2
votes
1answer
80 views

ArcGIS 10.0, Field Calculator Nested “if” statement with strings

I need to assign a value depending on other two columns "FNP" and "Teilort". I wrote this script in phyton for field calculator. It actually works (no error messages) but the results in every cell is ...
2
votes
2answers
78 views

Returning value from other field, using FieldCalculator

I am very new to Python and need what I believe is a very basic script in order for my field to represent another fields' input, if the field's value is 0. I tried to search for this, but gave up ...
0
votes
2answers
33 views

Select Layer by Attribute: SQL and variable problems

I've had a good look around the site and haven't been able able to find any 'select by attribute' questions regarding string variables and how to integrate them into an SQL statement. In my particular ...
3
votes
4answers
278 views

Having trouble with 'and' 'or' statements and negative numbers

I have set up a program that calculates the relationship between a point and the first point of a polyline. The aim of the program is to run this calculation and then copy the result to a certain ...
1
vote
1answer
42 views

How to ascertain if a cell/field contains a value in ArcGIS attribute table

I have done a bit of research on this but can't seem to find an answer. I am wondering if there is a way to identify whether a cell/field in the ArcGIS attribute table contains a value using the ...
0
votes
0answers
61 views

Why will my field calculator python function always return Null if any inputs are Null?

I've written a simple python function that outputs a list based on yes/no fields. It appends a word to a list if it has a "yes" in another column then writes the list, formatted according to the ...
3
votes
2answers
108 views

How I can reverse numbers in a string without reversing any text? [closed]

I have a string, I need to reverse just the numbers in the string without the text: String: [321 test] The result will be: [123 test]
12
votes
5answers
2k views

Python is only using one core at a time to work

I noticed recently that python is only using one core at a time to work. Is there a way, maybe special builds or commands, to make it use all resources (second core)?
1
vote
0answers
32 views

How to write in only a file .csv (or .txt) the values contained in several rasters?

I am an beginner in Python programming but I would like to write in only a file .csv (or .txt) the values contained in several rasters. For example, I built several rasters by using a loop. The ...
3
votes
1answer
40 views

Merging .dbf Tables in Python w/o merging all fields of same name

I'd like to merge several tables together using Python. They all have the same field names: "TIME", "X", "Y", and "VALUE". I would like the "VALUE" fields to remain separate when merged, so that the ...
2
votes
1answer
62 views

Basin numbering according to Pfafstetter Method?

I would like to divide my basin into subbasins and numbers according to the Pfafstetter method. Is there an easy way to implement this in Python using ArcPy? Or are there some freely available ...
2
votes
2answers
58 views

Batch Conditional Test - For Loop with a Group of Rasters

Edit: Question was answered. Please scroll to see fixed script. Thank you everyone who helped! How do I ask a “for loop” to operate on groups of three files folder (e.x. files A, B, C), then files ...
5
votes
2answers
245 views

Is there a way to calculate closest distances to a point without using Near Analysis?

I frequently get asked to calculate distances from a specific point (A drilling well in the middle of the sea for example) to a number of Environmental layers (Protected Areas, Pipelines, Other wells ...
2
votes
2answers
55 views

Arithmetic on rasters with variable names in Map Algebra/Spatial Analyst?

I'm a Python (and StackExchange) novice trying to figure out how to perform calculations on temporary rasters with variable names. My attempt at a minimum working example is below, but I would ...
3
votes
2answers
59 views

assign a number for each group in field calculator

I have several thousand features each of which has a name. The names are not unique. what I want to do with the field calculator is assign a number to each name so I can refer to a number and always ...
7
votes
2answers
276 views

Conflict between ArcPy and GDAL/OGR?

TL;DR I can't get an installation free version of GDAL/OGR to work from within ArcMap 10.0. I get an ImportError: DLL load failed on _mod = imp.load_module('_gdal', fp, pathname, description). ...
1
vote
0answers
36 views

Doesn’t cal AGSSOM program to manage AGS mapservices from python script

We are using ArcGISServer 10.0 on a windows server. Because of database management we need to stop several ArcGISServer Services. For this purpose I use the AGSSOM program, which is called from the ...
0
votes
1answer
61 views

Converting Raster datasets into layers using ArcPy/ModelBuilder?

