def copyPipesegmenttoGascross():
"""
本函数为将管段表中的穿跨越段连同其相关属性写入到穿跨越表中
基本思路：
首先从管段表中选出敷设方式为穿跨越的要素，因此要求填写管段表时，
必须正确填写其敷设方式（如果为穿跨越必须将其敷设方式设置为穿越或跨越）
然后将这些要素连同其属性添加到穿跨越表中
"""
#从管段表中选择敷设方式为穿越/跨越的要素
arcpy.Select_analysis("T_PN_PIPESEGMENT_GEO","ForCross","LAYMODE = 4 OR LAYMODE = 5")
#新建字段映射列表对象
fieldMappings = arcpy.FieldMappings() #创建字段映射对象
fieldTuple=("PIPENAME","PSCODE","PIPESEGNO","MSTART","MEND","USEDDATE","REFOBJSTART",\
"OFFSETSTART","XSTART","YSTART","ZSTART","REFOBJEND","OFFSETEND",\
"XEND","YEND","ZEND","CONSTRUNIT","SUPERVISORUNIT","TESTUNIT",\
"FDNAME","INPUTDATETIME","COLLECTUNIT","COLLECTDATE","NAME")
for FT in fieldTuple:
if FT!="PSCODE" and FT!="PIPESEGNO":
#新建字段映射对象
fm=arcpy.FieldMap()
#将源字段添加入字段映射中
fm.addInputField("ForCross",FT)
#设置目标字段映射
fm_name=fm.outputField
fm_name.name = FT
fm.outputField = fm_name
#将字段映射放入字段映射列表中
fieldMappings.addFieldMap(fm)
elif FT=="PSCODE":
#新建字段映射对象
fm=arcpy.FieldMap()
#将源字段添加入字段映射中
fm.addInputField("ForCross","CODE")
#设置目标字段映射
fm_name=fm.outputField
fm_name.name = FT
fm.outputField = fm_name
#将字段映射放入字段映射列表中
fieldMappings.addFieldMap(fm)
elif FT=="PIPESEGNO":
#新建字段映射对象
fm=arcpy.FieldMap()
#将源字段添加入字段映射中
fm.addInputField("ForCross","NAME")
#设置目标字段映射
fm_name=fm.outputField
fm_name.name = FT
fm.outputField = fm_name
#将字段映射放入字段映射列表中
fieldMappings.addFieldMap(fm)
#将筛选出的穿跨越管段,添加到穿跨越表中
arcpy.Append_management("ForCross","T_LP_GASCROSS_GEO","NO_TEST",fieldMappings,"")
#删除中间文件
arcpy.Delete_management("ForCross")
#对穿跨越进行编码
featureCoding("T_LP_GASCROSS_GEO")
def merge_incl_mappings(fc_and_field_name_list, output_fc):
fc_list = [] # used to keep track of FCs that will be merged
field_mappings = arcpy.FieldMappings()
review_type_field_map = arcpy.FieldMap()
review_type_field_name = 'REVIEW_TYPE'
sub_category_field_map = arcpy.FieldMap()
for fc_and_field_name in fc_and_field_name_list:
return_dict = add_input_fields_to_field_maps(
fc_and_field_name[0], fc_and_field_name[1],
review_type_field_map, sub_category_field_map,
review_type_field_name, fc_and_field_name[2])
fc_list.append(fc_and_field_name[1])
review_type_field_map = return_dict["review_type_field_map"]
outField = review_type_field_map.outputField
outField.name = review_type_field_name
outField.aliasName = review_type_field_name
outField.length = 2000
review_type_field_map.outputField = outField
field_mappings.addFieldMap(review_type_field_map)
outField = sub_category_field_map.outputField
outField.name = 'SUB_CATEGORY'
outField.aliasName = 'SUB_CATEGORY'
outField.length = 2000
sub_category_field_map.outputField = outField
field_mappings.addFieldMap(sub_category_field_map)
arcpy.Merge_management(fc_list, output_fc, field_mappings)
print("Deleting feature classes from memory")
for fc in fc_list:
arcpy.Delete_management(fc)
def find_states(fc, state_fc):
"""Populate *_states field. States fc must have field 'states' with length 255 and state abbreviations within."""
states_field = '{}_states'.format(os.path.basename(fc))
if arcpy.ListFields(fc, states_field):
DM.DeleteField(fc, states_field)
# reverse buffer the states slightly to avoid "D", "I", "J" situations in "INTERSECT" illustration
# from graphic examples of ArcGIS join types "Select polygon using polygon" section in Help
# make a field mapping that gathers all the intersecting states into one new value
field_list = [f.name for f in arcpy.ListFields(fc) if f.type <> 'OID' and f.type <> 'Geometry']
field_mapping = arcpy.FieldMappings()
for f in field_list:
map = arcpy.FieldMap()
map.addInputField(fc, f)
field_mapping.addFieldMap(map)
map_states = arcpy.FieldMap()
map_states.addInputField(state_fc, 'states')
map_states.mergeRule = 'Join'
map_states.joinDelimiter = ' '
field_mapping.addFieldMap(map_states)
# perform join and use output to replace original fc
spjoin = AN.SpatialJoin(fc, state_fc, 'in_memory/spjoin_intersect', 'JOIN_ONE_TO_ONE',
field_mapping=field_mapping, match_option='INTERSECT')
DM.AlterField(spjoin, 'states', new_field_name=states_field, clear_field_alias=True)
DM.Delete(fc)
DM.CopyFeatures(spjoin, fc)
DM.Delete(spjoin)
def join_table_shapefile(table, tablefield, shapefile, shapefield, outputname):
