Tagged Questions
9
votes
2answers
5k views
Using python in ArcGIS, create a line of varying distance from an origin point
What I'm trying to do is create a line feature from a single point, using a set distance and angle. Using ArcGIS and Python (I hope). Here's the scenario:
Say I have a point at these coordinates: ...
2
votes
3answers
1k views
Create an ArcCatalog OLE DB Connection using Python
Is it possible to create an OLE DB connection (*.odc) to a database in ArcGIS 10 , but using Python instead of the ArcCatalog GUI wizard? I don't need to necessarily create a file on disk, just make ...
0
votes
0answers
66 views
UnicodeEncodeError when using arcpy.gp.TraceGeometricNetwork_management() [closed]
I am creating a python tool (run through ArcMap) which will eventually go through a feature class selected by a downstream trace and use the obtained values to do some function. I am trying to follow ...
2
votes
2answers
715 views
create relationship class with stand alone python script
I have created a relationship class in arc catalog using the same arguments I'm using below, however if I try and create it using the script below I get:
arcgisscripting.ExecuteError: ERROR ...
10
votes
3answers
3k views
How to find and merge duplicate points?
I have two point shapefiles: Red and Blue. Each point shapefile has a z value which represents a radius (i.e. represented as buffers in the example). A duplicate point is defined as a point that ...
7
votes
5answers
2k views
Large mosaic process failing - what are the options? software independent only focussed on result
I need to mosaic about 550Gb of tif imagery together and the software I have tried keeps failing. The area has been split into zones so that the smallest has approx 200 tiles.
I have used the latest ...
3
votes
4answers
894 views
Append to text file using ArcGIS and Python
I have wrote a small routine using Python for ArcGIS (9.3) that will get the count of 2 data layers, calc a percentage, and then write the text back to a text file (CSV) to create a sort of "report" ...
8
votes
3answers
747 views
How to get full path of layer selected in drop-down box for ArcGIS Python tool
I have a Python script-based tool in ArcGIS. One of the parameters for the tool is an input raster file, which I've set (using the properties of the tool within the toolbox) to be a Raster Layer. This ...
1
vote
1answer
939 views
Data Driven Pages and exporting PDF using Python
I am able to zoom into map_index shapefile rows for a group of mxd documents in layoutview and export zoomed record as a PDF document at the same time.
I tried to combine below codes to make the ...
3
votes
3answers
192 views
ArcGIS NEAR returns -1
We are running an ArcGIS 10.0 geoprocessing script written in Python that (as part of many steps above & below) runs the NEAR command.
Both the input and output datasets (shapefiles & ...
2
votes
1answer
473 views
how to add a query layer to a mxd in a python script
I want to add a query layer to an arcmap document so that whenever i have a db data update, it is reflected in my ma and I can update my service through python script. This is my script so far...
...
1
vote
2answers
781 views
Arcpy Error in adding input field to field map
hi guys i m doing a script in Arcgis i m new to this,
i have to append some field from a table to another, i did this script in python
but i have a problem when it want make the Mapping field with a ...
1
vote
0answers
666 views
arcpy spatial join input parameter problems [closed]
Using ArcGIS 10 SP4 with all extensions...
I have a parent directory (J:\...\spatialjoin) containing two sub-directories of feature classes I want to spatially join.
Directory 1 (target features) ...
5
votes
4answers
5k views
How to use Arcpy UpdateCursor to update a field?
This should be simple but I've spent days trying everything to get it to work. I need to update a field in a layer based on two other fields. I can't even get it to update based on one field. Could ...
3
votes
1answer
3k views
How to use ET GeoWizard tools or Xtools Pro in ModelBuilder or Python to automate processing?
Is it possible to use ET GeoWizard or XTools Pro tools in automation of mapping in either in ModelBuilder or Python?
6
votes
2answers
542 views
Using Python, Batch Project output won't drop in a feature dataset (ArcGIS 9.3 or 10)
When attempting to batch project in ArcGIS (using either arcpy or arcgisscripting), I cannot get my geoprocessing results to drop into the feature dataset that I specify. The results instead are ...
