Questions tagged [geoprocessing]

Geoprocessing is a GIS operation used to manipulate GIS data. If you are performing geoprocessing using ArcGIS then the tag Geoprocessing-framework is specific to that software and should be used instead.

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7
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2answers
2k views

How to cluster points of interest by lat lon for my WP7 app?

I have alread asked this question on SO, so I apologize if duplicating this is bad form. I will link to each of the sites if I get the right answer. I have a collection of my own PointOfInterest ...
17
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3answers
4k views

Is there a way to automate the preprocessing of LANDSAT data?

I'm currently enrolled in a remotesensing course, using LANDSAT data. Part of my course is about standardizing the scenes based on radiance values. I assume that because this is such a tedious task, ...
4
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2answers
2k views

Gaussian plume model [closed]

I'm looking for code to implement a Gaussian plume model in 3D. Any suggestions on where to start? Are there any python scripts out there?
10
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4answers
2k views

To what extent is SQL's language accessible via ArcGIS tools?

That question just sounds so redundant... At any rate, I have been asked to explore the uses of SQL in ArcGIS. We use an SDE DB for all server-side storage and DB managing/large-scale editing. However,...
6
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1answer
2k views

ArcObjects C#: Create Random Points fails with ERROR 999999: Error executing function

I am having trouble running some ArcObjects C# code that calls create random points. I would not be doing this in ArcObjects, but I am suffering with the same issue using Arcpy as seen here: http://...
3
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1answer
179 views

How can you map counties to congressional districts?

Given county A, I need to know what congressional districts are within it.
7
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2answers
963 views

Process a raster with multiple geoprocessing tools in arcgis 10 using python - flow between processes

I'm writing a short python script that includes processing rasters with different geoprocessing tools in ArcGis 10, for example, the three processes below, is this best way to use multiple tools ...
3
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4answers
1k views

Redistribute linestring vertices to specified distance

I use a groundwater model program called GMS, and it has a very useful function "Redistribute vertices" (more info). I use this function all the time to both simplify and provide regular spacings ...
3
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2answers
1k views

Is it possible to get arcpy on 9.3* or Qgis? Or maybe some of the functions?

If this isn't possible what would be the closest equivalent open source? Could parts of the module be ported to work on 9.3 or QGIS? I'm not sure if this would infringe on the license porting for 9.3.
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4answers
9k views

Finding Clusters of N Points Within X Distance using ArcGIS Desktop?

We have tried two methods of cluster analysis: Cluster and Outlier Hot Spot ... but neither meets our specification which has these 3 parameters: a Set of Point features N points within a Cluster X ...
6
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1answer
6k views

Watershed Delineation

I am trying to delineate just the catchment area of some lakes, and am wondering the correct way to do this. I already have a filled DEM, along with a flow direction and a flow accumulation raster. Is ...
0
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1answer
130 views

Given a geocode or geo location in US, how to find exits that are within some distance from the geo location for US?

We have a need to find the geocodes of US highway exits that are within some distance from a given geocode. I do not know how to do this? Can one please direct to the right source or provide a ...
3
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1answer
313 views

How to write binary ArcGRIDs outside of ArcGIS in linux?

I've been looking for a way to create\write binary formatted ArcGRID images in Linux without much luck. It seems the GDAL project only supports reading these files, but there is not write support. ...
4
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2answers
3k views

create temporary point geometry feature from coordinates in OGR with Python

I have two shapefiles containing two types of geometry features: one contains polygons and the other linestrings. Because I'd like to use the Within method to check whether the end(or start) of a ...
1
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1answer
141 views

How can I tell a GP model that exports a dbf to NOT add it to the 'List by Source' window?

I have a GP Model that simply exports a selected points lat and long to a DBF. I would like to make it so it does not add the table to the list by source window as it hangs for an annoying amount of ...
3
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1answer
989 views

WiFi Positioning System (WPS) setup

I need to develop a shopping mall GIS. I have no idea to develop it. The shopping mall GIS should function like GPS (guides user to desire shops). Do I need to set up some GIS device at each corner of ...
2
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1answer
1k views

Running Model within ArcMap using VBA?

