Cursors are used by database programmers to process individual rows returned by database system queries.

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16 views

Sorting cursor made of Network Analyst outputs?

I have solved OD Cost Matrix analysis and I'm trying to access the results using da.SearchCursor with SQL sorting. The problem is that the result is not sorted at all. lines = ...
2
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1answer
43 views

How to delete selected rows using ArcPy?

I want to delete all rows in a feature class but remain rows 1 to 5. In other hand I want to remain first five rows and delete others. I know that I have to use search cursor and update cursor but I ...
5
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2answers
1k views

How to replace arcpy.CalculateField_management with an update cursor?

I'd like to replace this expression arcpy.CalculateField_management(bufferFile, "Shape_Area", "float('!shape.area@squaremeters!')", "PYTHON") with an arcpy.da.updatecursor. The reason for this is ...
2
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1answer
61 views

Polygon found with search cursor, but not update cursor

Here's my issue. I am doing two things with arcpy: 1) I search a feature class using arcpy.da.SearchCursor() and pull out a UID field and the geometry in WKB format for all polygons in the file, ...
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1answer
327 views

Polygon Neighbors Analysis script (ArcPy 10.1) producing erroneous results?

I'm struggling with a python script that is supposed to calculate a field for a polygon feature class. The calculation is of the average of a field value (P_TOT_DEV) for each of a given polygon's ...
2
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2answers
82 views

Proper syntax for Select Feature Layer by Location

Can someone let me know how I can use a single feature from one layer as the "Select Features" when using the Make Feature Layer by Location tool with another layer as the input? In the code below ...
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1answer
36 views

List items are replaced with new reference when adding in ArcObjects?

Based on the query i am getting some features in pFeatureCursor. I am adding that features into a List(IFeature). When iam iterating the pFeatureCursor and adding the values into pFeatureList all ...
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1answer
49 views

arcpy; Select by attribute with an If, then statement

I am looking for some advice on how to construct an if, then statement based on a select by attribute SQL query or some other method (search cursor?). I am asking users to input a unique ID ...
3
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1answer
47 views

Releasing Cursors using ArcObjects?

I am working with ArcObjects, in particular the ICursor Interface. I am creating a cursor and looping through a query's result set. My problem/concern is how to close or delete or release the cursor ...
0
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1answer
50 views

Getting wrong results in Search Cursor of ArcPy/Python script? [closed]

I have two functions: First one will crated the feature layer second one will access the same created layer and prints the result. when i run my script first time it will print the wrong results. ...
0
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2answers
62 views

Attribute field based off intersecting polygon

I need to add a polygon for each bookmark (which works fine) and then attribute a field based off which Zip Codes the bookmark polygon intersects. I dont know if I am on the right track. The code ...
3
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1answer
211 views

Debugging TypeError: SearchCursor() got unexpected keyword argument in ArcPy script?

I tried to use SearchCursor(points, fields=fieldname) but I get this error: TypeError: SearchCursor() got an unexpected keyword argument 'fields' I'm not sure why this doesn't work. # Local ...
0
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1answer
36 views

Error using UpdateCursor to copy a GlobalID field

I am trying to use an Update Cursor to copy a GlobalID field into a string field. However, I keep getting an error saying "Objects in this class cannot be updated outside an edit session [Medians]". ...
6
votes
3answers
737 views

Zero filling attributes using ArcPy/Python?

I am just learning python and I need to convert a 2 digit numeric attribute in a table to a 2 digit zero-filled attribute in a script. For example, 9 needs to be 09.
2
votes
4answers
70 views

How to create new feature classes from rows in a polygon feature class

I'm trying really hard here to get an arcpy equivalent for ARCGIS' ModelBuilder's Iterate Feature Selection. I need to export the individual polygon rows in a feature class as new feature classes. ...
0
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1answer
43 views

AttributeError: __exit__ when trying to use arcpy.UpdateCursor

I'm trying to populate a field from values of an existing field in a feature class using arcpy.UpdateCursor. I'm getting this error: AttributeError: __exit__ Here's the chunk of code I'm ...
0
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1answer
63 views