1
vote
3answers
1k views
How do I add a shapefile in ArcGIS via python scripting?
I am trying to automate various tasks in ArcGIS Desktop (using ArcMap generally) with Python, and I keep needing a way to add a shape file to the current map. (And then do stuff to it, but that's ...
5
votes
2answers
582 views
Using Custom Functions in a Python Toolbox
I am trying to put together a python toolbox (Arc 10.1) and would like to use a defined function in my code. The function is:
'sys' is imported at the top of the file
def listdirs(folder):
...
8
votes
3answers
357 views
Is there a way to tell the geodatabase version using Python?
I want to find out if either a file or personal geodatabase is 9.3, 10.0, 10.1, etc
Is there a way to do this using Python?
5
votes
1answer
2k 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 ...
8
votes
6answers
982 views
How to integrate SAGA Python Modules into ArcGIS Desktop?
I have been having a look at SAGA (http://www.saga-gis.org/en/index.html) and it seems to have some nice tools for geoprocessing. I was wondering if anyone out there has had any luck bringing SAGA ...
21
votes
1answer
689 views
What does the adoption of Python by NVIDIA for GPGPU mean for GIS?
Today NVIDIA announced support for the Python language on its flavor of GPGPU (CUDA).
Manifold GIS uses CUDA to enable some accelerated raster operations but it is not a programmable environment and ...
0
votes
1answer
426 views
How to create a report of all feature classes in a geodatabase?
I am not getting any response from this script and no error displayed at all
I am writing this script to help me display the feature classes in my geodatabase
Here is my script
import arcpy
...
13
votes
1answer
705 views
How can I utilize NumPy arrays to optimize big data geoprocessing?
I'm interested in learning how to utilize NumPy arrays to optimize geoprocessing. Much of my work involves "big data", where geoprocessing often takes days to accomplish certain tasks. Needless to ...
4
votes
5answers
3k views
How do I build a form within ArcMap?
I am building a file geodatabase using ArcGIS. The gdb is going to be distributed to dozens of 'stand alone' machines. End users are expected to populate the gdb with data. End users do have ArcGIS ...
28
votes
2answers
1k views
Streamlining Python Code for Big Data
I have Python code which is designed to take point shapefiles through the following workflow:
Merge points
Integrate points, such that any points within 1 m of each other
become one point
Create ...
5
votes
3answers
1k 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
2answers
1k 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, ...
7
votes
4answers
5k views
'Import arcpy' error (RuntimeError: NotInitialized) when using IDLE
ArcGIS Version: ArcGIS 10, Python 2.6.5
Machine: Windows 7 64bit (Intel)
I'm receiving the following error when importing arcpy using the the IDLE (gui and cmd prompt) and when using pythonwin.
I ...
5
votes
2answers
197 views
Is there a way to increase the search radius of nearest neighbors for the Nibble tool?
I am working with a raster map vegetation types. I have about 20 types with unique raster code values that can be sorted into three classes:
1 - vegetation types I want to expand using the nibble ...
0
votes
2answers
132 views
Python dataSource Path
I have the following code:
When I run it:
conType = arcpy.mapping.ListLayers(imxd, "Construction_pt", df)[0]
print conType.dataSource
prints... "Database Connections\Edit - ...
0
votes
1answer
247 views
how to make a join with sql server table
I have a question.
I'd like to join .shp to table by using AddJoin_management. But I'd like to make join to sqlserver table (not to *.dbf). Is it possible to do?
it should look something like this:
...
1
vote
1answer
92 views
Adding parameters to a category in a script tool
There is plenty of documentation on how to add parameters to a category in a python toolbox,
(See the bottom of ...
2
votes
2answers
324 views
Using select by location to update a field in a feature class
I am using Arc 10.1 and I am working on a script that takes a value from a field within one shape file and updates a field in another shape file based on its location. Basically I have smaller parcels ...
2
votes
2answers
356 views
Calculate Percent coverage using another raster, with dif resolution and orientation
I have a 0.5 meter raster that defines presence or absence (cells are either 1 or 0). I have another 5 meter raster, which I created. I would like to calculate a percent coverage of the underlying 0.5 ...
