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"""----------------------------------------------------------------------------
Name:         $[ActiveDoc-Name]
Description:

Requirements: ArcGIS Desktop Standard (10.2)
              Python Version:   2.7

Inputs:

Outputs:

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def hasSelection(lyr):
    ''' Check whether specified layer has a selection. '''
    import arcpy
    desc = arcpy.Describe(lyr)
    if len(desc.FIDSet) == 0:
        # Layer has no selection
        return False
    else:
        # Layer has a selection
        return True

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def setNAN():
   minx = float('nan')
   
def checkNAN():
  import math
  if math.isnan(minx):
    return 1

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def RotateXY(x,y,xc=0,yc=0,angle=0,units='DEGREES'):
    """Rotate an xy cooordinate about a specified origin
    returning a new xy cooordinate

    x,y      xy coordinates
    xc,yc   center of rotation
    angle   angle
    units    "DEGREES" (default) or "RADIANS"
    """
    import math

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def OpenLink([Hyperlink_Log], [Hyperlink_Log2], [Hyperlink_Photo], [Hyperlink_LabTest], [Hyperlink_Televiewer], [Hyperlink_Geonor], [Hyperlink_Instrumentation] ):
   """Open multiple hyperlinks fields via python"""
    import webbrowser
    import os

    mxd = arcpy.mapping.MapDocument("CURRENT")
    basePath = mxd.hyperlinkBase

    paths = [Hyperlink_Log], [Hyperlink_Log2], [Hyperlink_LabTest], [Hyperlink_Photo], [Hyperlink_LabTest], [Hyperlink_Televiewer], [Hyperlink_Geonor], [Hyperlink_Instrumentation]
    for path in paths:

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def isCADLayer(layer):
    ''' Returns True if a layer is a CAD layer.
    '''
    desc = arcpy.Describe(layer)
    if hasattr(desc, "dataType") and (desc.dataType == "FeatureLayer"):
        describeTable = arcpy.Describe(desc.catalogPath)
        if describeTable.dataElementType == "DEFeatureClass":
            describePath = arcpy.Describe(describeTable.path)
            if hasattr(describePath, "dataType")
            and (describePath.dataType == "CadDrawingDataset"):

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Expression = "'{0}'".format(arcpy.GetParameterAsText(3)) # single quoted string literal 

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def getUniqueFieldValuesFromTable(in_table, in_field_name):
    '''
    Use SearchCursor to return a list of unique values in the specified field
    
    in_table:      The feature class, layer, table, or table view <string>
    in_field_name: Single field name <string>
    returns:       pythonList
    '''
    pySet = set()
    with arcpy.da.SearchCursor(in_table, in_field_name) as cursor:

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import os

def get_workspace(in_feature_class):
    ''' Get the workspace for a feature class'''
    workspace = os.path.dirname(in_feature_class)
    if [any(ext) for ext in ('.sde', '.gdb', '.mdb') if ext in os.path.splitext(workspace)]:
        return workspace
    else:
        return os.path.dirname(workspace)

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import os
import arcpy

def create_output_gdb(parent_folder, gdb_name):
    """Creates a new gdb in the folder
    """
    arcpy.AddMessage("Checking output workspace...")
    gdb_path = os.path.join(parent_folder, gdb_name + ".gdb")
    # Generate a unique name if the gdb already exists
    if arcpy.Exists(gdb_path):