I am new to ArcGIS and ArcPy (just started using them on Wednesday). I am using a model to create a Point Density plot from a Shape File, with the output being a Raster dataset. I want to ...
0
votes
1answer
99 views

Getting error 'exceptions.NameError' in Python script?

I'm getting <type 'exceptions.NameError'>: name 'B' is not defined when I run this script. Why is my 'B' not defined and is it a syntax error? For clarification, I am trying to get the code to ...
2
votes
2answers
184 views

How to bulk print maps using ArcGIS or QGIS?

I have a polygon layer that I would like to print images or PDFs from in bulk as there are a large number of them. Rather than having to manually scroll and print each individual'site' in the print ...
2
votes
1answer
95 views

How to find missing dependencies in a distributed ArcGIS Python toolbox?

I am developing a Python Toolbox that uses a few external libraries (ogr/gdal, matplotlib, shapely, reportlab among others) which files I have directly copied in the same folder as my toolbox .py, as ...
1
vote
1answer
72 views

Arcpy: List to point feature class

I have a list of lists that contains: [vala, valb, valc, vald, (pntx, pnty)] [vala, valb, valc, vald, (pntx, pnty)] [vala, valb, valc, vald, (pntx, pnty)] I also have a list of the field names that ...
0
votes
1answer
79 views

Cause of ArcGIS Raster Calculator Parsing error <type 'exceptions.SyntaxError'>: invalid syntax?

This is my first attempt at much code in the raster calculator of ArcMap 10.0, but I think I'm close. I have nine rasters (A-I below) and want a new raster with value = 1 where any of the rasters ...
0
votes
3answers
272 views

Calculating distance between points using ArcGIS Desktop?

I want to write Python syntax to calculate the distance from point to other points in the water network and so on for others, I have 21 points. I need distances have to follow the network That ...
1
vote
1answer
41 views

Reinitialize ArcGIS10.0 Python installation

I am developing a Python script for a Toolbox that required a few libraries which I installed manually into C:\Python26\ArcGIS10.0\ and it worked just fine. To make the distribution easier, I dived ...
4
votes
2answers
192 views

Is it a bad idea to convert a File Geodatabase table to a dictionary?

First, what am I trying to do? I am building a Python script that should be called from an ArcMap 10.0 toolbox. This scripts uses (among other inputs) data contained in huge gdb tables. It processes ...
0
votes
1answer
105 views

How to use “this” Levenshtein Python code into ArcGIS 10

I need some help with this: First of all, I wanted to "Compare strings from two fields", and asking before at gis.stackexchange, in this post someone help me with this topic, referring me to a Python ...
2
votes
1answer
304 views

How to compare string fields in the same table with ArcGIS 10

I don't know exactly if there is a tool for this or a maybe a python script could be more suitable. I want to compare string elements from a field (POI_NAME) with another string element in another ...
0
votes
3answers
182 views

Multiple Conditional Statement with in a Con Tool

Well i want to apply multiple conditional statements within a Conditional tool. My aim is to loop through a list of rasters and on the basis of a specified range assign each range with a constant 1, ...
1
vote
0answers
39 views

Programatically export labels to CAD based on another field value

The problem: I have a fairly simple procedure to export both the polyline features (architectural cad layer) and the ID's (attribute fields from polygon features that fill the rooms in another layer) ...
2
votes
1answer
104 views

Can we access the ArcMap Image Analysis tools using Python?

Esri recently added a new Image Analysis window to ArcMap - it's found under > Windows in the main toolbar: The Image Analysis window's Processing section simplifies the experience of applying ...
1
vote
1answer
72 views

Python in ArcGIS, CalculateField_management, updating with single value

I have a float field which I want to simply update all values with 1. I can easily do this within the field calculator but I have started using python today, what is the syntax to simply update a ...
0
votes
1answer
51 views

Updating Arc Toolbox paramaters with validation script

I'm simply trying to disable parameter 1 if parameter 0 if entered. I modified the following, but it does not work, do I need to return anything? def updateParameters(self): """Modify the values ...
2
votes
1answer
289 views

How to convert Python (ArcPy) script into tool or toolbox script?

