3
votes
4answers
271 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 ...
2
votes
2answers
26 views

Preventing ArcPy from changing MXD extent?

I want to process mxd datasources without changing the extent. When I open the MXD in ArcMap and click full extent, I get 1:214,890, after I save and re-open in ArcMap I get what I saved with. ...
1
vote
1answer
36 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 ...
1
vote
1answer
39 views

Create a fishnet in a 'for' loop with Arcpy

When running the following script, I get the error saying that I need a value for “origin_coord” and for “y_axis_coord”. So is it not enough to define a template dataset? But how can I fill the ...
1
vote
0answers
31 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 ...
1
vote
1answer
31 views

Syntax error: keyword can't be an expression with the function “Con”?

From How can I reclassify an integer raster to a float raster?, I would like to reclassify an integer raster "cpraster3.tif" to a float raster. For example, I would like to reclassify "Value" = 1 into ...
2
votes
1answer
38 views

Cannot read CSV-file from ArcMap

when trying to import a CSV from my hardtrive to my map-document using "add Data"-dialog I get the error "Selected element could not be added to map. Generic error" (or something similar, I am using ...
2
votes
1answer
50 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 ...
-1
votes
1answer
31 views

Is there a method in ArcObjects that is equivalent to ArcPy's: SelectLayerByLocation_management?

I have 2 IFeatureClass and I want to do an INTERSECT between the two. What is the best way to do this from ArcObjects?
0
votes
1answer
27 views

How to resolve ERROR 010271: Raster does not have an attribute table?

From my code which builds least-cost paths between several polygons by using the functions "CostDistance" and "CostPath" of ArcGIS , I obtain this error message: ExecuteError: ERROR 010271: Raster ...
2
votes
2answers
53 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 ...
1
vote
1answer
40 views

How to get around “name 'row' is not defined” error when row in question doesn't exist?

I am getting a "name 'row' is not defined" error when I run a particular piece of code (see below). This only happens when my input layer has one entry instead of two. So when the attribute query is ...
4
votes
2answers
180 views

What is the most efficient way to search a geodatabase for NULL-like records?

The problem: I have a geodatabase with several datasets and many more feature classes within. The fields within the feature classes have been populated through joins with shapefiles and manual edits. ...
1
vote
2answers
65 views

How to use the 'if' function to set field value based on various other field values

I am trying to populate a field with a value from another field in the same row, the condition I have set for this to take place is if a third field is equal to 0. In order to achieve this I have ...
1
vote
2answers
73 views

Error 000732 - input raster does not exist when implementing script tool arcpy

I am trying to implement a script tool in ArcGIS 10 that completes a few equations with raster datasets. I seem to be getting the same error no matter what I try: <type ...
7
votes
2answers
247 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). ...
0
votes
1answer
44 views

Setting Layer Properties Using ArcPy

I am writing an ArcPy script that creates a Point Density Raster file, and then changes the following properties in the resulting layer: Symbology Classified Classes = 10 Classification Method = ...
0
votes
1answer
53 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 ...
2
votes
2answers
70 views

Call field from zip() into Field Calculator expression ArcGIS

I've been trying to find a way to call in field names from a zip(). Basically I have 12 fields called "Flw_days1", "Flw_days2" etc and corresponding "Depth" fields that need to be calculated using the ...
1
vote
1answer
69 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 ...
1
vote
2answers
96 views

Feature class to Feature class not working

I am trying to use the Featureclass to Featureclass conversion tool to make a copy of an existing layer (in a geodatabase). My primary motive is to copy over only a few (2 out of 18) fields to the new ...
0
votes
1answer
41 views

How to resolve 000210 problem, when I use Scratch Workspace

I have some problem. Now I'm trying to make Python script to resolve some problem. I need too place all out features in Scratch Workspace (Later this script will be used in web GIS and intermediate ...
0
votes
0answers
53 views

Arcpy raster calculation producing random no data cell in output

I've been trying to get the raster calculation below to work using python: import arcpy from arcpy import env import os from arcpy.sa import * arcpy.CheckOutExtension("spatial") KSat_mm = ...
0
votes
1answer
73 views

DeleteField_management gives ERROR 000308 Invalid field type?