# This functino joins a table and feature class ("shapefile" based on the
# join key in "tablefield" and "shapefield." Saves the joined result as a
# new feature class named "outputname."
# Create spatial dataset to Feature Layer
shape_layer = AutoName(shapefile + '_table')
arcpy.MakeFeatureLayer_management(shapefile,
shape_layer,
workspace=workspace)
# Add a join from the table to the newly created feature layer
temp_join = arcpy.AddJoin_management(shape_layer, shapefield, table,
tablefield, 'KEEP_ALL')
tempout = AutoName('tempout')
# To make the join permanent, copy the result to a new feature class "tempout"
arcpy.CopyFeatures_management(temp_join, tempout)
# Now clean up field names, which at present are messy
# Get names as strings and remove the $ in Excel sheet names
table_name = os.path.basename(os.path.normpath(table))
shapefile_name = os.path.basename(os.path.normpath(shapefile))
table_name = table_name.replace("$", "_")
table_name_plus = table_name + '*'
shapefile_name = shapefile_name.replace("$", "_")
shapefile_name_plus = shapefile_name + '*'
# Get all field names in result feature class
fms = arcpy.FieldMappings()
for field in arcpy.ListFields(tempout, table_name_plus):
fm = arcpy.FieldMap()
fm.addInputField(tempout, field.name)
fname = fm.outputField
fname.name = field.name[(len(table_name) + 1):]
fname.alias = fname.name
fm.outputField = fname
fms.addFieldMap(fm)
for field in arcpy.ListFields(tempout, shapefile_name_plus):
fm = arcpy.FieldMap()
fm.addInputField(tempout, field.name)
fname = fm.outputField
fname.name = field.name[(len(shapefile_name) + 1):]
fname.aliasName = fname.name
fm.outputField = fname
fms.addFieldMap(fm)
arcpy.FeatureClassToFeatureClass_conversion(tempout,
arcpy.env.workspace,
outputname,
field_mapping=fms)
# Delete intermediate products
arcpy.Delete_management(tempout)
return (outputname)
def join_table_shapefile(table, tablefield, shapefile, shapefield, outputname):
# Join luloadtable to bmpparcels to get code from 3-12
shape_layer = AutoName(shapefile + '_table')
arcpy.MakeFeatureLayer_management(shapefile,
shape_layer,
workspace=workspace)
# Add a join from the pollutant-relevant land use type to parcel database
temp_join = arcpy.AddJoin_management(shape_layer, shapefield, table,
tablefield, 'KEEP_ALL')
tempout = AutoName('tempout')
arcpy.CopyFeatures_management(temp_join, tempout)
# Now fix field names.
# Get names as strings and remove the $ in Excel sheet names
table_name = os.path.basename(os.path.normpath(table))
shapefile_name = os.path.basename(os.path.normpath(shapefile))
table_name = table_name.replace("$", "_")
table_name_plus = table_name + '*'
shapefile_name = shapefile_name.replace("$", "_")
shapefile_name_plus = shapefile_name + '*'
# Get all field names in result feature class
fms = arcpy.FieldMappings()
for field in arcpy.ListFields(tempout, table_name_plus):
fm = arcpy.FieldMap()
fm.addInputField(tempout, field.name)
fname = fm.outputField
fname.name = field.name[(len(table_name) + 1):]
fname.alias = fname.name
fm.outputField = fname
fms.addFieldMap(fm)
for field in arcpy.ListFields(tempout, shapefile_name_plus):
fm = arcpy.FieldMap()
fm.addInputField(tempout, field.name)
fname = fm.outputField
fname.name = field.name[(len(shapefile_name) + 1):]
fname.aliasName = fname.name
fm.outputField = fname
fms.addFieldMap(fm)
#fms.addFieldMap(fm)
arcpy.FeatureClassToFeatureClass_conversion(tempout,
arcpy.env.workspace,
outputname,
field_mapping=fms)
# Delete intermediate products
arcpy.Delete_management(tempout)
return (outputname)
def main(input_strm, input_seg, outFGB):
arcpy.AddMessage(
"Transferring original stream reach object IDs to segments features..."
