mysql - Creating a polygonal spatial data frame from a feature geometry attribute -

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i have data frame pulled mysql database has feature geometry attribute. example, here's 1 record's value geom attribute: 

'polygon((-113.583914 33.786816,-113.58412 33.787018,-113.58412 33.786816,-113.583914 33.786816))'

all features in table polygons.

i have been searching cannot find clean way create spatial data frame these coordinate strings.


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