UnicodeDecodeError: 'utf8' codec- arcpy

I work with arcmap 10.3 and python 2.7.8. I have more than 500 shapefiles that located in many folders and subFolders. All Sub Folders are located in one large directory. I try with arcpy to detect ...
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0answers
21 views

Spatial filter taken more time for running any other way to improve speed

I had number of buildings in data (around 600000) i want to check if any building captured less than shape area 25sqm should snap to existing building. i have used spatial filter but it is taken more ...
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1answer
37 views

Arcpy to append results of pivot table

Good Day All, So I have a script that does some processing but the main part are two things run a multiple ring buffer using arcpy.MultipleRingBuffer_analysis and four rings do some zonal ...
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1answer
55 views

Output the Search Cursor as a string

I am trying to select Zones that intersect the dataframe (polygon). If there is only one return then I want to turn it into a sting. If there is multiple I want to turn it into a string with " ," ...
1
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3answers
2k views

Error when creating insert cursor in ArcPy?

I've written several scripts that copy data from MS Access db into a new, empty ESRI Geodatabase. I've pretty much copied the code and changed it for each table -- the first two scripts have worked ...
-3
votes
1answer
103 views

Python script with ArcPy cursors won't stop looping?

I am running my script in ArcGIS 10.2 for Desktop and it doesn't stop processing. The process is overwriting itself because I have to shut down ArcMap manually. How can I stop the overwriting as its ...
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1answer
68 views

searchcursor only takes first value in field

My script ArcGIS 10.2 is using the searchcursor to read the mLanduse feature class to return the value in lField, but it is only returning the first value in lField to populate the sField in mSoils. ...
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1answer
52 views

Select the first 5 rows of a selection after reverse sorting using an attribute field in ArcGIS 10.2 with Python

I have a feature class containing 380 polygons representing sedimentary basins and another polygon feature class representing oil discoveries within said basins. My plan is to: Iterate through all ...
6
votes
3answers
2k views

Accessing attribute table within shapefile and replace values?

I would like to find a Python script that will access an attribute table within a shapefile and either update or replace records inside a field column. More specifically, I would like to use the ...
0
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1answer
37 views

Find and Replace python script to replaces values in attribute table? [duplicate]

I am working on a stand alone script in python that will allow to me to specify a shapefile and being able to find a value and replace it with a new value. Does anyone know what code will allow me to ...
0
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0answers
39 views

arcpy fails to retrieve queried data from a layer using arcpy.da.SearchCursor

I am attempting to retrieve rows of data from an attribute table using arcpy. I have used a definition query on the data in ArcMap so that only one feature is present in the attribute table. I then ...
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4answers
148 views

arcpy search cursor not working

Im running my script in ArcGIS 10.2 and the dialog window says completed, but the empty fields in the 'SoilsType' row of the 'mSoils' Feature Class aren't getting populated with the values from the ...
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1answer
80 views

Spatially Joining Many Shapefiles. Use Spatial Join or UpdateCursor?

I have a large number of tree records in 100s of point shapefiles. Each shapefile contains a number of trees that fall within 10-50 parcels. The parcel layer contains ~60,000 shapes. For each point ...
0
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3answers
51 views

Creating layers for each attribute value via Arcpy script

I'm having some trouble starting this script. Not sure how to start, as I have to create/output layers for each attribute value from a certain column named that has integers. They are all unique ...
0
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1answer
50 views

Extracting from attribute tables by arcpy

I'm having some trouble connecting ideas on how to solve a problem. What I have is a shapefile from which I have to extract from one field, which contains 3 types of attributes (BS, RS, BRN). For each ...
1
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1answer
43 views

Exporting shapefile to csv with cursor

I'm trying to export a shapefile to a csv file using a cursor. I found this quesion asked and answered here: Exporting table to XYZ ASCII file via ArcPy? However I only want to export several ...
2
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2answers
53 views

Controlling default value of arcpy.AddField_management

I have a large collection of shapefiles that use text fields to hold numerical values. I have created new fields, and populated them with the numerical equivalent of the text field. When adding the ...
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1answer
13 views

Using Update_Cursor to fill new field

The goal is to crate a new field call "Full_Address" in which the "ADDRESS", "CITY","ST_ABREV" all appear together. I can get use row.getValue for 1 field but not more. import arcpy in_table = "C://" ...
0
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1answer
38 views

