Tagged Questions

A python API created by ESRI to perform geoprocessing and layer management.

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4
votes
3answers
1k views

How do I include a variable in the where clause of arcpy.Select_analysis?

I am trying to loop through a shapefile, selecting each feature in turn and copying it to a temporary shapefile to by included in a union analysis. I'm using a cursor to find the ID name for each ...
5
votes
2answers
187 views

Check validity of file geodatabase using arcpy

AS the title suggests, how can I whether a GDB file is valid using arcpy? One approach is, only checking the whether the name ends with .gdb, but that's not a robust approach. Because a normal file ...
3
votes
1answer
461 views

ArcPy Rename Loop

Does anybody have an ArcPy script which points to a directory and renames files within that directory? For example, I have approximately 1500 raster files with names along the lines of ...
3
votes
2answers
917 views

Selecting features through arcpy

I would like to achieve the following functionality through arcpy: Querying an existing baselayer on time and create a new layer Apply symbology from an existing layer and add the new layer to the ...
3
votes
3answers
694 views

Does ArcPy have a spatial search function for geometry?

My problem: Using ArcPy I want to loop over buffers and select geometry_features inside each buffer and do something (update) only the objects found within that specific buffer. The code below ...
4
votes
2answers
508 views

Python method for finding a substring within a string

I converted a KML to a feature class and no longer have access to the symbology set in the original KML. I'm trying to re-create this by creating a new field that stores identifying information ...
4
votes
1answer
189 views

How to dynamically view Python script results in ArcMap?

I want to view the output of arcpy scripts (run in Python IDLE) in ArcMap. I tried refreshing the ArcMap data frame after I run the script. This does not work. Please advice me on this.
3
votes
1answer
647 views

How to reference a specific layer in a dataframe with Arcpy

I am trying to reference a Layer named "Tim" in the dataframe "Layers" in my .mxd. It is not working. I have looked at the ArcGIS online help and all else in this forum. Can't get rid of this Runtime ...
5
votes
1answer
2k views

issues importing arcpy in Python IDLE

Hi I would want to use arcpy in my python code. I am able to import it through the ARCGIS desktop python console. But I am not able to import it into Python IDLE. I get the following error Traceback ...
5
votes
1answer
162 views

Changes in synchronized replica not shown in ArcMap or ArcCatalog without refreshing

I am synchronizing a one-way replica in ArcEditor using Python. I tried adding RefreshActiveView and RefreshCatalog to the code, but I still need to refresh the synchronized database to see the ...
0
votes
1answer
99 views

Check multiple feature classes have same spatial reference

As the title says I've several feature classes. I want to check whether they have same spatial reference using arcpy
6
votes
1answer
229 views

Using python, how do you “reload cache” an opened Attribute Table

Used python to update a shapeFile through cursors. The Shapefile is updated, but there could be an opened Attribute Table. Manually you can hit "reload cache" to update the Attribute Table and see ...
2
votes
1answer
710 views

Unable to change data source path for group layer file

I am having some difficulty changing the data source for a group layer. Below is the code that I am using. It processes a LYR file successfully that has a single data source but if LYR file has more ...
8
votes
5answers
1k views

Get a point on a polyline from end points given distance along poly line

I have start point and end point of a polyline. How can I get a point on that polyline from end points specified by the given distance. How can I get this by using arcpy provided that this script ...
12
votes
2answers
212 views

Arcpy adds erroneous interior ring when writing adjacent, multipart geometry

I've run into an odd issue when using Arcpy to write multipart geometry to a shapefile. I am using an InserCursor to create a multipart feature from a list of parts each with a list of vertex pairs. I ...
3
votes
3answers
298 views

Convert cursor output to list of geometries

I want to convert all the geometries returned by search cursor to a list. import math import arcpy from arcpy import env env.workspace = r"C:\GIS Data\GIS data_for Maeenul vai" desc = ...
1
vote
1answer
270 views

Using arcpy.mapping.ExportToTIFF() to create dataframe geotiff

Has anyone created a dataframe geotiff using arcpy.mapping.ExportToTIFF() with satisfactory results? My output has poor quality and the georeferencing is significantly off. This example is the ...
8
votes
1answer
2k views

