Tagged Questions

Geoprocessing is a GIS operation used to manipulate GIS data.

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3
votes
1answer
36 views

ArcObjects Geoprocessing Failures

I am working on launching the GenerateNearTable using the ArcObjects Assembly method. I have the advanced license (10.1), so the tool is available. The code to launch geoprocessing is: Private ...
2
votes
0answers
45 views

Problem when executing Dissolve method in ArcEngine

I'm always having a problem in GP.execute() when trying to execute this method. Here is my code: Friend Function DissolveFeatures(ByVal pInFLayer As ESRI.ArcGIS.Carto.IFeatureLayer, ByVal ...
1
vote
1answer
105 views

Resample, ArcGIS: How do I avoid resample taking into acount NoData values?

I am trying to Resample a raster dataset to match the resolution of another dataset. I have fine resolution data on small islands (surrounded by NoData in the sea). When I re-sample the data to a ...
0
votes
1answer
28 views

Geoprocessing tool not executing when Map's SpatalReference is Web Mercartor

I am facing a strange issue when trying to execute GP service when my map's spatial-reference is Web Mercator. I appreciate all help. I have a JavaScript API application. Initially I only had my map ...
0
votes
1answer
38 views

Can ArcPy collapse layer in current data frame?

Online arcgis resource help provides a list of layer properties which can be used as needed. I am not able to find a way to collapse a layer using arcpy in it. Please suggest if there is a way to ...
5
votes
3answers
923 views

How to create spider diagrams (hub lines) in PostGIS?

I'm rather new to PostGIS but I have done a lot of reading. One thing that I have been searching for is a function that allows users to create a "spider diagram" (also called "desire lines" or "hub ...
4
votes
5answers
8k views

For every point, distance to nearest polygon of type X?

In ArcGIS how might one calculate as an attribute value the distance to the nearest polygon of type X? Say we have a point layer of wildlife observations and we want to know how far each of them is ...
7
votes
1answer
152 views

Determine minimum number of polygons from shapefile to cover an area of interest

I have a large number shapefiles representing areas of interest for an analysis that will be conducted using various sources of satellite imagery (IKONOS, RapidEye, etc.). Unfortunately, the imagery ...
0
votes
0answers
52 views

Congressional Redistricting

I have a project coming up where I need to create new congressional district looking at only total population data. I am planning on using the census tract level of data, but I am having some ...
5
votes
2answers
104 views

Sort a feature table by geographic location

Here's in interesting challenge: I need to embed a table in a map layout so that the records in the table are sorted according to their geographic position on the ground. For example, in a ...
1
vote
0answers
107 views

How to get SplineWithBarriers to work in C#

I have been having fits trying to get SplineWithBarriers to work but to no avail. My environment: Windows 7 64 bit Visual Studio 2010 Team Edition ArcMap Release Version 10.0 Product Version: ...
1
vote
1answer
58 views

Add Attribute and merge .shp's from multiple folders/directories

I would like to run a process to: 1) find all shapefiles in muliple folders/directories (i.e., the directory for each differen folder is "G:\Projects\"variable project #"\GIS\Shapefiles) 2) Add a ...
0
votes
1answer
23 views

ArcGIS 9.3 geoprocessing service output consideration

I'm developing geoprocessing service which do few processes with geographic data. I would like to get somehow geometry of those data and use it in my web aplication (JS ArcGIS API). Now I'm wondering ...
0
votes
1answer
34 views

Error code 500: Geoprocessing Task Failed

We are calling custom Geoprocessing Tool from sliverlight application. This GP Tool throws an below error. When I take a request from fiddler and copy in IE and execute also fails with below message. ...
7
votes
2answers
178 views

How to increase maximum memory usage cap for running Arc 10.1?

Not sure if this is strictly GIS related or perhaps belongs on StackOverflow...it is regarding ESRI ArcGIS 10.1, so I'm sticking it here. I'm looking for options to increase processing capacity, and ...
2
votes
2answers
55 views

What tool would you use to “clip” a vector line file to a vector polygon file?

