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Sort the Dinosaurs by Weight

Make a table of dinosaurs, with pictures, sorted by weight.

Run the code to get the list of dinosaurs known to the Wolfram Language:

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This gets a list of dinosaurs and gives it the name dinosaurs. The output is automatically shortened because it’s very long:

dinosaurs = EntityList["Dinosaur"]

There are a lot of dinosaurs in the list:

Length[dinosaurs]

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dinosaurs = EntityList["Dinosaur"]

Get a picture of a dinosaur. Try other dinosaurs:
 

Note: run the code in the previous step first.

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This gives the second dinosaur in the list:

dinosaurs[[2]]

Each dinosaur has a wealth of information associated with it, which you can retrieve with EntityValue. Here’s an image of the second dinosaur:

EntityValue[dinosaurs[[2]], "Image"]

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EntityValue[dinosaurs[[1]], "Image"]

Get the name, an image, and the weight of a dinosaur. Try other dinosaurs:

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Get the weight of the second dinosaur:

EntityValue[dinosaurs[[2]], "Weight"]

Get the name, an image, and the weight of the second dinosaur:

EntityValue[dinosaurs[[2]], {"Name", "Image", "Weight"}]

Sometimes data may be missing. The weight of the first dinosaur is not available:

EntityValue[dinosaurs[[1]], {"Name", "Image", "Weight"}]

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EntityValue[dinosaurs[[2]], {"Name", "Image", "Weight"}]

Make a table of names, pictures, and weights of random dinosaurs. Run the code again to get different dinosaurs:

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Get a random sample of 10 dinosaurs. Run the code again to get a different sample:

RandomSample[dinosaurs, 10]

Get the name, image, and weight of a random sample of dinosaurs:

EntityValue[RandomSample[dinosaurs, 10], {"Name", "Image", "Weight"}]

Format the dinosaur data as a table:

TableForm[ EntityValue[ RandomSample[dinosaurs, 10], {"Name", "Image", "Weight"}]]

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TableForm[ EntityValue[ RandomSample[dinosaurs, 10], {"Name", "Image", "Weight"}]]

Sort the table by weight. Run the code again to get different dinosaurs:

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Weights in the table are both single values, like , and ranges, like . To sort the table by weight, you have to first convert the ranges to single values. You can do that easily with a rule that replaces intervals with their average values (their “means”):

TableForm[ EntityValue[ RandomSample[dinosaurs, 10], {"Name", "Image", "Weight"}] /. Interval[x_] :> Mean[x]]

Now you can sort the data by weight, which is the last element of each entry:

SortBy[EntityValue[ RandomSample[dinosaurs, 10], {"Name", "Image", "Weight"}] /. Interval[x_] :> Mean[x], Last]

Make a table sorted by weight:

TableForm[ SortBy[EntityValue[ RandomSample[dinosaurs, 10], {"Name", "Image", "Weight"}] /. Interval[x_] :> Mean[x], Last]]

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TableForm[ SortBy[EntityValue[ RandomSample[dinosaurs, 10], {"Name", "Image", "Weight"}] /. Interval[x_] :> Mean[x], Last]]

Share It—Put the dinosaur table online, where anyone can visit it.
 

Note: run the code in the very first step first to define dinosaurs.

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Deploy the dinosaur table to the Wolfram Cloud, where anyone can visit it. The table updates each time it’s visited:

CloudDeploy[ Delayed[ExportForm[ TableForm[ SortBy[EntityValue[ RandomSample[dinosaurs, 10], {"Name", "Image", "Weight"}] /. Interval[x_] :> Mean[x], Last]], "PNG"]], "Permissions" -> "Public" ]

Click the link in the output to visit the site. Refresh the page in your browser to get a new table.

Tell the world about your creation by sharing the link via email, tweet, or other message.

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CloudDeploy[ Delayed[ExportForm[ TableForm[ SortBy[EntityValue[ RandomSample[dinosaurs, 10], {"Name", "Image", "Weight"}] /. Interval[x_] :> Mean[x], Last]], "PNG"]], "Permissions" -> "Public" ]
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