)
# create copy of stream segments, which will include new stream ID field
seg_id = arcpy.FeatureClassToFeatureClass_conversion(
input_seg, outFGB, r"seg_id")
# generate the midpoint for each segmented stream network
arcpy.FeatureToPoint_management(input_seg, outFGB + "\midpoint", "INSIDE")
arcpy.MakeFeatureLayer_management(outFGB + "\midpoint", "midpoint_lyr")
# field mapping for the spatial join (this is from ESRI help resources example)
# create FieldMap and FieldMapping objects
fm_strmOID = arcpy.FieldMap()
fm_segOID = arcpy.FieldMap()
fms = arcpy.FieldMappings()
# set field names from input files
strm_oid = arcpy.Describe(input_strm).OIDFieldName
line_oid = "LineOID" # from seg_id
# add fields to FieldMap objects
fm_strmOID.addInputField(input_strm, strm_oid)
fm_segOID.addInputField(seg_id, line_oid)
# set output field properties for FieldMap objects (this is pure ESRI clunkiness)
strmOID_name = fm_strmOID.outputField
strmOID_name.name = "strmOID"
fm_strmOID.outputField = strmOID_name
segOID_name = fm_segOID.outputField
segOID_name.name = "LineOID"
fm_segOID.outputField = segOID_name
# add FieldMap objects to the FieldMappings object
fms.addFieldMap(fm_strmOID)
fms.addFieldMap(fm_segOID)
# spatial join between midpoints and original stream network polyline feature class
##midpoint_join = r"in_memory\midpoint_join"
midpoint_join = outFGB + "\midpoint_join"
arcpy.SpatialJoin_analysis("midpoint_lyr", input_strm, midpoint_join,
"JOIN_ONE_TO_MANY", "KEEP_ALL", fms,
"INTERSECT", 0.5)
# join midpoints to segmented streams based on shared LineOID
arcpy.MakeFeatureLayer_management(seg_id, "seg_id_lyr")
arcpy.AddField_management("seg_id_lyr", "strmID", "TEXT")
arcpy.AddJoin_management("seg_id_lyr", "LineOID", midpoint_join, "LineOID",
"KEEP_ALL")
arcpy.CalculateField_management("seg_id_lyr", "strmID", "!strmOID!",
"PYTHON_9.3")
arcpy.RemoveJoin_management("seg_id_lyr")
return seg_id
def wetlands_in_zones(infolder, idfield, wetlands, top_outfolder):
# Create output geodatabase in outfolder
out_gdb = os.path.join(top_outfolder, "WetlandsInZones.gdb")
if not arcpy.Exists(out_gdb):
arcpy.CreateFileGDB_management(top_outfolder, "WetlandsInZones")
# Add WetlandHa field if it doesn't exist
if len(arcpy.ListFields(wetlands, 'WetlandHa')) == 0:
arcpy.AddField_management(wetlands, "WetlandHa", "DOUBLE")
expha = "!shape.area@hectares!"
arcpy.CalculateField_management(wetlands, "WetlandHa", expha, "PYTHON")
# Set in memory as workspace. Intermediate output will be held in RAM.
mem = "in_memory"
arcpy.env.workspace = mem
# Make wetlands in memory.
exp = """"ATTRIBUTE" LIKE 'P%'AND "WETLAND_TY" <> 'Freshwater_Pond'"""
arcpy.Select_analysis(wetlands, "wetlandspoly", exp)
# Convert wetlands to points
arcpy.FeatureToPoint_management("wetlandspoly", "wetlands", "INSIDE")
# List extent feature classes
fcs = []
for root, dirs, files in arcpy.da.Walk(infolder):
for file in files:
fcs.append(os.path.join(root, file))
# Spatial Join the wetlands to each extent
out_fcs = []
for fc in fcs:
cu.multi_msg("Creating results for %s" % fc)
name = os.path.basename(fc)
fms = arcpy.FieldMappings()
fmid = arcpy.FieldMap()
fmha = arcpy.FieldMap()
fmid.addInputField(fc, idfield)
fmha.addInputField("wetlands", "WetlandHa")
fmha.mergeRule = 'Sum'
fms.addFieldMap(fmid)
fms.addFieldMap(fmha)
out_fc = os.path.join(out_gdb, name + "_Wetlands")
arcpy.SpatialJoin_analysis(fc, wetlands, out_fc, '', '', fms)
out_fcs.append(out_fc)
# Export feature classes attribute tables to tables
for f in out_fcs:
arcpy.CopyRows_management(
f, os.path.join(out_gdb, "Table" + os.path.basename(f)))
def mapFields(inlayer, infield, mapfield_name, mapfield_alias, mapfield_type): # mapFields function
fldMap = arcpy.FieldMap()
fldMap.addInputField(inlayer, infield)
mapOut = fldMap.outputField
mapOut.name, mapOut.alias, mapOut.type = mapfield_name, mapfield_alias, mapfield_type
fldMap.outputField = mapOut
return fldMap
def _export_od_lines(self):
"""Export OD lines to an output feature class.
Returns:
The full catalog path of the output feature class.