6
votes
2answers
203 views
Add raster paths to shapefile with python (ArcGIS)
I have a problem and maybe someone is able to help me or give me some hints how to start.
Situation:
I have a lot of raster and of every raster I have the center coordinate. Out of this coordinate I ...
3
votes
1answer
129 views
How to add Oracle database connection to AnalyzeforMSD script?
I use this script right now:
import os, arcpy
directory = r"C:\Project"
for root, dirs, files in os.walk(directory):
for myFile in files:
fileExt = os.path.splitext(myFile)[1]
if (fileExt ...
1
vote
1answer
469 views
Arc 10 Python .shp attributes - usings fields to populate other fields - if/then/else statement
Ive been looking for a solution and unable to find one so please help if able:
I'm trying to avoid manually inputting Begin and End engineering station values already inputted into a seperate field. ...
3
votes
2answers
546 views
Majority filter (minimum mapping unit) in ArcGIS with larger window size
I want to run the majority filter in ArcGIS with a window size of 4 or 5 i.e. greater than the default 3. Is it possible? Or some other command (or tool) which might help me achieve that?
thanks!
2
votes
1answer
438 views
Need help in Python script : Getting an unicode encode error
When I`m running a script (it checks to which database a mxd is connected) I get the following error:
return codecs.charmap_encode(input,errors,encoding_table)
UnicodeEncodeError: 'charmap' codec ...
2
votes
1answer
408 views
How to access all mxd files in a folder?
I'm a beginner to Python and am trying to figure out how I can access several mxds in a folder. For example, when I want to use the AnalyzeforMSD function in ArcGIS:
import arcpy
mxd = ...
3
votes
1answer
2k views
How to set the Output Extent (Environment Setting)?
I'm a bit confused as I'm trying to figure out how to set my output extent before creating Thiessen Polygons in a loop of ~100 points shapefile. (ArcMAP 10.0 - Python)
for i in range(3,51,1):
...
6
votes
1answer
316 views
Perpendicular lines at start and end of a line
I have some lines. I want to draw perpendicular lines at the start and end of the lines, on both sides of the lines.
Can somebody help me in Python? Also, what are the variable settings of the ...
11
votes
3answers
602 views
Industry-based examples of using Python in geoprocessing and arcpy
I was asked recently by some students what types of operations GIS Analyst/Developer are usually trying to automate by using Python with geoprocessing in ArcGIS and ArcPy site package. I guess it ...
2
votes
1answer
100 views
Can I choose specific SDE version to create replica geodatabase from?
I'm trying to automate the process of exporting a replica geodatabase using the geoprocessing tools and eventually a Python script.
I can't figure out how to create the replica from a specific ...
2
votes
2answers
208 views
How do I automate performing analysis (intersection) between objects within different feature classes, for a large number of objects?
I have two tables of roads - the same roads, from different sources, and am trying to compare how similar their positions are. I'm wanting to buffer each road in one of the feature classes and ...
2
votes
1answer
199 views
Difficulty converting standalone script to ArcGIS tool
As my title says, I am currently trying to make my (working) standalone script into an ArcGIS tool so I'm not the only person in my office that can use it. It essentially selects all the data within ...
1
vote
1answer
105 views
Script to buffer 2 shapefiles within each folder of a root folder
I need some help with ArcGIS python script
My folder tree is like this:
/Testing location
C1
POIS.shp
STREETS.shp
C2
etc, etc
I'm trying to make a script to run from arcgis that would ...
4
votes
1answer
130 views
How to create list from table
I have performed a spatial join on some data and now I would like to take that data and create a list. I'm trying to do this dynamically so that it can be easily repeatable via a script or model.
I ...
4
votes
2answers
766 views
arcpy.da.SearchCursor - unique value get second field value
I have a feature class and using arcpy.da.SearchCursor I'm getting unique values of a field (e.g. Name). How can I use this method to get the associated row value of a different field (diff field = ...