I am attempting to delete a list of fields in a feature layer but am getting an error: Execute error: Failed to execute. Parameters are not valid. ERROR 000308 Invalid Field type Here is a code ...
1
vote
2answers
49 views

Help needed editing existing coordinate information with python

I'm hoping someone can help me with this. I would like to find a way to edit shapefile (polyline) coordinate data using python. Basically, I want to edit all the z-coordinates in my shapefile so that ...
4
votes
2answers
186 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
3answers
163 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
2answers
47 views

ApplySymbologyFromLayer [closed]

I am a new user of Python on ArcGis10 i am trying to apply symbology settings to multiple files but to no success. I have tried my own ways copied syntaxes from various places still getting error. The ...
-1
votes
1answer
47 views

Esri ArcGIS 10 - using ArcPy to select buffer line by length

I created a buffer, then converted polygon to line (around a city block). I want to select the internal line. I'm thinking since there is no uniform way that ArcGIS labels the interior or exterior ...
2
votes
1answer
82 views

Does SearchCursor reset work in ArcGIS 10.0?

In a script I have designed a function that is used multiple times on different search cursors to search through a whole table. Function variables: p - a list of points: actually a list of ...
0
votes
2answers
97 views

How to return the first row of feature class as a list in ArcPy?

I need to return the first record of a feature class as a list. Is this possible? I can't seem to figure it out using row.getValue() as it does not allow me to put a wildcard in there.
0
votes
1answer
108 views

arcpy.ListDatasets() returns emtpy list

I'm having trouble getting the ListDatasets (or any of the list functions) to return anything but an empty list when pointed at our SDE geodatabase, but the same code works for a file geodatabase. I ...
-1
votes
1answer
48 views

arcpy calculate zero number instead of negative number

I want to develop a model using python.When i want to calulate negative numbers using the model,my script get zero number. Whats wrong in my script ? How can i solve the problem ? Thanks for advance ...
2
votes
1answer
93 views

Find maximum and minimum value in a list of raster

I trying to write a standardisation script that standardises each raster dataset in a list of rasters by the highest and lowest values found in the list of rasters. The standardisation code is as ...
-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 ...
1
vote
2answers
77 views

arcpy 10.0 iterate through shapefile1 clip shapefile2 to shapefile1's polygons

I know that this question has been answered several times before, but for some reason I cant get this script to run...So I was hoping someone could point out where Im going wrong. I have 2 ...
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 ...
2
votes
1answer
353 views

Using ArcPy update cursor to replace <Null> value?

I have been combing the help associated with (None) values in arc, and have not been able to solve the following problem: I have a a field with mixed Null and integer values: 0 100 I would like ...
1
vote
1answer
142 views

Using unicode characters (arabic) in Select By Attribute of ArcGIS for Desktop?

I'm new to Python scripting with ArcGIS for Desktop and I have unicode characters (arabic) in my attribute table. I want to use these characters in my script but when I try to do that the script ...
0
votes
1answer
74 views

AddLayer method failing when script in ArcToolbox is run from ArcCatalog

I need a 2nd set of eyes to do a sanity check, as I am not been able to figure out why a script that runs fine in pywin, does not run properly as a tool in a toolbox. Below is the script that runs in ...
0
votes
1answer
196 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
83 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 ...
3
votes
1answer
138 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
882 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 ...
2
votes
3answers
254 views

How to create a geodatabase feature class using a geodatabase table schema with ArcPy?

Is there a way in ArcPy to create an empty polygon geodatabase feature class that will acquire the schema of a geodatabase table? I know that it's possible in ArcCatalog (New -> Feature Class and ...
3
votes
1answer
214 views

Arcpy - What's the best way to check whether feature class has selection? [duplicate]

In a sentence, how do you test in Arcpy whether a feature class has any selected records or not? More info below to explain: I am doing a batch process in which a sampling layer (10km grids) is used ...
1
vote
2answers
753 views

Import Arcpy using PythonWin

I tried to install pythonwin26-212 from ArcGIS10.0 Desktop CD. pythonwin26-212 stops working as soon as I press "Enter" in the interactive window. (ps. I downloaded pythonwin26-212 from sourceforge ...
1
vote
0answers
80 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
1answer
74 views

How to reproject Network Dataset from GCS_WGS_1984 to Web Mercator?

I need to know how to change the coordinate system of my feature dataset with its network dataset from GCS_WGS_1984 to Web Mercator. Once I know how to do this, I would like to make a tool in Python ...
9
votes
4answers
204 views

How to determine if point is surrounded using raster processing?

I am attempting to improve a currently extremely cumbersome vector/python process for a natural hazard model. At the moment we have a lengthy script which generates distance/bearing lines from a given ...