Python error in search cursor function

I need to access the dbf file to extract variable list (i.e. "CODE"). Basically I am calling dbf file to allMamrows variable and then I am appending using for loop. On running the script I am getting ...
3
votes
1answer
2k views

insert cursor “Row contains a bad value”

I'm having a problem copying data from a shapefile to a feature class using an insert cursor. Here is the part that is causing trouble: newRows = arcpy.InsertCursor(Target) sourceRows = ...
0
votes
1answer
79 views

Updating field in feature class using ArcPy cursor?

I want to update a field in my feature class. I tried to use a da.SearchCursor (code below) but was quickly reminded that tuples are immutable... I ran the code but it failed with a TypeError: 'tuple' ...
0
votes
1answer
30 views

update cursor datetime if start date greater end date

I have 2 date fields in my feature class. If the start date is greater than the end date, I want to add 24 hours to the end date. I am getting a SetValue error. cursor = arcpy.UpdateCursor("PolyFc") ...
4
votes
2answers
720 views

Getting XY coordinates and field values for each row in ArcPy SearchCursor?

I am trying to enumerate each row of a points shape file and get a certain field's value (elevation) and the xy coordinates. But I see I can only use: arcpy.SearchCursor to get the field; OR ...
0
votes
1answer
79 views

Check field type and execute depending on it using ArcPy?

I had a script that converted data from a clients site to a usable GIS format until they changed the output. I've tried two different directions with no luck. Due to how an earlier part of the ...
0
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0answers
22 views

Multiple Together Several Fields, then Use Update Cursor

Is it possible to preform multiplication on several fields of an attribute table together and then use an update cursor to assign the resulting value to a specific field?
1
vote
1answer
87 views

Using Update Cursor?

I am currently trying to get my update cursor to populate every row in each attribute table for 175 different feature class fields. I have written the script and it is populating the first row but all ...
0
votes
2answers
82 views

Update Multiple Columns within One Update Cursor

Are you able to update several fields within an attribute table at the same item within one Update Cursor command. Code Example: with arcpy.da.UpdateCursor (fc, fields) as cursor: for row in ...
0
votes
3answers
85 views

SearchCursor Index Out of Range

I'm using ArcGIS 10.2 and trying to obtain values in a field using SearchCursor. Would someone help me with this? import arcpy oc = r"C:\Users\Scratch\oc.shp" catchments = ...
4
votes
2answers
1k views

set values in feature class attribute table to null

I've created a point-data featureclass (fc) containing data from a simple .txt file using Arcpy as follows: arcpy.CreateFeatureclass_management(out_path= outPath, out_name= 'fcTest', geometry_type= ...
2
votes
3answers
163 views

How to update the Z value using an UpdateCursor?

I have created the following script to mimic the ArcGIS 3D Analyst tool, FeatureTo3DByAttribute, which creates a 3D copy of a 2D feature class and sets the Z to a specified attribute. import arcpy, ...
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0answers
43 views

esri ArcObjects slow performance accessing features [duplicate]

I have to create my own control like Attributes Table using C#. My version of attributes table is very slow, for ex. for 300.000 rows in table and 140 fields it takes about 1 minute! esri Cursors are ...
3
votes
2answers
420 views

How to calculate a value based on another field under arcpy.da.UpdateCursor and cursor.updateRow?

I am trying to do a calculations under arcpy.da.UpdateCursor. I want to calculate the values for the records that have FIPS=06037. I want to take the values from "kg" column and populate the new value ...
2
votes
1answer
42 views

Is it possible that ArcObjectsed ITable.Search hits default table version but cursor iterates over the edited current version of the table?

I'm very new to ArcObjects and working on an ArcMap addin. I'm having some trouble with understanding the results I'm receiving from my queryFilter. It seems doing a ITable.Search(queryFilter, true) ...
0
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1answer
107 views

Inserting row into table and then updating it in sum of each column using ArcPy?

My problem is the following: I have a table with an unknown number of columns (n) Use arcpy.ListFields create a list of columns and generates Field name list Then, using arcpy.da.InsertCursor create ...