"""
self.logger.debug("Exporting OD lines")
travel_time_field_name = "Total_{}".format(self.time_attribute)
travel_distance_field_name = "Total_{}".format(self.distance_attribute)
fields_to_copy = (self.ORIGINS_OID_FIELD_NAME, self.DESTINATIONS_OID_FIELD_NAME, "DestinationRank",
travel_time_field_name, travel_distance_field_name)
field_mappings = arcpy.FieldMappings()
for field in fields_to_copy:
field_map = arcpy.FieldMap()
field_map.addInputField(self.lines_sublayer, field)
if field == travel_time_field_name:
output_field = field_map.outputField
output_field.name = "Total_Time"
output_field.aliasName = "Total Time"
field_map.outputField = output_field
elif field == travel_distance_field_name:
output_field = field_map.outputField
output_field.name = "Total_Distance"
output_field.aliasName = "Total Distance"
field_map.outputField = output_field
else:
pass
field_mappings.addFieldMap(field_map)
result = arcpy.conversion.FeatureClassToFeatureClass(self.lines_sublayer, self.od_workspace, "output_od_lines",
field_mapping=field_mappings)
self.logger.debug("Exporting OD lines %s", result.getMessages().split("\n")[-1])
return result.getOutput(0)
def fields_to_table(input_data, fields, workspace, output_table):
'''function creates field mappings object then uses the table to tables
conversion tool to export a table to your gdb from your FC fields
:param input_data: your feature class in your geodatabase
:param fields: a list of your field names (string)
:param workspace: your arcpy.env.workspace
:output_table: the name of your output table'''
#create empty field mapping object
fms = arcpy.FieldMappings()
#define fieldmaps and add to field mapping objects (fms)
for field in fields:
fm = arcpy.FieldMap()
fm.addInputField(input_data, field)
output_field = fm.outputField
output_field.name = field
fm.outputField = output_field
# add the field map to the field mappings object
fms.addFieldMap(fm)
#print field map object
print(fms)
#run table to table conversion tool with field mappings parameter
arcpy.TableToTable_conversion(input_data, workspace, output_table, "", fms)
print("converted %s to table" %(input_data))
def fields_to_lower(input_feature_class, workspace, output_feature_class,
output_save_location):
print('Copying input data source' + input_feature_class +
' into memory')
arcpy.FeatureClassToFeatureClass_conversion(input_feature_class,
workspace,
output_feature_class)
field_names = [f.name for f in arcpy.ListFields(output_feature_class)]
print('Building Field Maps')
field_mappings = arcpy.FieldMappings()
for field_name in field_names:
field_map = arcpy.FieldMap()
if field_name != 'Shape': # https://gis.stackexchange.com/questions/30370/arcpy-error-in-adding-input-field-to-field-map
field_map.addInputField(output_feature_class, field_name)
outField = field_map.outputField
outField.name = field_name.lower()
field_map.outputField = outField
field_mappings.addFieldMap(field_map)
print('Field Maps built')
print('Saving ' + output_feature_class +
' to PR_Flags_Phil geodatabase')
arcpy.FeatureClassToFeatureClass_conversion(
output_feature_class,
output_save_location,
output_feature_class,
field_mapping=field_mappings)
print('Saved ' + output_feature_class +
' to PR_Flags_Phil geodatabase')
arcpy.Delete_management(output_feature_class)
def generate_statistical_fieldmap(target_features,
join_features,
prepended_name="",
merge_rule_dict={}):
"""Generates field map object based on passed field objects based on passed tables (list),
input_field_objects (list), and passed statistics fields to choose for numeric and categorical variables. Output
fields take the form of *merge rule*+*prepended_name*+*fieldname*
:params
target_features(str): target feature class that will maintain its field attributes
join_features(str): join feature class whose numeric fields will be joined based on the merge rule dictionary
prepended_name(str): modifies output join fields with param text between the statistics and the original field name
merge_rule_dict (dict): a dictionary of the form {statistic_type:[Fields,To,Summarize]}
:returns arcpy field mapping object"""
field_mappings = arcpy.FieldMappings()
# We want every field in 'target_features' and all fields in join_features that are present
# in the field statistics mappping.
field_mappings.addTable(target_features)
for merge_rule in merge_rule_dict:
for field in merge_rule_dict[merge_rule]:
new_field_map = arcpy.FieldMap()
new_field_map.addInputField(join_features, field)
new_field_map.mergeRule = merge_rule
out_field = new_field_map.outputField
out_field.name = str(merge_rule) + str(prepended_name) + str(field)
out_field.aliasName = str(merge_rule) + str(prepended_name) + str(
field)
new_field_map.outputField = out_field
field_mappings.addFieldMap(new_field_map)
return field_mappings
def SpatJoin_1to1_Closest(Out_Field, Dist_Field, Join_Fields_list, fc_target, fc_join, out_fc, search_distance):
# Create a new fieldmappings object including field maps for all columns in fc_target
fieldmappings = arcpy.FieldMappings()
fieldmappings.addTable(fc_target)
# remove Join_Count and TARGET_FID from field mappings
list = [x.name for x in fieldmappings.fields]
if u'Join_Count' in list:
fieldmappings.removeFieldMap(list.index(u'Join_Count'))
list.remove(u'Join_Count')
if u'TARGET_FID' in list:
fieldmappings.removeFieldMap(list.index(u'TARGET_FID'))
# Create field map for the new column that gets added by spatial join.
FieldMap = arcpy.FieldMap()
# Set input fields from fc_join
for x in Join_Fields_list:
FieldMap.addInputField(fc_join, x)
# Edit output field properties
field = FieldMap.outputField #get field with current properties
if field.type == u'String':
field.length = 3000
field.name = Out_Field
field.aliasName = Out_Field
FieldMap.outputField = field #overwrite field with editted properties
# Add field map to field mappings.
fieldmappings.addFieldMap(FieldMap)
# Run the Spatial Join tool.
arcpy.SpatialJoin_analysis(fc_target, fc_join, out_fc,"JOIN_ONE_TO_ONE","KEEP_ALL",fieldmappings,"CLOSEST",search_distance,Dist_Field)
def get_field_map(src, flds):
"""
Returns a field map for an arcpy data itme from a list or dictionary.
