certain occupation.
Using the PersonData[] command I can get a list of all 285,...
5
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0answers
84 views
Geo data load issues: Texas is missing from GeoRegionValuePlot in v11, but only when mapping US states
UPDATE: this is not a global Mathematica issue, but a data load issue on a local machine. Does anyone know how to clear Geo cache and reload the data?
I've also noticed on this machine that ...
4
votes
1answer
163 views
How to download Entity data for an interval of dates
I am interested in downloading "TropicalStorm" data for hurricanes with the highest "WindSpeed" occurring in the years 1990 ...
3
votes
0answers
69 views
Use of ContainsAny in EntityClass
The documentation page for EntityClass states that
Property values in implicitly defined entity classes may make use of Quantity (and intervals of Quantity) for ...
4
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0answers
115 views
List of mathematicians
How to make a list of mathematicians by using Mathematica?
There are $284387$ person entity in Mathematica, but I need only mathematician entity
I tried something like this
...
4
votes
1answer
52 views
How to discover an EntityProperty's qualifiers?
EntityPropertys have a qualifier form in the documentation,
$\text{EntityProperty}\left[\text{type},\text{pname},\left\{\text{qual}_1\to \text{val}_1,\text{qual}_2\...
8
votes
0answers
189 views
Using EntityStore and related functions in a NoSQL-database scenario
In a lot of engineering tasks one ends up with massive amounts of .txt or .csv files from various measurement systems (oscilloscopes, temperature probes etc.) that usually end up on a local or central ...
1
vote
1answer
88 views
Using the Knowledgebase if you don't know the exact name of an EntityProperty
In the Wolfram Knowledgebase, how would you find the precise name of an EntityProperty, without scrolling through the whole list of them?
For example, suppose I ...