I would like to Run/execute a model within ArcMap 9.3.1 vba. I can run it in vba by exporting out the VBS script and importing it into vba, however I'm wondering if there is an easier way to just call ...
13
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1answer
3k views

Displaying raised error messages to user in ArcGIS Geoprocessing Results window?

Can print statements raised from a custom exception be displayed in the Geoprocessing Results window? I modified a script that I found that takes two inputs from a user, finds the associated feature, ...
2
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1answer
1k views

ArcMap Geoprocessing VBA code/tool - smooth polygon

I would like to execute the smoothpolygon tool within ArcMap VBA and I'm having some trouble defining the parameters syntax for the tool. I'm getting this error below: ERROR 000622: Failed to execute ...
39
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8answers
15k views

Select features that do NOT intersect in PostGIS

This seems to me like such a simple question (and it probably is) yet I cannot seem to find an example that gives me the answer. Using PostGIS, I just want to select points that fall outside of ...
16
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4answers
811 views

How to handle TIME in GIS?

Is there any way or any idea on how to handle Time attribute in GIS? For example, which are the ways to specify that an object is at a place at a given time interval and them it is in another place ...
6
votes
2answers
844 views

Is there a RESTful way to cancel a GP Job?

I have an asynchronous gp service that I can successfully run and cancel from within Arcmap. Using fiddler I see that arcmap communicates with the GP service via SOAP. I'd like to cancel the job ...
6
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2answers
4k views

What is ArcGISCacheMgr.exe and why does it have a lock on my folder?

I've got a 10.0 gp service running on Windows Server 2008. The gp service writes to a folder on the server. The parent of this folder is shared. When it comes time to delete folders on the server, ...
3
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1answer
1k views

Consuming an asynchronous Geoprocessing service in ESRI's Flex API

I have been trying to consuming my own asyncronous Geoprocessing service using ESRI's FLEX api, but i am either doing something dumb, or there is some trick involved in getting the results out. Since ...
6
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9answers
13k views

ArcGIS: Create a line layer from a point layer and csv data file

UPDATED DECEMBER 20 I have a Regular point layer and a csv file that has the same ids as the point layer. The csv file is organized as ID From To Weight -- ---- -- ------ 01 ...
6
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1answer
316 views

How can I get more verbose messages from a GP service?

When I run a tool I've published as a gp service, the only messages I get are these: esriJobMessageTypeInformative: Submitted. esriJobMessageTypeInformative: Executing... ...
11
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1answer
915 views

How do I identify and gracefully kill hung Gp service processes?

I've published a gp tool as an asynchronous non-pooled gp service. When the gp tool hangs I would like to allow the user to kill it, without impacting other services. If I put a webservice on the ...
7
votes
1answer
604 views

Is there anyway to make GPModels with python scripts execute faster?

I do not know if anyone else has this problem but my GPModels that include simple python scripts seem to take way too long to execute. One example is a model I built which is a simple select feature ...
15
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6answers
1k views

PostGIS: Assign ID of point in layer A to closest point in Layer B

This should have been an obvious precursor (that I didn't ask) to my other question: How to create spider diagrams (hub lines) in PostGIS? If I do not know the relationship between a point in layer A ...
7
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1answer
145 views

Merging Issues doubling up

I have two shapefiles with some of the parcels (surveying) overlapping each other. How do you get those overlapping parcels and prevent them from doubling up? Is there a way you can have it ...
24
votes
8answers
2k views

Is there an architecture for distributed geoprocessing?

Suppose I have 50 computers on my LAN. Each computer has a geodatabase for all parcel polygons in a particular state in the US. I'd like to write a geoprocessing task that finds all parcels valued ...
8
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3answers
3k 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 ...
9
votes
1answer
312 views

Can I collect Seismic data with an array of cell phones?

