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Can you put a marker in the center of a polygon?
As the “ google.maps.LatLngBounds ” object has “ getCenter “, we can now put our marker in the center of the minimum bounding box that fully contains the polygon: This gives us an approximation of the polygon’s centroid point. However, trying this out on a map shows we have a problem…
How to tell if a point is inside a polygon?
To do this we use: to calculate the location of the next point to try, along with: which tells us whether that point is inside the polygon or not. The image in figure 1 shows a test polygon with the bounding box also drawn on the map for debugging.
Can you put a marker inside a circle on Google Maps?
While working with Google Maps recently, our team needed to be able to drop map markers inside various different types of shapes drawn on the map. This is simple for circles and rectangles as each have a defined center point.
Can You Drop a marker on a circle?
This is simple for circles and rectangles as each have a defined center point. For more complex polygons however, a “sensible” location to drop a marker is not necessarily as obvious nor directly provided by the Google Maps API.
When to use point features instead of polygons?
For instance, built-up areas that are less than 20 square miles in area may need to be point features rather than polygons. The Production Polygon To Point tool allows you to add points to selected polygons from a single feature class.
Why was the option of converting polygons to points eliminated?
The option of converting polygons to points was eliminated because the point placement for a polygon partially inside the map might often fall outside of the map. However, this workaround sounded promising (and coincided with the approach our client was using):
How to get the first vertex of a polygon?
To get the first vertex, for example, use polygon.exterior.coords [0]. Note that the first and last points are the same; if you want a list consisting of the vertices without that repeated point, use polygon.exterior.coords [:-1]. You can convert the CoordinateSequence (including the repeated vertex) to a list of points thus: