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maptastik/randomFCSample.py

Last active November 26, 2018 14:02
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Create a random sample from a dataset based on OBJECTID...not perfect, but a good start!
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randomFCSample.py
import arcpy
import numpy as np
def randomFCSample(fc, fd='sample_fd', sample_field='OBJECTID', sample_pct=10):
count_class = arcpy.GetCount_management(fc)
count = int(count_class[0])
random_vals = np.random.choice(count, int(count*(sample_pct/100)))
arcpy.MakeFeatureLayer_management(fc,
fd + "_" + str(sample_pct) + 'pct',
sample_field + ' IN ' + str(tuple(random_vals)))
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