I am trying to select the use of a large vector line file within only the parameter of a vector polygon file to do spatial analysis. It would be the same thing as using the extract> clip tool under ...
3
votes
1answer
73 views

Getting “Failed to open tool” message when trying to run geoprocessing tool from C# code

I've been experimenting with the Military Aspects of Terrain Template, which has a toolbox associated with it. I've been using the following WPF Runtime code, which should open a tool in the ...
6
votes
3answers
191 views

Why is it important to use feature layers in ModelBuilder?

I am trying to understand creation of a geoprocess with ModelBuilder, but I don't know why it's important to use feature layers instead of feature classes when creating a geoprocess with ModelBuilder. ...
0
votes
1answer
52 views

How to buffer increasing/decreasing population zones?

I will find out the difference in population between year 2000 and 2013. I have a feature class file with the population in year 2000 and 2013 that are connected to the municipal number and that is a ...
2
votes
1answer
51 views

Clipping buffers to census tracts

I have donut buffers generated to protect anonymity of household locations. They need to be clipped so that they are only inside the census tract that the original point was in. The code takes about 8 ...
2
votes
1answer
72 views

How to efficiently check for feature overlaps with Arcpy?

In an effort to reduce processing time, I am looking for ways to pre-process data within my script. I have ~18,000 featureclasses with ~500 features each (all simple circle polygons) from which I want ...
1
vote
2answers
398 views

ArcGIS Server geoprocessing service examples for shapefile data export

I have a web application client built using ArcGIS Server Manager which is currently showing a single map composed by three data layers. The map data are provided as a map service by my ArcGIS Server ...
1
vote
1answer
65 views

GDAL bindings problem with ArcMap 10.1 Python tool

I'm really getting mad with this. ArcGIS sometimes can be so just...irritating! Forgive me if this question is by any means duplicating this one or similar ones, but I really can't find my way out of ...
0
votes
1answer
63 views

Merge attribute of points into a polygon : Arcmap 10

I have points layer which the attribute looks like this: FID Shape ID Lat Long 0 Point 2065 -5.51666 106.48333 1 Point 2319 21.93333 120.73366 I also have polygons layer : FID Shape ...
20
votes
8answers
1k views

How to easily shift all features in a vector dataset?

Let's say that I put together a Shapefile and all the features have their vertices shifted by a constant amount. What's the easiest way of shifting all the features (hence the (x,y) position of their ...
6
votes
1answer
442 views

Is there a way to access QGIS plugins in Python?

Is there a way to access QGIS plugins in Python? I'd like to write a script to do some geoprocessing, and I'd like to use the clip, regular points and convex hull tools in fTools, as well as the Road ...
7
votes
4answers
2k views

How to develop GUI in Python for geoprocessing?

I want to develop GUI in Python for geoprocessing, but I don't know what is the best GUI tool or library (Tkinter, PyQT, wxPython) for geoprocessing? Can I use PyQT for GUI programming in ArcGIS?
0
votes
0answers
39 views

Why has Arc's Analysis Tools>Overlay>Identity tool not populated the fields in the output table with the input features' attributes?

I've benefitted from the answers on this site a couple of times - thanks all!!, but this is the first question I have posted. I'd like to know the stream length in a number of watersheds I'm working ...
23
votes
2answers
961 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 ...
4
votes
1answer
60 views

Switching between background 64 bit processing and 32 (so I can use 3rd party ie XTools)

I often run scripts now with 64 bit background processing enabled but when I want to use certain tools like Xtools table to text I have to turn it off as these tools are 32 bit. Is there a way to ...
1
vote
0answers
31 views

Cancel event in Python Gp tools with arcpy

In GP-tools written in C# (ArcObjects) we can listen for the Cancel-event and react on that. I wonder if there is anything similar in Python GP-tools applying arcpy. I googled that issue and the only ...
7
votes
1answer
77 views

Reduce processing time in Erase function using Arcpy in IDLE

I am processing 18,000 feature classes (saved in a file GDB), each with ~500 records (polygon features) in ocean areas, and I am running a script to remove area overlapping with the coast, using the ...
1
vote
0answers
510 views

Conversion to Raster issue in ArcGIS 9.3.1

Trying to convert a polygon to raster in ArcGIS gives me an error... I am wondering if there is another way around to do this? I am using ArcGIS 9.3.1. The error i am getting is number 9999 when I ...
1
vote
0answers
64 views

