map does not fit inside its view in vega-lite about vega-lite HOT 3 OPEN

upon tweaking the width and size, like making the box rectangular for a rectangular piece of land, I can make all small maps appear within the layer boundary .
but then when I layer circles for instance at some latitude longitude points, small maps explode out of the layer boundary, as if
the land shape was shrinked before but adding the circle mark with a scale shared with other maps prevent map to be shinked within its layer boundary

from vega-lite.

Maybe it is possible to register these composite projections, like http://geoexamples.com/d3-composite-projections/ into Vega, see https://vega.github.io/vega/docs/projections/#register how to do this.

from vega-lite.

thanks for the tip
the solution was to set the fit parameter of the projection channel, with the bounding box of the map in geojson format .
https://vega.github.io/vega/docs/projections/

I thought this would have been automatic

nevertheless if the layer width and height ratio is too far from the land shape, it will not display

from vega-lite.