Suppose I have an array of cell phones, each having: an accelerometer a clock a GPS receiver Windows Phone 7 (WP7) How hard would it be to write a program so that synchronizes the phones to a ...
6
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5answers
28k views

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

In ArcGIS Desktop, can you calculate as an attribute value the distance to the nearest polygon of type X? Assume we have a point layer of wildlife observations and we want to know how far each of ...
5
votes
3answers
495 views

Using Multiple ShapeFiles as a single address locator

Let's say I have 5 shapefiles, and I want to use them as a single address locator via the ILocator interface. What would you recommend? Merge the shapefiles into a single shapefile then convert to ...
3
votes
0answers
759 views

How to return FeatureLayer from gp service(using custom function tool) (.NET)?

My basic problem is that I have a custom function tool HLZCalulation that I created. It takes in a string to a file gdb , opens it, does some calculations, and then returns a featurelayer with the ...
7
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6answers
2k views

How do I generate code from ESRI GPServer wsdl?

I'm trying to use svcutil to generate code from this GPServer wsdl. So I run this command: svcutil GPServer.wsdl Which generates ESRI_Currents_World_GPServer.cs. The code has comments saying the ...
8
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7answers
2k 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 ...
14
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2answers
4k views

Avoiding fails from ArcObjects geoprocessing with .NET?

There are some nice features in ArcToolbox we can use, but for some reason, this is NOT working properly. It doesn't even throw me an error. My software is running inside ArcMap, so no need to ...
14
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2answers
4k views

How to import esri Personal Geodatabase (.mdb) to PostGIS on Linux

We have esri Personal Geodatabases that we need to import into PostGIS. Ultimately, we'd like to allow people to upload an MDB on a web server, and have it import the layers into PostGIS. On ...
0
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3answers
523 views

Need help understanding why gdal projections aren't giving me what I expect?

When using gdaltranslate and gdalwarp I specify the following transfomation (in for GCP's and translate, out for warp) +proj=lcc +lat_1=40.03333333333333 +lat_2=38.73333333333333 +lat_0=38 +lon_0=-82....
5
votes
4answers
2k views

Is there a way in the Google Maps API to perform a union?

I'm looking for a way to take the overlap area of multiple polygons and work with that result as a single entity, ideally all in the API.
1
vote
1answer
575 views

What is a good formula for calculating if a LatLong is within a radius (in miles) of a second LatLong?

If I have two LatLongs, what is the best way to determine if the first one is within a 10 mile radius of the second?
2
votes
1answer
1k views

How is distance between zip codes calculated?

Specifically, where can I find a database of zip codes, their lat/lon centers, and intervening "obstacles" (for example, zip codes that are geographically close but separated by the Chesapeake Bay).
25
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10answers
6k views

Existing solutions to automate generalisation/simplification of geographical data?

I am looking for existing solutions (softwares, libraries, methods, etc.) to automate the generalisation/simplification of geographical data as presented there, and also there. Do you know and use ...
9
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6answers
2k views

seeking “Available Sky” implementations

I'm looking for implementations of an algorithm called "Available Sky". ArcGIS (Spatial Analyst or GRID) is preferred, but solutions in GDAL, SAGA GIS or others are perfectly acceptable. The ...
6
votes
3answers
4k views

Is it possible to change spatial reference (and reproject) feature classes in-place, using ArcMap/GeoProcessing?

We have an Esri based system in production; a complicated data model with a large number of feature classes. We need to migrate the data to another spatial reference. The feature classes have class ...
7
votes
1answer
3k views

Inside buffer with attributes in ArcGIS?

How can I create buffers for polygons that: a) lie only inside the polygon boundary, and b) know who their parent is? An example of where this is useful is First Nation Traditional Territories. ...
11
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5answers
1k views

Background reading on using GPUs for GIS?

I'm interested in the emerging intersection between GIS systems and GPUs, which can provide orders of magnitude improvement to certain classes of GIS problems. Do you know of any good resources ...