Tagged Questions

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

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6
votes
1answer
184 views

Why does tool take longer to run when in Python script?

I have written a python script that does some euclidean allocation. For that I use arcpy.gp.EucAllocation_sa() method. Now, my python script takes 30-40% extra time than spatial analyst euclidean ...
3
votes
3answers
678 views

How to create lines from points pair coordinates with arcpy?

I've got some points pair coordinates (start and end points) which I have to transform into lines. Until now, I used an append of both the coordinates in a pippo.Point(), a pippo.CalculateGeometry() ...
2
votes
1answer
282 views

How can I use a variable to specify which field to update with arcpy.UpdateCursor?

I am writing a script that cycles through several different point shapefiles, finds how many lie within a given area and the writes the outcome to a table in an Access database. I've used an search ...
31
votes
9answers
2k views

Alternatives to using Arcpy

I seem to use ESRI's Arcpy site package for virtually all of my python geoprocessing. To ESRI's credit, these are an incredible suite of tools that can help accomplish a great deal. However, I would ...
1
vote
2answers
77 views

Automating attribute completion of new polygons

Good Afternoon I am currently outlining property boundaries and then copying and pasting in the necessary attributes on a daily basis. I would like to speed up this process and remove the chance of ...
0
votes
0answers
365 views

Why am I getting an ERROR 000728: Field *fieldname* does not exist within table even though field exists?

I do some script for a shapefile's table. And this script works for 2 fields and do not for other ones, because of: ERROR 000728: Field FID_158_01 does not exist within table But this field is ...
2
votes
2answers
340 views

Delete all fields from feature class with arcpy

I want to delete all of the fields from a feature class in a simple tricky way, I don't want to loop over the fields because this method is very slow in arcpy. I'm using a polygon feature class, I ...
1
vote
0answers
180 views

ArcGIS/arcpy: Geometry object comparison methods not working. Do they take z values into account?

I have an arcpy script that makes calculations based on an input PolygonZ feature class. What I need to do in several places in the script is test whether a point falls within a polygon in 2D. In ...
1
vote
1answer
163 views

How to add new data frame(s) to map using ArcPy?

I want to add a 2nd data frame to an existing "*.mxd" file. Right now, i see option to add layers and edit properties of "CURRENT" data frame but could not figure out how to add a new one and export ...
12
votes
3answers
365 views

How are people using Python data structures and classes in Arcpy?

This question may expose my ignorance on programming but I'm curious about how people are using different python data structures within Arcpy. This page lists the data structures in Python. I ...
3
votes
1answer
262 views

How to pan to a specific feature using arcpy?

I am attempting to use python and arcpy to automate the creation of some standardized maps I need to export for feature classes from various projects. I have a set of points and I need to export a ...
1
vote
1answer
415 views

how to get ALL FIELD NAMES from table? (using arcpy.ListFields)

I have a table: , Script at ModelBuilder's "calculate values": Expression: a("%path%") Code BLOCK: def a(path): fields = arcpy.ListFields(path,"FID_*") for field in fields: return ...
3
votes
1answer
701 views

How to clip/export multiple selected vector layers in a map to extent of another raster/vector layer in ArcGIS?

Is there a way to clip/export selected vector layers (more than one) in a map to the extent of another raster/vector layer at a time?? in Arcgis or any other software. I am using Arcgis10. I am ...
2
votes
2answers
541 views

How to clip multiple raster datasets with county polygons?

The example below shows three raster (i.e. in black) and a single county polygon feature class. How can I clip/extract by mask the rasters by their corresponding county polygons (i.e. Edwards, Clark, ...
0
votes
1answer
414 views

Why do i get an input error no module named arcpy when i try and import it into pythonwin?

Here is the error i get when i use the import arcpy command in pythonwin: Traceback (most recent call last): File "", line 1, in ImportError: No module named arcpy Can any one tell me how to fix ...
4
votes
1answer
194 views

focal statistics with variable radius

is there an easy way to do focal statistics on a raster, with a variable radius for the neighbourhood to be searched? As in: that search radius would be stored in another raster? i tried something ...
5
votes
2answers
148 views

Using newly created features in the next part of a python script

Good Afternoon I am trying to write a python script which buffers a large number of features from a geodatabase (but not all) and then dissolves the newly created buffer shapefiles together. ...
0
votes
0answers
124 views

How to iterate throught fields names in a table and change row values?