I've written a simple python script that allows me to quickly create a copy of a template Mxd, pointing to different shapefiles. The user specifies the new location, a name for the new mxd, then the ...
-1
votes
1answer
46 views

define error for python script to import arcmap [closed]

i want to create a simple python script for create one file geodatabase but show me define error # Import arcpy module Import arcpy import sys import os from arcpy import env from arcpy.sa ...
0
votes
0answers
24 views

Points Missing on Import of LongLat data to SHP using ESRI script CreateFeaturesFromTextFile()

In ArcMap 10.0 I am using a 9.1-era ESRI script in Python called CreateFeaturesFromTextFile. There appears to be no ArcMap 10 update. The input text format is the strict format ESRI point,X,Y layout ...
0
votes
0answers
41 views

Suggestions on how to create an Owner Index for a Plat Book?

I've been tasked with creating a county wide plat book for publication this june. The cartography portion is fairly straightforward as I am using ESRI's Data Driven pages for ArcInfo 10 to produce the ...
1
vote
1answer
35 views

How to refer to a variable from the conditional statement in the ExtractByAttributes function in ArcGIS 10?

Trying to use the ExtractByAttributes for rasters so that I have multiple attribute values that I want to extract. This works fine: myraster = arcpy.sa.ExtractByAttributes("source_raster", "VALUE IN ...
0
votes
1answer
219 views

how can I add all feature classes of the same name to an mxd in python

I have a bunch of folders which all have (almost) identical folder structures and file geodatabases of identical structures which in this folder structure. I need to add all of the same type of ...
0
votes
1answer
86 views

name 'AddressLocator' is not defined, Python created Address Locator

When I run this tool, I get the error 'name 'locator_AddressLocator_n_' is not defined'. My guess is that this is an issue with the path where the locator is trying to save to? So, I am assuming I ...
0
votes
1answer
123 views

Create Ms-Access type queries in ArcMap [closed]

We have a dataset with a personal GDB (mdb) with several feature classes and an mxd tied to those features to create layers based on definition queries… Currently to QAQC our data we use MsAccess ...
6
votes
3answers
544 views

Count number of attributes for unique field values

Running ArcGIS 10.1, I have two feature classes in a geodatabase. One is a point FC for polling stations, the other is a polygon FC for states. The polling station FC contains over 1000 points and ...
3
votes
1answer
77 views

Any way to perform zonal statistics on column other than value or do reclass faster?

I have to perform ArcGIS zonal statistics on a raster, but the column I am interested in is not the 'value' column. Now, I can reclass the raster so that the column of interest becomes the 'value' ...
3
votes
1answer
145 views

AddJoin failing in Python ArcGIS

My AddJoin operation is failing: arcpy.CopyRows_management(lup_file,out_dir+'lup') try: # Perform copy rows on merged csv file print 'start' aa = arcpy.Raster(SEIMF) ...
-1
votes
2answers
988 views

How to compare values from a column in attribute table with values in Dictionary{}?

I am just entering to the python world, hence the level of my question. Can anyone tell me what Python function should I use to compare values stored in one column in an attribute table with values ...
0
votes
0answers
78 views

Creating a line along an existing polyline from a point

I have a large data set of points, all of which lie on a river network and have x, y co-ordinates. I want to calculate the slope of the river channel at each point from the underlying DEM by taking ...
1
vote
1answer
41 views

How can I pan an ArcGIS map from an external application?

I have a web application with geocoded addresses. I would like to be able to click on an address within that application, and have ArcMap 10 respond by panning the map to the corresponding location. ...
7
votes
3answers
397 views

How to count the number of lines connected to a point?

I have a water network which and I need to install elbows and Tees (T). When 2 lines connect to a point, I want to install an elbow, when 3 lines connect, I want to install a Tee. How do I get ...
1
vote
0answers
81 views

Python script does not work for a LGA with space [closed]

Thanks! I got my script working now with replace gp.AddMessage() instead of print when running the script in ArcMap and replace the quote with blank as well since Python would include the quotation ...
0
votes
0answers
59 views

Best way to group datasets by country/region

I 'm using ArcGIS 10.0 and have a folder with misc GIS datasets from all over the world. I wrote a script that finds all of these datasets and writes them to a .csv file, but I also want to identify ...