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Why are the local government area (LGA) shapes displayed in Google Looker Studio's Geo chart (using Filled areas) so low quality / fidelity, even when zoomed in? Basically each area has insufficient vector data to display it in a usable manner.

My data source is a CSV with two columns:

  1. LGA (type = Geo > Country subdivision (2nd level))
  2. n (type = Aggregation > Sum)

For what it's worth, the shaded areas are in the right places. This screenshot shows Inner West, Woollahra and Randwick, for example.

Geo chart showing poor quality areas

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I figured this out myself. The Geo map has a limit of 1 million vertices:

https://support.google.com/looker-studio/answer/9713352?hl=en#geo-limits&zippy=%2Cin-this-article%2Cconfigure-a-filled-area-map

Once I filter out anything outside New South Wales, this cuts down on the number of polygons required to be drawn and it improves the quality / fidelity of the LGA shapes:

enter image description here

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    Good job figuring it out! Oct 20, 2023 at 9:40

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