The parameter 'grid_limits' of function' grid_from_radars' affects the latitude in the grid

[nomatter08]

when i set grid_limits=((0.,20000), (-1000000., 1000000.), (-1000000., 1000000.))，the result looks like move southward

when i set grid_limits=((0.,20000), (-1000000., 1000000.), (-500000., 500000.))，the result looks better and the location of radar is closer to the real situation

I tried to change a lot of parameters and it seems that only this parameter will change the latitude of grid

[rcjackson]

What are the number of points you are using for each direction in the grid in both examples? If you have fewer points spanning a longer distance, you're going to get a less accurate location since the grid will not cover all of the needed points.