[Solved] Mapping Length over each class in EntityClassList["Chemical"]

Questions
,
1

As of now I have to find the individual lengths of each chemical class in this data set individually, but I was looking for a way that I could find the length of each individual chemical class at once.

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2

Hi

Try this

list = EntityClassList["Chemical"];
EntityValue[#, "EntityCount"] & /@ list
3

Thank you so much! Would it be possible that the numerical values in the output have their corresponding chemical class next to them so it is easier to undestand?

4

then you use Thread for both outputs, here is the whole operation

list = EntityClassList["Chemical"];
len = EntityValue[#, "EntityCount"] & /@ list;
Thread[{list, len}]
5

Another option would be to use a singe Map:

Map[
 {#, EntityValue[#, "EntityCount"]} &,
 EntityClassList["Chemical"]
 ]
6

Thank you both. This is exactly what I was looking for!

7

As an Association

AssociationMap[EntityValue[#, "EntityCount"] &, EntityClassList["Chemical"]]