“Field Mapping” in ArcGIS 10 - ArcPy

I've wrote a Python script that does a spatial join and some simple calculations. My problem is with setting the merge rule for one specific field, and leaving the rest of the fields as is. For ...
7
votes
4answers
2k views

Get all the points of a polyline

I have some polyline feature objects in python. Now I want to get all the points of polylines. For example, if a polyline has start point [0,0] end point [5,5]. Result: ...
2
votes
2answers
522 views

Get all polylines from a shape file (containing polylines)

I have a *.shp file which contains only polyline features. How can I iterate over all the point features. Given ESRI Polyline example only uses already defined points to make polylines. But I want to ...
7
votes
0answers
183 views

Two machines running the same arcpy based software - only one is leaking memory

Ok, so I'm running a rather large Python application based on arcpy on two separate machines - one of them is leaking memory and one is not. Both are running the same operation in the software. The ...
4
votes
1answer
1k views

How to programmatically add shapefile to data frame in Arcmap

I have a toolbox with python script which creates a shapefile from JSON txt file, but it does not show the generated shapefile in arcmap, i have to add it from the output location. What code shall I ...
0
votes
1answer
333 views

Defining projection in arc toolbox (JSON to shapefile) in python

I have a arc toolbox which converts JSON txt file to a shapefile but we have to define the projection. How can I hard code the defined projection so that user don't have to input the projection ? ...
1
vote
2answers
646 views

How can I save raster dataset using arcpy

I'm trying to save filled raster object to geo database by my specified filename. import arcpy from arcpy import env from arcpy.sa import * env.workspace = r"C:\GIS ...
2
votes
3answers
679 views

Arcpy Max Value per Group in One Field

I have a point shapefile that have two attributes that I want to extract from them. These two fields are "Group" and "Distance" I want to grab the maximum "distance" from each unique number in the ...
3
votes
1answer
455 views

How to create an offset polyline in arcpy?

I am trying to create an offset polyline using arcpy, identical to the function in ArcObjects (constructoffset). After trying to access ArcObjects in arcpy, which I found difficult for those not ...
2
votes
0answers
68 views

network related issues arising when running an arcpy script

Essentially I wrote an arcpy script that is within a toolbox that I ported over to a different machine to test out after the script worked locally. The script essentially utilizes the psycopg module ...
0
votes
1answer
313 views

Testing if shapefiles intersect from a list using intersect: ArcGIS

I am new to programming and scripting in general, so please bear with me. I have generated a list of the location of all the shapefiles for my workplace. The files are all placed in folders, no ...
1
vote
1answer
121 views

Button that allows project search and zooms to site once executed

I am trying to create a button that will execute a Python script. I have limited Python experience. What we are trying to accomplish is to recreate these steps: Query on project Site and Radius ...
1
vote
2answers
321 views

How to automate relative filepath when adding a new toolbox to the arcmap catalog?

So I'm creating an arcpy script for a custom toolbox and I want to make it so that a user can essentially utilize the script in that toolbox without having to change the source path (which I made ...
4
votes
2answers
409 views

How to check if domain already exists?

I am trying to check the existence of domains in my file geodatabase which contains 4 domains (automatically populated after I created some annotation feature classes). My code is as follows: import ...
4
votes
2answers
831 views

Check if shapefiles exists in folder

In ArcGIS modelbuilder I want to check if a shapefiles exists, if not I want to create the shapefile in that folder. I guess the calculate value tool within ArcGIS modelbuilder can be used, but I need ...
2
votes
2answers
210 views

How to truncate file geodatabase tables with python?

Everything is in the title. I need to truncate file geodatabase tables (1 or all) with python. What is the code for that? Thank you in advance!
4
votes
3answers
900 views

arcpy join field tool is not licensed

I am using ArcGIS and arcpy to process some shapefiles. When I try to use the function arcpy.JoinField_management() the program stops and Python says that the tool is not licensed. This confuses ...
3
votes
2answers
374 views

How to use Matplotlib in Python 2.6 installed by default ArcGIS 10.0 installation?

