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

The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now! Learn more

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
Power BI DataViz World Championships

Power BI Dataviz World Championships

The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now!

November Power BI Update Carousel

Power BI Monthly Update - November 2025

Check out the November 2025 Power BI update to learn about new features.

FabCon Atlanta 2026 carousel

FabCon Atlanta 2026

Join us at FabCon Atlanta, March 16-20, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.