Useful for operations such as renaming columns merging feature classes.
Parameters:
-----------
src: str, arcpy data item or arcpy.mp layer or table
Source data item containing the desired fields.
flds: dict <str: str>
Mapping between old (keys) and new field names (values).
Returns:
--------
arcpy.FieldMappings
"""
mappings = arcpy.FieldMappings()
if isinstance(flds, list):
flds = {n: n for n in flds}
for old_name, new_name in flds.items():
fm = arcpy.FieldMap()
fm.addInputField(src, old_name)
out_f = fm.outputField
out_f.name = new_name
out_f.aliasName = new_name
fm.outputField = out_f
fm.outputField.name = new_name
mappings.addFieldMap(fm)
return mappings
def getFieldMap(self, filename):
outFieldMap = arcpy.FieldMap()
outFieldMap.addInputField(filename, self.nameFull)
outField = outFieldMap.outputField
outField.name = self.nameShort
outFieldMap.outputField = outField
return outFieldMap
def field_map_x(input_fc, field_name, output_field_name):
field_map_x = arcpy.FieldMap() # create the field map object
field_map_x.addInputField(
input_fc, field_name) # add the input field name to the map
field_x_output = field_map_x.outputField # create the outputfield object
field_x_output.name = output_field_name # give the output field a name
field_map_x.outputField = field_x_output # copy named output field back
return field_map_x
def merge_feature(in_file1, in_file2, output_file):
"""
Args: dir or name
"""
# Create the required FieldMap and FieldMappings objects
fm_num_Doc = arcpy.FieldMap()
fm_suit = arcpy.FieldMap()
fms = arcpy.FieldMappings()
# Get the field names of vegetation type and suiteter for both original
# files
file1_num_Doc = "num_Doc"
file2_num_Doc = "num_Doc"
file1_suit = "suit"
file2_suit = "suit"
# Add fields to their corresponding FieldMap objects
fm_num_Doc.addInputField(in_file1, file1_num_Doc)
fm_num_Doc.addInputField(in_file2, file2_num_Doc)
fm_suit.addInputField(in_file1, file1_suit)
fm_suit.addInputField(in_file2, file2_suit)
# Set the output field properties for both FieldMap objects
num_Doc_name = fm_num_Doc.outputField
num_Doc_name.name = 'num_Doc'
fm_num_Doc.outputField = num_Doc_name
suit_name = fm_suit.outputField
suit_name.name = 'suit'
fm_suit.outputField = suit_name
# Add the FieldMap objects to the FieldMappings object
fms.addFieldMap(fm_num_Doc)
fms.addFieldMap(fm_suit)
if os.path.exists(output_file):
arcpy.Delete_management(output_file)
# Merge the two feature classes
arcpy.Merge_management([in_file1, in_file2], output_file, fms)
return arcpy.FeatureSet(output_file)
def extract(self):
"""Extract review features.
Returns:
arcetl.diff.Differ: Reference to instance.
"""
# Clear old attributes.
self._id_attr.clear()
for tag in self._dataset_tags:
feats = attributes.as_dicts(
dataset_path=self._dataset[tag]["path"],
field_names=self._keys["load"],
dataset_where_sql=self._dataset[tag]["where_sql"],
spatial_reference_item=self._dataset["init"]["spatial_reference"],
)
for feat in feats:
id_val = tuple(freeze_values(*(feat[key] for key in self._keys["id"])))
self._id_attr[tag][id_val] = feat
# Add overlay attributes.
for tag in self._dataset_tags:
view = DatasetView(
dataset_path=self._dataset[tag]["path"],
dataset_where_sql=self._dataset[tag]["where_sql"],
field_names=self._keys["id"],
)
with view:
for overlay in self._dataset["overlays"]:
field_maps = arcpy.FieldMappings()
for path, keys in [
(view.name, self._keys["id"]),
(overlay["path"], overlay["keys"]),
]:
for key in keys:
field_map = arcpy.FieldMap()
field_map.addInputField(path, key)
field_maps.addFieldMap(field_map)
output_path = unique_path()
arcpy.analysis.SpatialJoin(
target_features=view.name,
join_features=overlay["path"],
out_feature_class=output_path,
field_mapping=field_maps,
)
for feat in attributes.as_dicts(
output_path, field_names=(self._keys["id"] + overlay["keys"])
):
id_val = tuple(
freeze_values(*(feat[key] for key in self._keys["id"]))
)
if id_val in self._id_attr[tag]:
for key in overlay["keys"]:
# Use (path, field name) for attribute key.
self._id_attr[tag][id_val][
(overlay["path"], key)
] = feat[key]
arcpy.management.Delete(output_path)
return self
def shp2fc_sel_fields(in_shp, field_list, out_dir, out_temp_fc):
field_maps = arcpy.arcpy.FieldMappings()
for field in field_list:
vars()[field] = arcpy.FieldMap() #vars()
vars()[field].addInputField(in_shp, field)
field_maps.addFieldMap(vars()[field])
arcpy.FeatureClassToFeatureClass_conversion(in_shp, out_dir, out_temp_fc, "", field_maps)
def addAttributeFromPolygons(v_layer, v_field, v_joinLayer, v_joinField):
env.workspace = os.path.dirname(v_layer)
#check fields of join layer
if(checkOrMakeField(v_joinLayer,v_joinField, False,"")==0):
arcpy.AddError("Join Field Does Not Exist")
sys.exit(1)
#test if v_field exists, if not make it
for field in arcpy.ListFields(v_joinLayer):
if field.name == v_joinField:
checkOrMakeField(v_layer,v_field, True,field.type)
#add ID field for future us
#create field map
fieldMappings = arcpy.FieldMappings()
fieldMappings.removeAll()
for item in arcpy.ListFields(v_layer):
if item.type != "Geometry":
fieldmap = arcpy.FieldMap()
fieldmap.addInputField(v_layer, item.name)
if item.name == v_field:
fieldmap.addInputField(v_joinLayer,v_joinField)
field = fieldmap.outputField
field.name =item.name
fieldmap.outputField = field
fieldMappings.addFieldMap(fieldmap)
#perform spatial join
arcpy.SpatialJoin_analysis(v_layer,v_joinLayer,env.workspace + "\\SJ_Layer","JOIN_ONE_TO_ONE","KEEP_ALL",fieldMappings, "WITHIN")
#use a join to map new info over, create list of Fields to drop
dropFields = []
for field in arcpy.ListFields(v_layer):
if field.type == "OID":
jField = field.name
dropFields.append(field.name+"_1")
elif field.name == v_field:
dropFields.append("Join_Count")
dropFields.append(v_field+"_1")
else:
dropFields.append(field.name+"_1")
dropFields.append("TARGET_FID")
arcpy.JoinField_management(v_layer, jField,"SJ_Layer", jField)
arcpy.CalculateField_management(v_layer,v_field,"!"+v_field+"_1!","PYTHON")
arcpy.DeleteField_management(v_layer, dropFields)
arcpy.Delete_management("SJ_Layer")
return 1;
def multiFieldMap(sources, names, mergeRule):
map = arcpy.FieldMap()
for i in range(len(sources)):
map.addInputField(sources[i], names[i])
map.mergeRule = mergeRule
outFld = map.outputField
outFld.name = names[0]
outFld.alias = names[0]
map.outputField = outFld
return map
def getRenameFieldMap(featurePath, currentName, newName):
"""Create a field map that does a basic field rename."""
tempMap = arcpy.FieldMap()
tempMap.addInputField(featurePath, currentName)
tempName = tempMap.outputField
tempName.name = newName
tempName.aliasName = newName
tempMap.outputField = tempName
return tempMap
def SpatialJoinLargestOverlap(self, target_features, join_features, out_fc, keep_all, spatial_rel):
pp1 = self.ProgressPrinter.newProcess(inspect.stack()[0][3], 1, 1).start()
if spatial_rel == "largest_overlap":
# Calculate intersection between Target Feature and Join Features
intersect = arcpy.analysis.Intersect([target_features, join_features], "intersect", "ONLY_FID", "", "INPUT")
# Find which Join Feature has the largest overlap with each Target Feature
# Need to know the Target Features shape type, to know to read the SHAPE_AREA oR SHAPE_LENGTH property
geom = "AREA" if arcpy.Describe(target_features).shapeType.lower() == "polygon" and arcpy.Describe(join_features).shapeType.lower() == "polygon" else "LENGTH"
fields = ["FID_{0}".format(os.path.splitext(os.path.basename(target_features))[0]),
"FID_{0}".format(os.path.splitext(os.path.basename(join_features))[0]),
"SHAPE@{0}".format(geom)]
overlap_dict = {}
with arcpy.da.SearchCursor(intersect, fields) as scur:
pp2 = self.ProgressPrinter.newProcess("search for overlap", 1, 2).start()
for row in scur:
row = (row[0], row[1], round(row[2]*1000000,6))
try:
if row[2] > overlap_dict[row[0]][1]:
overlap_dict[row[0]] = [row[1], row[2]]
except:
overlap_dict[row[0]] = [row[1], row[2]]
pp2.finish()
arcpy.Delete_management("intersect")
# Copy the target features and write the largest overlap join feature ID to each record
# Set up all fields from the target features + ORIG_FID
fieldmappings = arcpy.FieldMappings()
fieldmappings.addTable(target_features)
fieldmap = arcpy.FieldMap()
fieldmap.addInputField(target_features, arcpy.Describe(target_features).OIDFieldName)
fld = fieldmap.outputField
fld.type, fld.name, fld.aliasName = "LONG", "ORIG_FID", "ORIG_FID"
fieldmap.outputField = fld
fieldmappings.addFieldMap(fieldmap)
# Perform the copy
arcpy.conversion.FeatureClassToFeatureClass(target_features, self.inventory.getWorkspace(), os.path.basename(out_fc), "", fieldmappings)
# Add a new field JOIN_FID to contain the fid of the join feature with the largest overlap
arcpy.management.AddField(out_fc, "JOIN_FID", "LONG")
# Calculate the JOIN_FID field
with arcpy.da.UpdateCursor(out_fc, ["ORIG_FID", "JOIN_FID"]) as ucur:
pp2 = self.ProgressPrinter.newProcess("update rows", 1, 2).start()
for row in ucur:
try:
row[1] = overlap_dict[row[0]][0]
ucur.updateRow(row)
except:
if not keep_all:
ucur.deleteRow()
pp2.finish()
# Join all attributes from the join features to the output
pp2 = self.ProgressPrinter.newProcess("join fields", 1, 2).start()
joinfields = [x.name for x in arcpy.ListFields(join_features) if not x.required]
arcpy.management.JoinField(out_fc, "JOIN_FID", join_features, arcpy.Describe(join_features).OIDFieldName, joinfields)
pp2.finish()
pp1.finish()
def add_multi_muni():
# Build multi muni PSAP boundaries from muni boundaries
print("Building multi muni PSAPs from muni boundaries ...")