I am wondering if anyone has successfully run Matplotlib with the default installation of Python 2.6 that comes Arcgis 10.0. It does not seem to work with the python version installed by Arcgis 10.0. ...
1
vote
1answer
363 views

arcpy: creating polyline features from the following text file format

I am looking into a way of reading the following file format with python, where 0 0, 0 1, 0 2, ect... is the polyline object number and 0(1) 464736.1645 260940. 098377 are x, y coordinates of ...
1
vote
1answer
434 views

ArcGIS Python Script Tool Validation: Control Overwrite Behavior

I'm creating a script tool to read the USGS earthquake GeoRSS feeds. It works fine as a script with hardcoded values. The script also works fine as a tool for creating a new feature class for a given ...
4
votes
2answers
1k views

ArcGIS 10 Python script to search directories and subdirectories for intersects and clip them

I'm trying to develop a tool that queries our company's data stores for any data that intersects a feature. So when we acquire a new property we can run this tool and it will find all of the data we ...
4
votes
2answers
357 views

ArcGIS Spatial Join Options Missing

The ArcGIS SpatialJoin online help page has a long list of match_options when joining data spatially, including HAVE_THEIR_CENTER_IN. However running the arcpy.SpatialJoin_analysis tool in Python ...
4
votes
2answers
1k views

Arcpy Insert Cursor not inserting all rows

Good morning all, I have a script here that takes data from a cross-tabulated non-spatial dataset where monthly values are stored in a single table row for a given year and linearizes those data so ...
5
votes
2answers
406 views

Create a polyline buffer with Arcpy

I'm trying to write a python script with ArcPy that draws arcs and I've achieved something with creating a buffer and then clipping it with a bounding box so I only keep the length I need (I thought ...
6
votes
1answer
1k views

Python Script to Create Table Using Data Driven Pages

I am trying to convert some python script to display a table (based on a dbf) of features located within a specific data driven page. So far, I have the script successfully able to refresh the map to ...
2
votes
2answers
277 views

How do you use folders as input/output parameters

What i want to do is to go into a folder, find a layer file, pull it into an mxd, then export a jpeg in an output folder. Everything is great except i don't know how to set the input/output folders. ...
3
votes
1answer
414 views

How can I create an empty feature class in a file geodatabase based on the schema of an SDE feature class?

I have 150+ feature classes in SDE for which I need to create an empty feature class in a file geodatabase. For these feature classes I need to import the attributes and the name of the feature class ...
3
votes
1answer
375 views

how to turn on labels of a layer file with arcpy

I am unable to turn on the labels with the python script. I am not sure why! Please do not direct me to another post as i have read them all. This is the most recent one i've tried, with obvious ...
5
votes
3answers
647 views

Using arcpy what is the most efficient way of projecting a selection from a large data set?

I have a large data set X(x1-xn) from which I must select consecutively the attributes A(a1-an) from X.fieldsSRC or X.fieldDST and project the selections. I have a functioning arcpy script that does ...
2
votes
1answer
271 views

write multiple statistics analysis into the same output file with arcpy

How can I add multiple stats from the arcpy.Statistics_analysis to a single output file. Can I create a text file instead of a table ? Using one of the examples in help.arcgis, if I add other stat ...
3
votes
1answer
541 views

Select Layer by Location Produces Empty Output in Python

I am new to using Python scripts to execute ArcGIS tools. In my first script I am attempting to loop through many Select Layer by Location operations on overlapping feature classes. I want to create a ...
1
vote
1answer
193 views

ArcPy: Creating weekly-sum layers by summing field values from seven consecutive daily .dbf's

So I have 490 consecutive daily rainfall shapefiles/.dbf files in a single directory. Each consists of a uniform even-spaced grid of 220 points having uniform pointIDs, number of records, field names ...
9
votes
1answer
449 views

How to get the size of a file geodatabase feature class on disk?

Is there a simple way to determine the amount of hard drive space a feature class takes up? I feel like I'm missing something simple, but I don't recall a method that does so. You would think that ...

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