I got table like that one (Example). I need to change 0 to 1 and -1 to 0 in each field except first and second. The problem is that every time i have different number of fields and field name is ...
1
vote
1answer
86 views

ResultObject: Error in getting output

I am getting "ResultObject: Error in getting output" message when I run the following code. I know it has something to do with "os.path.join" but can't figure out what. Thanks. Sam import arcpy ...
2
votes
3answers
233 views

Is there a way in arcpy to convert map units from feet to decimal degrees?

This is my problem: I have an arcpy script that finds the XMax, XMin, YMax, and YMin of a polygon. It shows the results in feet, but I want them to be in decimal degrees. In ArcMap I can change the ...
5
votes
1answer
157 views

Adding kernel density output to map with ArcPy

I am trying to emulate the behavior of the Kernel Density tool from the ArcMap 10 GUI in a script; in other words, I want to calculate the density of a dataset, and add the visual result to a map. If ...
2
votes
1answer
167 views

Python script for Data Driven Pages to run a series of DDP at once?

I have a several different polygon shapefiles that I am using to create individual maps for each polygon within the shapefile. The layout is the same for each map, the only thing that changes is the ...
10
votes
2answers
165 views

Count raster value in a bounding box (spatial extent)

I have simple question: given a bounding box, how can I count the number of specific values (say, I am interested in the number of value == 1 ) in a raster in 1) arcpy, or 2) raster package in R?
2
votes
1answer
142 views

Python add-in won't buffer from output layer

I have a simple add-in script for Arcmap 10.1 to create a toolbar, select a layer from a drop down list of the current layers in the project, buffer that layer four-miles, then use the resulting ...
3
votes
1answer
322 views

How to write a python script to give multiple buffers of different sizes in ArcGIS?

I want to write a loop that will cause the output to be multiple buffer shapefiles. For example I want a circle buffer of 50ft, 100ft, 150ft..... Can anyone help? I'm new to this and am trying to ...
1
vote
1answer
55 views

Change printer for a specific map document from Arcpy

Is it possible to change the printer for a particular map document from ArcPy? The mxd is saved with the default printer settings, and I know with the PrintMap() function one can specify the printer ...
3
votes
2answers
257 views

Trouble finding YMin and YMax of a shapefile in ArcMap 10 and Arcpy

I want a python script that tells me the Xmin, Xmax, Ymin, and Ymax of a polygon. (I guess this is finding the extent of a polygon?) My current script gives me the correct the Xmin and Xmax, but it ...
1
vote
1answer
275 views

Move TEXT_ELEMENT using arcpy.mapping and data driven pages

I'm customizing an automated mapping solution using arcpy.mapping and data driven pages. Using a looping statement, I'm hardcoding the position for the mapping elements (legend, north arrow, inset ...
1
vote
0answers
140 views

using copy parallel in arcpy

I'd like to use copy parallel tool with Arcpy . i tried to access copy parallel with GUID in Arcpy but i couldn't use the property and methods of this tool . i used comtype to import Arcobjects to ...
1
vote
1answer
290 views

How to calculate field as cursor name?

First time dealing with cursor. I have lines intersecting polygons, I want to get a table with all attributes of the lines, add a field and calculate the field as the name of the polygon. I was able ...
1
vote
2answers
238 views

Python scripting for ArcPad Checkin

I can use ArcGIS Desktop model builder to leverage the ArcPad Check In Tool. When I run the model it executes successfully. When I export the model as python I get this code: import arcpy # Local ...
1
vote
1answer
101 views

Substitute for SpatialJoin tool?

I have to write a script in Arcgis which I would like to use the SpatialJoin tool (arcpy) but I do not have the appropriate extension. It may be a tool (or example of scripts) for doing the same ...
2
votes
1answer
373 views

Convert MapInfo - MapBasic Script into Python

I have a mapbasic script that divides an irregular polygon into smaller polygons of 1 hectare each. Would anyone help me to convert the following into an arcpy python script. ' This program ...
8
votes
2answers
286 views

How to bypass errors in arcpy for/while loop?