arcpy.management.CopyFeatures(psap_schema, multi_muni_temp)
if arcpy.Exists("muni_lyr"):
arcpy.management.Delete("muni_lyr")
arcpy.management.MakeFeatureLayer(munis, "muni_lyr")
# Field Map muni name into psap schema fields
fms = arcpy.FieldMappings()
# NAME to DsplayName
fm_name = arcpy.FieldMap()
fm_name.addInputField("muni_lyr", "NAME")
output = fm_name.outputField
output.name = "DsplayName"
fm_name.outputField = output
fms.addFieldMap(fm_name)
# Build query to select multi muni
mm_list = [ item.split(',') for item in list(multi_muni_dict.values())]
mm_list = [y.strip() for x in mm_list for y in x]
print(mm_list)
mm_query = f"NAME IN ({mm_list})".replace('[', '').replace(']', '')
print(mm_query)
# Complete the append with field mapping and query to get all munis in group
arcpy.management.Append("muni_lyr", multi_muni_temp, "NO_TEST", field_mapping=fms, expression=mm_query)
# Loop through and populate fields with appropriate information and rename to multi muni psaps
update_count = 0
fields = ['DsplayName']
with arcpy.da.UpdateCursor(multi_muni_temp, fields) as update_cursor:
print("Looping through rows in FC ...")
for row in update_cursor:
for k,v in multi_muni_dict.items():
# print(f'key: {k} value: {v}')
if row[0] in v:
# print(f'Found {row[0]} in {v} ...')
row[0] = k
update_count += 1
update_cursor.updateRow(row)
print(f"Total count of multi muni updates is: {update_count}")
print("Dissolving multi muni PSAPs ...")
arcpy.management.Dissolve(multi_muni_temp, mm_diss, "DsplayName")
# Drop in multi muni psaps via erase/append
print("Adding multi muni PSAPs into working psaps layer ...")
# Erase
arcpy.analysis.Erase(county_single_muni_temp, mm_diss, all_county_muni_temp)
# Append
arcpy.management.Append(mm_diss, all_county_muni_temp, "NO_TEST")
def fieldMap(source, srcName, tgtName, mergeRule, outType=None):
map = arcpy.FieldMap()
map.addInputField(source, srcName)
map.mergeRule = mergeRule
outFld = map.outputField
outFld.name = tgtName
outFld.alias = tgtName
outFld.aliasName = tgtName
if outType is not None:
outFld.type = pyTypeToIn(outType)
map.outputField = outFld
return map
def CalFieldMappings(origial_shp, join_shp, nameField, fieldmappings, Length):
fieldmappings.addTable(origial_shp)
AddNearPoly = arcpy.FieldMap()
AddNearPoly.addInputField(join_shp, nameField)
field = AddNearPoly.outputField
field.name = "NearPoly"
field.aliasName = "NearPoly"
field.length = Length
AddNearPoly.mergeRule = "Join"
AddNearPoly.joinDelimiter = ","
AddNearPoly.outputField = field
fieldmappings.addFieldMap(AddNearPoly)
def createTileList():
try:
arcpy.management.SelectLayerByLocation(lidar, "INTERSECT", huc8,
"1000 Meters", "NEW_SELECTION",
"NOT_INVERT")
finally:
outLocation = tempfile.gettempdir()
outName = "DEM_names.txt"
fms = arcpy.FieldMappings()
demName = arcpy.FieldMap()
dirName = arcpy.FieldMap()
demName.addInputField(lidar, "demname")
dirName.addInputField(lidar, "dirname")
fms.addFieldMap(demName)
fms.addFieldMap(dirName)
dems = arcpy.conversion.TableToTable(lidar, outLocation, outName, '',
fms, '')
return dems
def assignFieldsByIntersect(sourceFC, assignFC, fieldsToAssign, outputFC,report_areas_overlap):
tempWorkspace = arcpy.env.scratchGDB
assignFields = arcpy.ListFields(dataset=assignFC)
assignFieldsNames = [f.name for f in assignFields]
sourceFields = arcpy.ListFields(dataset=sourceFC)
sourceFieldNames = [f.name for f in sourceFields]
newFields = []
fms = arcpy.FieldMappings()
for fieldToAssign in fieldsToAssign:
if fieldToAssign not in assignFieldsNames:
raise ValueError("{0} does not exist in {1}".format(fieldToAssign,assignFC))
outputField = fieldToAssign
if fieldToAssign in sourceFieldNames + newFields:
outputField = Common.uniqueFieldName(fieldToAssign, sourceFieldNames + newFields)
newFields.append(outputField)
fm = arcpy.FieldMap()
fm.addInputField(assignFC, fieldToAssign)
type_name = fm.outputField
type_name.name = outputField
fm.outputField = type_name
fms.addFieldMap(fm)
fieldmappings = arcpy.FieldMappings()
#fieldmappings.addTable(assignFC)
#fieldmappings.removeAll()
fieldmappings.addTable(sourceFC)
for fm in fms.fieldMappings:
fieldmappings.addFieldMap(fm)
if report_areas_overlap:
join_operation = "JOIN_ONE_TO_MANY"
else:
join_operation = "JOIN_ONE_TO_ONE"
outputLayer = arcpy.SpatialJoin_analysis(target_features=sourceFC,
join_features=assignFC,
out_feature_class=outputFC,
join_operation=join_operation,
join_type="KEEP_COMMON",
field_mapping=fieldmappings,
match_option="HAVE_THEIR_CENTER_IN",
search_radius=None,
distance_field_name=None)[0]
return outputLayer
def pre_processing(self):
print('Pre-processing...')
