Using BigQuery Geo Viz to visualize a polygon and its centroid

Using BigQuery Geo Viz,

I am trying to visualize a polygon and its centroid point, simultaneously on the same map.

I tried the ST_UNION function but could not really combine the two GEOGRAPHYs.

Any idea how to visualize both GEOGRAPHYs.

Polygon:
POLYGON((-95.7082555 29.9212101, -95.665885 29.907145, -95.7742806214083 29.82947355, -95.7303605 29.8538605, -95.659484 29.901497, -95.662932 29.894958, -95.8441482 29.7265376, -95.646749 29.905534, -95.810012 29.719363, -95.664174 29.883618, -95.639718 29.910045, -95.652796 29.89204, -95.649915 29.886317, -95.650089 29.881912, -95.641443 29.897741, -95.632912 29.911674, -95.653458 29.864561, -95.635056 29.864431, -95.636533 29.757219, -95.623339 29.903466, -95.597235 29.75367, -95.3636989932886 29.8063167449664, -95.575123 29.920295, -95.3944858832763 29.94248964622, -95.147033 30.013214, -95.586588 29.947706, -95.456723 31.3287239, -95.69717 29.96911, -95.674433 29.943844, -95.678203 29.935184, -95.7082555 29.9212101))

Centroid point:
POINT(-95.5606651932764 30.2307053050834)

Solution

Try selecting the two structures separately and using UNION ALL to gather them in the same visualization:

SELECT ST_GeogFromText('POLYGON((-95.7082555 29.9212101, -95.665885 29.907145, -95.7742806214083 29.82947355, -95.7303605 29.8538605, -95.659484 29.901497, -95.662932 29.894958, -95.8441482 29.7265376, -95.646749 29.905534, -95.810012 29.719363, -95.664174 29.883618, -95.639718 29.910045, -95.652796 29.89204, -95.649915 29.886317, -95.650089 29.881912, -95.641443 29.897741, -95.632912 29.911674, -95.653458 29.864561, -95.635056 29.864431, -95.636533 29.757219, -95.623339 29.903466, -95.597235 29.75367, -95.3636989932886 29.8063167449664, -95.575123 29.920295, -95.3944858832763 29.94248964622, -95.147033 30.013214, -95.586588 29.947706, -95.456723 31.3287239, -95.69717 29.96911, -95.674433 29.943844, -95.678203 29.935184, -95.7082555 29.9212101))') t UNION ALL SELECT ST_GeogFromText('POINT(-95.5606651932764 30.2307053050834)') t

If your intention is to show the geometry and the point in the same visualization it will work as you can see in the image below:

Please let me know if this is what you are looking for