Questions tagged [entity]

Questions about Entity expressions and the use of standardized representations of specific real-world entities.

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7
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1answer
46 views

Dataset function and related gadgets not ideal for large datasets

There's a performance bottleneck when using these types of functions. If I had a large CSV file and were to import it as a regular 'unstructured' CSV, I save almost half the time importing the file, ...
3
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0answers
52 views

Obtain complete list of built-in graphical objects, and split them into groups?

I would like to obtain the complete listing of built-in graphical objects (which can be used in Graphics or Graphics3D) ...
7
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2answers
154 views

How can I filter an EntityClass by _not_ having a property?

With Mathematica 12, I can create implicit Entity Classes like: I can also filter for having exactly a specific property, like so It seems quite trivial, but I can't seem to filter by a property not ...
2
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0answers
28 views

Using Wolfram Language for Non-Relational (NoSQL) Data Storage

I've got a relatively small amount of personal data I'd like to try to store and manipulate within the WolframWorld (tm forthcoming). It's not enough data to spin up a MongoDB instance, but since each ...
0
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0answers
33 views

How to filter by stock exchange in Financial EntityClass?

I have seen example of filtering the EntityClass. For example, to get the companies with the largest p/e ratios: ...
1
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0answers
37 views

how to download and clear entity framework data?

Firstly I want to know when executing queries like, ...
3
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0answers
49 views

ZipCode data for historical dates

I am trying to get historical values of certain properties of a ZIPCode entity. To get the current data I write: ...
3
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0answers
72 views

How complete is the financial statement data?

Has anyone here looked at CompanyData or Entity["Company",All]? Are both of them the same data but just a different interface ...
2
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0answers
35 views

Implicitly defined EntityClass does not work

When studying how I can use the Wolfram Data Framework on a database on my private computer I found a curious problem. I created an ...
1
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0answers
31 views

When working with derived entity class what is the EntityValue equivalent of EntityList?

Suppose I am working with the following derived entity class. ...
2
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2answers
57 views

How to merge two entity classes with same structure?

Suppose I am looking for file formats associated with markup languages. Lets say I would like to first find out about the ones which are web associated. I look at the ...
2
votes
1answer
73 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. ...
0
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0answers
40 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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0answers
85 views

Converting Datasets into EntityStores: best practice?

The advent of the family of *edEntityClass functions in V12 looks very promising. Dataset and its related queries are ideal for ...
2
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2answers
75 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
55 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)...
1
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1answer
45 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): ...
3
votes
1answer
48 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
34 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: ...
17
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1answer
342 views

What are the benefits of Entity Classes for Databases?

To me, using the older database functionality is much simpler: ...
4
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1answer
63 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 ...
7
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1answer
110 views

How to do a database query on substrings?

With the package DatabaseLink I can open a connection to my MYSQL database. Then I can use SQL commands like ...
2
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0answers
46 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, ...
1
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0answers
32 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 ...
5
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0answers
58 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
77 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
59 views

GeoRegionValuePlot 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
vote
1answer
71 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
92 views

EntityValue timeline

I try to use EntityValue to get the returns of a stock from January 1st 2019 to today. When I use ...
6
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0answers
132 views

Benefits of using the high level entity framework over raw SQL

Has anyone that has used both SQL particularly TSQL used in Microsoft SQL Server and Wolfram Database integration into its Entity framework, provide some particular examples where the high level ...
10
votes
1answer
246 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
517 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
68 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
votes
1answer
165 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
votes
1answer
69 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, ...
7
votes
2answers
197 views

How to use an EntityClass

The two formats documented for EntityClass are ...
1
vote
1answer
126 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
70 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
58 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
96 views

How to get the input string of Entity as output?

I have the following codes:- ...
4
votes
1answer
323 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
56 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
votes
2answers
648 views

How to take top 10 built-in function

WolframLanguageSymbol has a property named Frequencies, such as ...
3
votes
1answer
93 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
117 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
51 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
58 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
307 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
127 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 ...