How to get multiple session maps in one step

[wangyuanbiubiubiu]

Now I want to merge three mission maps ，But how can I get multiple session maps in one step , as mentioned in "multi session use case"?My current practice is to run rovioli three times, and then merge the maps.

[mfehr]

That's how you get a multi-session map, you record and build maps from multiple sessions then merge them. Have a look at the wiki.

[wangyuanbiubiubiu]

I know how to merge it, but My question is how to build a multi-session map in one step. For example, if I have 3 sessions in a multi-session map, I need to build the map three times. I want to ask if the code can now get a map of three sessions in one step.