HI Wu, Thanks for the info and quick response but after trying to plot several datasets and repeat the process around 20 times I could do it but but something to say. The radius of the beach ball in WGS84 is 1 point=2 metres, or the same 1 km=500points. This does not match with what you say in your email,,,,, something wrong? Anyhow, if I want beachballs of 25 km of diameter to display in regional maps of 1:6.000.000 I need to put 12500 points in the Rad. min1. Moreover, what really is the difference between Rad.min1 and Rad.m8? Thanks a lot for this tool!!! Cheers, Pedro Pedro Martinez Duran
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