Error Input FeatureClass Arcgis 10 VB.net And Geoprocessing

I have a problem when i execute GeoProcessing in ArcEngine 10 with VB.net i had create the toolbox : Models.tbx and Model Process : disolveRoute with 2 parameters My Function is : Sub diso() ...
2
votes
1answer
97 views

ComException -2147467259 Arcgis 10 VB.net +Geoprocessing

I have a problem when i execute GeoProcessing in ArcEngine 10 with VB.net i had create the toolbox : Models.tbx and Model Process : disolveRoute with 2 parameters My Function is : Sub ...
3
votes
1answer
381 views

How do you convert raster to polygon while avoiding small polygons

I intend to convert a raster to several polygons, but I want to ignore too small polygons, and just keep larger polygon. How can I do that? Thanks in advance!
2
votes
2answers
128 views

Point transects along a line

I would like to create a point shapefile that will contain sampling points along, and perpendicular to either side of a track route that I have as a line feature in ArcGIS 10.1. The points on the ...
0
votes
1answer
352 views

How do I tell my geoprocessing service which sde feature class to update

I want to have a geoprocessing service update sde. I am getting an I/O Error saying data doesn't exist. I imagine because the connection file (copied from my ArcCatalog folder) I placed next to the ...
2
votes
2answers
87 views

Create point geometry in a feature class with all the attributes prepopulated

So here is the problem. I have a text file with space delimited values. A standard text file with the headings separated by spaces and then on each next line values for these headings (columns) also ...
2
votes
1answer
53 views

point of intersection issues

I have a table containing a set of points of intersections. Most of the roads intersects whith just one road BUT i have some roads which intersects with two, therefore three different point of ...
2
votes
0answers
262 views

Proximity Toolset Questions - Description, Examples of Usage, and Limitations

I was wondering if you could help me answer a few questions about the Proximity Toolset. I have been given the task of describing each tool in laymen terms, the typical usage of each tool, and most ...
0
votes
0answers
62 views

R Raster package: write NetCDF with time dimension

I am writing a rasterbrick with multiple layers to a netcdf file using the raster package in R: writeRaster(gridfile, "Data", "CDF", overwrite=TRUE, ...
2
votes
1answer
35 views

Collapsing the multi-row output of a one-to-many spatial join to single-row (arcmap 10.1)

I'm working with TIGER data, looking at the relationships among incorporated places and counties. Not all places are completely contained by counties; some do span multiple counties. In the final ...
2
votes
0answers
65 views

Custom c# GP Tool ArcGIS Server 10.1 - build for 'Any CPU', x86, or 64bit? Does it matter?

I think I understand most explanations of these targets, but I get confused in the context of ArcGIS customizations like this because what we are compiling has to work in conjunction with ArcGIS, not ...
1
vote
0answers
38 views

Clipping Buffers

I have buffered a line shapefile where many lines are intersecting but not broken at intersections. I am trying to select each record in the buffer file and clip all intersecting polygons in the same ...
5
votes
4answers
989 views

explode overlapping polygons to new non-overlapping features

Given multiple polygons that overlap in multiple ways, I would like to export from this feature all polygons that don't overlap with others iteratively. The product would be a number of features with ...
4
votes
2answers
90 views

Moran's I z-score in ArcPy

I have a ArcPy script to calculate Moran's I several times (50 to be precise). However, I am not interested in the Moran's I value, what I need is the z-score returned by the tool. Even though the ...
3
votes
1answer
39 views

What is the max. length of string for GP output?

I have an XML as the output of Geo-processing tool. I am keeping it as a file right now but another developer wants it as return value. So what is the maximum possible length of this String output? Is ...
5
votes
1answer
150 views

Simulate (Mock) GPS Tracks

I have the following scenario: 1) I need to create GPX files for use in testing of a mobile device. 2) The tracks to be described within will span large distances over long time periods (i.e. it's ...
1
vote
1answer
184 views

ArcGIS 10.1 - c# custom geoprocessing function tool - how to populate a polyline output parameter?

I'm at 10.1SP1 with VS2010. In my tool's ParameterInfo property I create an output GPParameter object of IGPParameterEdit.DataType GPLineTypeClass. Then in the Execute() method I do work that ...

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