I have a handy script tool that loops through a workspace and renames and copies shapefiles to a feature dataset. However, if there is a corrupted shapefile somewhere in the workspace the script ...
0
votes
1answer
114 views

How to populate Unique ID field after sorting?

I am trying to create an new unique id field in a feature class. I already have one field called "SITE_ID_FD", but it is historical. The format of the unique value in that field isn't what our current ...
0
votes
1answer
293 views

ArcGIS/arcpy: Can a variable be set to reference an in_memory workspace object?

This is an offshoot question related to a question I posted earlier. I have the following arcpy code that inputs a Python list of polygon geometry objects to the Union_analysis tool, which then ...
0
votes
1answer
228 views

Looping Dataframe in Python doesn't Return Expected Results

I'm creating a python addin script to be used on some mxd's I have created as templates. Each map contains 2 dataframes. I need to loop through each dataframe and do some processing on each. I set my ...
0
votes
1answer
392 views

ArcGIS/arcpy: Input of in-memory geometry object to Dissolve tool in arcpy script throws Error 000732, input doesn't exist or is not supported

In an arcpy script, I run a Union on a list of geometry objects. The output is set to an empty geometry object. The Union runs fine. What I am trying to do is then feed that output into the ...
1
vote
3answers
109 views

Why do I get a no module error when I try to batch process in Arc10?

I was trying to batch reproject a set of shapefiles and I kept getting the error No OS Module As the set was relatively small I just did it individually, however I want to be able to batch process in ...
3
votes
1answer
813 views

How do I use python to batch process the reprojection of a group of shapefiles?

My client would like his shapefiles reprojected and I would like to get a script that can batch process all the files located in the same folder. I am new to Python and ArcPy but am very interested. ...
12
votes
1answer
586 views

How do you write a Python script for repairing data sources in ArcGIS 10

So, I have about 50 mxd's with all broken layers that I have been going through and manually resetting. The data was moved from another computer and the folder structure was changed so it isn't just ...
2
votes
1answer
150 views

How do I write a script to list those layers with broken data sources?

In my SHP to GDB toolbox, I create a list of layers in MXD, then I check for those not broken I move them. Despite using ListBrokenDataSources I have errors like this: Runtime error : [Error 3] ...
1
vote
1answer
298 views

Modify dataframe extent using data driven pages and arcpy.mapping

I'm customizing an automated mapping method using arcpy.mapping and data driven pages. Essentially I have a script that loops through each page, and modifies the location of the inset map, legend, ...
3
votes
1answer
118 views

ArcObjects/VBA to python Network edge to junction lookup IEdgeFeature equivalent in arcpy

In an effort to migrate a script that transfers attributes from a geometric network to a feature class (on a given network edge segment, what are the up and downstream junctions?) I would like to ...
8
votes
5answers
473 views

How to split points by polygon?

I am looking for a way to split points by a county polygon feature class. The attached image shows two feature classes: one composed of points and the other a county polygon feature class. The split ...
0
votes
1answer
170 views

Parse attribute table value to export filename using data driven pages and arcpy.mapping

I'm trying to customize a data driven page looping statement workflow and want to set a better filename to the final export. Currently the file name uses the page index (pgIndex), but I would like it ...
4
votes
2answers
860 views

Create temporary files as intermediate output to be used as input in concatenation

Q_PART_I I need to merge many (MANY) tables in one unique output table by means of the arcpy.Merge_management. Anyway, I'd like to avoid the creation of tons of intermediate files as my script ...
1
vote
2answers
152 views

Cannot get arcpy.MosiacToNewRaster to work with list

Below I have a snippet of a much larger code that I cannot get to work and I am not sure why. It seems that I always have trouble using arcpy functions with rasters. Can anyone help me get this code ...
3
votes
1answer
64 views

> - operator and “Shape_Area” field in a geodatabase

this might be a pure python problem or a problem with arcpy. please help me out: min_area = float(GKPROZ_functions.min_of_field(out_name,"Shape_Area")) print area_max if min_area > ...
2
votes
2answers
531 views

Help with ListFields and CalculateField_management syntax

I need some assistance with the syntax for a CalculateField_management calculation as I have still yet to master all the python syntax rules. What I am trying to do is find the max value in a ...

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