I would like to display a simple tree canopy using four circles to represent the spread N,E,S and W about a point plotted in a point shapefile. The four circles will have the respective diameters of the N, E, S and W in the fields in the attribute table. The offset of the circles will be half of the N, E, S and W values in their respective directions. Has anyone done this? Can anyone tell me exactly how to using ArcGIS please? Cheers, in anticipation, Paul Wallace.
Hi Paul, off the top of my head, Add four new fields to your data and calculate the offsets N, E, S and W (e.g. Eoffset = Xcoord + E/2) then generate a point at each location (Eoffset,Ycoord) and buffer them by field (selecting the diameter) and dissolve
Thankyou for that. I've done the first part, however the bit I thought would be easy, making new points from co-ordinates created in the fields of the attribute table I can't do! Could you help me out with that please? Cheers, Paul Wallace.
You could create a new layer from x,y values stored in a table in ArcCatalog (right-click layer) or you could plot points using the 'Go To XY' tool in ArcMap and I think you could convert those into a dataset. Just the methods I thought of quickly, there are probably more and perhaps easier methods.