Étant donné que le script lié à la fin du code d'Aaron ne peut être utilisé que pour les tampons carrés et n'utilise pas le nouveau module arcpy.da, j'ai écrit un script qui peut être utilisé pour créer des tampons rectangulaires. Sur un ensemble de données de points aléatoires de 10 000, il s'est terminé en 10 secondes:
import os, arcpy
point_FC = arcpy.GetParameterAsText(0)
w = float(arcpy.GetParameterAsText(1))
h = float(arcpy.GetParameterAsText(2))
output_FC = arcpy.GetParameterAsText(3)
def rect(coord, w, h):
#Given XY coordinates and rectangle dimensions,
#return a polygon object of a rectangle centered about the point
x,y = coord
w *= 0.5
h *= 0.5
xmin,xmax = x-w, x+w
ymin,ymax = y-h, y+h
poly = ((xmin, ymax), (xmax, ymax), (xmax, ymin), (xmin, ymin))
return arcpy.Polygon(arcpy.Array(arcpy.Point(*p) for p in poly))
#Create output feature class.
spatref = arcpy.Describe(point_FC).spatialReference
folder, base = os.path.split(output_FC)
arcpy.CreateFeatureclass_management(folder, base, "POLYGON", spatial_reference=spatref)
#Get field object for every field in input except OID and Shape.
fields = [f for f in arcpy.ListFields(point_FC) if f.type not in ("OID", "Geometry")]
for field in fields:
arcpy.AddField_management(output_FC, field.name, field.type, field.precision,
field.scale, field.length, field.aliasName,
field.isNullable, field.required, field.domain)
#Get field names to be inputted to cursors.
#Need SHAPE@XY token to read point coords and SHAPE@ token to write polygon coords.
fnames = [f.name for f in fields]
fields_in = fnames[::]
fields_out = fnames[::]
fields_in.append("SHAPE@XY")
fields_out.append("SHAPE@")
#Create buffers and write attributes to output FC, if any.
count = int(arcpy.GetCount_management(point_FC)[0])
arcpy.SetProgressor("step", "Buffering...", 0, count, 1)
with arcpy.da.SearchCursor(point_FC, fields_in) as Scursor, arcpy.da.InsertCursor(output_FC, fields_out) as Icursor:
for i,row_in in enumerate(Scursor):
#"Convert" point to rectangle
arcpy.SetProgressorPosition(i)
feature = list(row_in)
feature[-1] = rect(feature[-1], w, h)
Icursor.insertRow(feature)