for i, line in enumerate(self.lines):
fields = arcpy.ListFields(line)
field_names = []
for field in fields:
field_names.append(field.name)
if self.weight not in field_names:
arcpy.AddField_management(line, self.weight,
'TEXT') # Add the field 'weight'
rows = arcpy.UpdateCursor(line)
for row in rows:
row.setValue(self.weight,
str(self.lines_level[i])) # Set the weight
rows.updateRow(row)
self.lines.append(self.road)
if not os.path.isfile(self.workspace_path + '\\' + 'merge_all.shp'):
arcpy.Merge_management(self.lines, 'merge_all.shp')
if not os.path.isfile(
self.workspace_path + '\\' +
'streets_polygon.shp'): # Roads: lines to polygons
arcpy.FeatureToPolygon_management('merge_all.shp',
'streets_polygon.shp')
if not os.path.exists(self.coverage_folder
): # Roads: poltgons to coverage to get topo
arcpy.FeatureclassToCoverage_conversion(
[['streets_polygon.shp', 'POLYGON']], self.coverage_folder)
if not os.path.isfile(self.workspace_path + '\\' +
'arc.shp'): # To get topo
arcpy.FeatureClassToFeatureClass_conversion(
self.coverage_folder + '\\arc', self.workspace_path, 'arc')
if not os.path.isfile(self.workspace_path + '\\' +
self.__area_path): # Coverage to polygons
arcpy.FeatureClassToFeatureClass_conversion(
self.coverage_folder + '\\polygon', self.workspace_path,
self.__area_path)
if not os.path.isfile(self.workspace_path + '\\' + self.__arc_path):
# Create field mappings
# Get weights for arc
fld_mappings = arcpy.FieldMappings()
fld_mappings.addTable('arc.shp')
fld_map = arcpy.FieldMap()
fld_map.addInputField('merge_all.shp', self.weight)
fld_mappings.addFieldMap(fld_map)
# Spatial join to get the weights
arcpy.SpatialJoin_analysis('arc.shp', 'merge_all.shp',
self.__arc_path, 'JOIN_ONE_TO_ONE',
'KEEP_ALL', fld_mappings, 'CLOSEST')
arcpy.Delete_management('arc.shp')
arcpy.Delete_management('merge_all.shp')
arcpy.Delete_management('streets_polygon.shp')
print('Pre-processing done...')
def integrated_width(fcInLines,
fcInPolygons,
fcOutLines,
strMetricName="",
boolSegmentPolygon=False,
temp_workspace="in_memory"):
fcMemLines = gis_tools.newGISDataset(temp_workspace, "lineNetwork")
arcpy.CopyFeatures_management(fcInLines, fcMemLines)
fieldLength = gis_tools.resetField(fcMemLines, "IW_Length", "DOUBLE")
arcpy.CalculateField_management(fcMemLines, fieldLength, "!Shape!.length",
"PYTHON")
fcMemPolygons = gis_tools.newGISDataset(temp_workspace, 'Polygons')
if boolSegmentPolygon:
DividePolygonBySegment.main(fcMemLines,
fcInPolygons,
fcMemPolygons,
temp_workspace,
dblPointDensity=5.0)
else:
arcpy.CopyFeatures_management(fcInPolygons, fcMemPolygons)
fieldPolygonArea = gis_tools.resetField(fcMemPolygons,
strMetricName[0:6] + "Area",
"DOUBLE")
arcpy.CalculateField_management(fcMemPolygons, fieldPolygonArea,
"!Shape!.area", "PYTHON")
f_mappings = arcpy.FieldMappings()
f_mappings.addTable(fcMemLines)
fmap_area = arcpy.FieldMap()
fmap_area.addInputField(fcMemPolygons, fieldPolygonArea)
f_mappings.addFieldMap(fmap_area)
arcpy.SpatialJoin_analysis(fcMemLines,
fcMemPolygons,
fcOutLines,
"JOIN_ONE_TO_ONE",
"KEEP_ALL",
field_mapping=f_mappings,
match_option="WITHIN")
fieldIntegratedWidth = gis_tools.resetField(fcOutLines,
"IW" + strMetricName[0:8],
"DOUBLE")
exp = "!" + fieldPolygonArea + r"! / !" + fieldLength + "!"
print exp
arcpy.CalculateField_management(fcOutLines, fieldIntegratedWidth, exp,
"PYTHON_9.3")
return fieldIntegratedWidth