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Then, you will use the flatten function to transform the array of array into an array (a recursive function borrowed from http://stackoverflow.com/a/15030117)

Then, you will use the flatten function to transform the array of array into an array (a recursive function borrowed from https://stackoverflow.com/a/15030117)

You will see that some results have wrong coordinates (0.0000000, 0.0000000). It's due to the original content.

You will see that some results have wrong coordinates (0, 0). It's due to the original content.

You will see that some results have wrong coordinates (0.0000000, 0.0000000). It's due to the original content with missing coordinates replaced by this default values in geojson.io website.

You will see that some results have wrong coordinates (0.0000000, 0.0000000). It's due to the original content.