Hi,
Vectorizing a map yourself will take up a lot of effort, better keep it through the Meridian team.
That being said, you can do some work on vectorizing a map yourself, but there are a lot of layers (the map advanced formatting on Meridian will give you an idea: http://docs.meridianapps.com/developers/map_layer_styling) that you would have to pay attention to and format and set in the right order. Assuming you have the right map vectorized, you will still need to save it in the right format and upload it using the Meridian maps APIs.
A good start would be to download an already vectorized map, check it out and edit it, then upload it to a new building to test your results.
Otherwise, stick to vectorizing through the Meridian team by creating your building/floor and then requesting the conversion by sending an email with your map file and map ID reference that you've created - instructions appear when you create that new floor on Meridian (it's free as long as you have an active subscription).
#ALE#LocationServices#Meridian