Azure Map incorrectly delimits county poligon.

Question

Azure Map incorrectly delimits county poligon.

Salvador Celía 20

Using Azure map visual on power bi desktop, some counties ("Departamento ......" in province of Corrientes, Argentina seems to be incorrectly delimited:

"Departamto Saladas" seems to be missing

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"Departamento San Roque" has incorrect delimitation (light blue are is missing from it)

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Tried several tips and also a reference layer, but didnt work. How can I fix these issues?

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Answer 1

Hi Salvador Celía,

It looks like you're having some issues with the Azure Map visual in Power BI, specifically with the incorrect delimitation of counties in the Corrientes province of Argentina. Here are a few things you can try to address the delimitation issues:

Check Data Categorization: Ensure that your data fields in Power BI are correctly categorized. In the Data view, select the column representing the county and set its Data Category to County. Similarly, ensure the state or province is categorized correctly. Incorrect categorization can lead to issues in geocoding. For more details, check this guide on categorizing geographic fields in Power BI.

Reference Layers: Since you mentioned trying reference layers without success, double-check the data source you're using for those layers. It could be that the reference layer you're utilizing does not have the most accurate or up-to-date boundaries.

Check Coverage Issues: Azure Maps is generally comprehensive, but there might be some regions that are not as accurately represented. You can refer to the Azure Maps Render service coverage documentation here to see if there are known limitations for Argentina.

Provide Feedback: If you still encounter inaccuracies and believe they need fixing, consider utilizing the feedback tools in Azure Maps to suggest edits, as mentioned in the documentation about providing data feedback.

Hope this helps! If you're still facing issues, feel free to provide more details, and we can come up with further solutions.

Please don't forget to close up the thread here by upvoting and accept it as an answer if it is helpful.

Thankyou!

Answer 2

Salvador Celía 20

Hello @Anshika Varshney thank you for feedback. But i coudn´t solve the issue.

Geo data is properly cathegorized in model (most of counties are properly rendered with native azure map tool)

Reference layer geojson is properly rendered in map, but geolocation of data in its poligons is somehow distorted. On the other hand i posted comments on bing map regarding incorrect counties boundaries, but i guess it will no t solve my issues soon.

is there any other possible solution?

Anshika Varshney 3,795 Reputation points Microsoft External Staff Moderator

2025-12-03T15:12:54.2533333+00:00
Hello Salvador Celía,
Thank you for sharing your feedback. I truly apologies if the initial support did not fully meet your expectations.

Since the reference GeoJSON layer renders correctly but data points appear distorted inside polygons, the issue is likely related to coordinate precision or projection mismatch rather than categorisation.

Possible steps to try:

Validate CRS (Coordinate Reference System): Azure Maps expects WGS84 (EPSG:4326) for GeoJSON. If your data uses a different projection, re‑project to WGS84 before upload.

Check polygon winding order: Incorrect ring orientation or missing closing coordinates can distort rendering. Use a GeoJSON validator to confirm geometry integrity.

Simplify or normalise geometry: Overly complex polygons or high‑precision coordinates can cause misalignment. Tools like geojson‑simplify or ogr2ogr can help.

Compare with Azure Maps Data Source: If using a custom data source, ensure the feature properties match the expected schema and that longitude/latitude order is correct.

Test with minimal sample: Render a single polygon and point to isolate whether distortion is systemic or data‑specific.

Please let me know If these steps don’t resolve the issue, I can help with, I’ll be glad to provide further clarification or guidance.

Thankyou!
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Azure Map incorrectly delimits county poligon.

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