Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Level up your Power BI skills this month - build one visual each week and tell better stories with data! Get started

Reply
rdegr
Helper I
Helper I

category.source.type.underlyingType

I can't find a lookup for the values in this field, can anyone point me in the right direction?  Thanks!

1 ACCEPTED SOLUTION
jppp
Continued Contributor
Continued Contributor

The `category.source.type` has to values that determine the real type if you are really interested: the `primitaveType` and the `extendedType`.

 

Both are enums and a pretty accurate definition is available at:

https://github.com/avontd2868/PowerBI-visuals/blob/c0278829a474f2b3f4dec1c8f0adb41fc4814fbf/src/Clie...

https://github.com/avontd2868/PowerBI-visuals/blob/c0278829a474f2b3f4dec1c8f0adb41fc4814fbf/src/Clie...

 

In case of the screenshot Ignat: the primitiveType is 3 (`Double`) and extendedType 259 (`Double`).

And to determine the difference between a `Double` and `Decimal` is the extendedType property: `259` vs `258`

 

-JP

View solution in original post

6 REPLIES 6
v-viig
Community Champion
Community Champion

Not sure if understand the issue well. Do you want to detect column type?

 

Ignat Vilesov,

Software Engineer

 

Microsoft Power BI Custom Visuals

pbicvsupport@microsoft.com

Yes, exactly.  This has numeric codes, I'd like to know what they map to.

v-viig
Community Champion
Community Champion

To detect column type please use metadata.type.numeric

 

image.png

 

Ignat Vilesov,

Software Engineer

 

Microsoft Power BI Custom Visuals

pbicvsupport@microsoft.com

Other parts of the API appear to distinguish "double" from "decimal".  So that "valueEncoded" for a numeric might be digits followed by an M or a D (or L for integer).  How to distinguish "double" from "decimal"?

jppp
Continued Contributor
Continued Contributor

The `category.source.type` has to values that determine the real type if you are really interested: the `primitaveType` and the `extendedType`.

 

Both are enums and a pretty accurate definition is available at:

https://github.com/avontd2868/PowerBI-visuals/blob/c0278829a474f2b3f4dec1c8f0adb41fc4814fbf/src/Clie...

https://github.com/avontd2868/PowerBI-visuals/blob/c0278829a474f2b3f4dec1c8f0adb41fc4814fbf/src/Clie...

 

In case of the screenshot Ignat: the primitiveType is 3 (`Double`) and extendedType 259 (`Double`).

And to determine the difference between a `Double` and `Decimal` is the extendedType property: `259` vs `258`

 

-JP

Helpful resources

Announcements
April Power BI Update Carousel

Power BI Monthly Update - April 2026

Check out the April 2026 Power BI update to learn about new features.

Fabric SQL PBI Data Days

Data Days 2026 coming soon!

Sign up to receive a private message when registration opens and key events begin.

New to Fabric survey Carousel

New to Fabric Survey

If you have recently started exploring Fabric, we'd love to hear how it's going. Your feedback can help with product improvements.

Power BI DataViz World Championships carousel

Power BI DataViz World Championships - June 2026

A new Power BI DataViz World Championship is coming this June! Don't miss out on submitting your entry.

Top Solution Authors
Top Kudoed Authors