The sixth edition of my how to use Wikimapia shows you how to turn a place marker into a polygon that fits your location. (Images are clickable for larger versions.)
Here is Green Lake in Seattle, WA. The lake is obviously not a square. With the addition of polygons, we can now fit the place marker to fit the lake.
Click on the place marker you want to turn into a polygon. Go to the menu in the upper left corner and select “Resize Polygon” to get rid of the boring square.
You will then be greeted with your place marker outlined in red with movable handles.
You have a few options for changing the shape. My recommendation is to move the four corners into the edges of your location. That is somewhat confusing, I know, use the above picture as an example. This isn’t the only way to move things, this is just how I start it. You will have to play around with things to get a feel for it.
The next step is to add more points simply by licking the new locations where you want the point. For something roundish (like Green Lake) you will have to add lots of points, for something mostly square, you won’t have to do much. When you have got all your points marked, click “Save Polygon” at the bottom of your screen.
Once it is saved, you can roll your mouse over the place marker and you will see it outlined in green.
Even when you zoom out, if you roll over the location, it will be outlined in green.
The Matt’s Wikimapia Blog “How To” Series:
How To #1: Adding a New Place
How To #2: Upcoming Places
How To #3: Pictures and Comments
How To #4: Adding Wikimapia and Google Maps to your Website
How To #5: YouTube in Wikimapia!
How To #6: Adding Polygons