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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Extracting Overlapping Parts of Single Polygon Layer using QGIS?

I have a single polygon layer with over 200 buffers with a lot of overlapping areas. I want to use QGIS to create a new layer representing the overlap. I've seen several questions that are similar, ...
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3answers
528 views

Is it possible to add python util scripts as shared libraries to esri geoprocessing toolbox?

We have GP tools in GP toolbox OurServices.tbx and some of them are written in Python. We access them via geoprocessing services. However some Python functions are just copy-pasted from one GP ...
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3answers
504 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 ...
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1answer
361 views

Adding new nodes in the middle of each líne of a Polygon

I am currently working on a Street Lighting Network. I have two layers in PostGIS ( PostGIS 2.1.3 and PostgreSQL 9.3.5): Manholes (56.000 Polygon) Pipes (Linestring) The manholes are perfect ...
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1answer
353 views

Creating feature from part of state boundary in shapefile of U.S. states?

I have a shapefile of U.S. states. I want to create a feature layer from it so that I can do a Near analysis with it. Suppose that I am interested in the Georgia boundary, but only the part of ...
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3answers
2k views

Split and count overlapping features within a layer

I would like to split a shapefile in qgis according to how the polygons overlaps. See pic for explanation:
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1answer
548 views

What parts of ArcGIS 9.3 Geoprocessor Programming Model diagram are not relevant for ArcGIS 10?

The geoprocessor programming model was an excellent tool for python scripting using ArcGIS 9.3. There is still no equivalent diagram for ArcGIS 10 - although there is a request on the ArcGIS ideas ...
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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 ...
5
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1answer
568 views

Automatically snapping points to line ends on two separate layers?

I have US interstate ramp end location data points that I need to match road network data. All the points are off by a few meters as they were collected in the field. I am hoping there is a way to ...
5
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1answer
747 views

Obtaining Each Unique Area of Overlapping Polygons in Postgres 9.6/Postgis 2.3

I have recently finished compiling Postgres 9.6/GDAL 2.2 and Postgis 2.3 and am looking to build a generic, efficient solution for obtaining each unique area of polygon overlap within a given dataset ...
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2answers
517 views

ArcPad Checkout from python command line

I have been developing a script to automate my ArcPad checkin/checkout processes. My problem is that I am having trouble getting arcpy to recognize the ArcPad tools from the command line. From the ...
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2answers
840 views

SelectLayerByLocation not Selecting

I have been trying for some time now to create a script to extract the polygons within an extent, but am unable to get the same result as when I use the user interface manual method. Maybe someone ...
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1answer
1k views

Showing Progress Dialog in ArcGIS Desktop using ArcObjects?

I have an ArcGIS custom IGPFunction tool. I want to use the GP progress dialog not the progress bar at the bottom of the ArcGIS 10 window as I don't want people to interact with the map whilst it's ...
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1answer
1k views

Using Merge GeoProcess task in ArcGIS Engine with C#?

Having the hardest time getting the correct syntax when adding layers as gp parameters to call the Merge_management GeoProcessing Task. Below is just one of MANY, MANY ways I have tried with no luck. ...
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1answer
1k views

Setting “REAL” work/scratch workspace in ESRI/ERDAS etc

I thought the issue was only in ARCGIS but it seems that ERDAS does the same thing. I have my C with 1.7TB and my D with 10TB and my scratch set to d:\scratch but still ERDAS (and ESRI) fills my ...
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4answers
3k views

Is there a way to convert 3D polylines to 3D points in ArcGIS?

I need to convert a huge number of very dense (densified to 1m) 3D polylines to 3D points. I need each vertex along the line and no duplicates (two of the same XYZ coordinates) if possible. Is there ...
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2answers
62 views

Generate parcel-adjacency polygons?

I have a parcel layer (blue polygons) and a road centerline layer (black lines). I want to generate polygons that represent the portion of the road right-of-way that is adjacent to each parcel (...
5
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1answer
175 views

How to check spotheight in closed polyline contour data using ModelBuilder or ArcPy?

I'm new in using ModelBuilder or Python script. So, i have a set of contour data and a good contour data should contain a spotheight* in every closed polyline contour data. Is there any solution to ...
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2answers
1k views

How to check whether an optional FeatureSet parameter was set by the user in a geoprocessing script tool?

I have created a custom geoprocessing script tool which contains an optional FeatureSet parameter. When unpacking the parameters in the script, the FeatureSet is defined as a RecordSet object, even ...
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2answers
2k views

How do I publish a custom .NET GP Tool as a GP Service on ArcGIS Server 10.1?

I have a GP Tool that I am able to publish as a GP service at 10.0. I recompiled the DLL for 10.1 and have followed the steps in the Deploying custom .NET and C++ tools page of the 10.1 help doc. ...
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1answer
391 views

ArcObjects 10 Java SDK

I am being tasked with converting a AGS geoprocessing toolkit currently written in AO 10 C# SDK to AO 10 Java SDK. Are there any resources out there which show an end to end example of creating an ...
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1answer
298 views

Does Google Earth Builder support server-side geoprocessing?

Is there a feature in Google Earth Builder that supports server-side geoprocessing? For example, say I upload two large geo datasets to Google's cloud: one with lots of points and another with lots ...
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1answer
58 views

Resolve Intersecting areas in shapefile

I combined two shapefiles and noticed that the polygons didn't overlay perfectly. How can I resolve these intersections to snap to their closest neighbours? This is a closer look at the intersections:...
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1answer
248 views

Clip line close to polygon

I want to clip a line layer that I have, only within a polygon. Used Vector -> Geoprocessing Tools -> Clip, and I do get most of line I want that is EXACTLY within the polygon layer. Thing is the line ...
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2answers
379 views

Identifying a cluster of polygons based on attributes

I'm trying to identify a cluster of contiguous parcels that, when combined, add up to at least a given size and, when combined, have an assessed property value less than a given $ amount. I have a ...
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1answer
512 views

How to divide a polyline by intersecting isochrones

I have two shapefiles, the first representing a path (a polyline with a single category), the second representing isochrons from the same origin (point 0) which intersect the above mentioned path. I ...
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1answer
3k views

Opening geoprocessing tools causes ArcGIS to hang

I am getting the same problem as http://forums.arcgis.com/threads/19468-Opening-tools-causes-ArcMap-to-freeze-crash That is, when I open any geoprocessing tool in ArcCatalog (might happen in ArcMap ...
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2answers
549 views

Expand raster nodata area (shrink values area)

I need to fix a raster that's been inappropriately resampled along the nodata edge. The bad data area is narrow, pretty much a single cell. The value range is too variable to use a simple "erase less ...
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0answers
412 views

Call ArcPy script via CGI on IIS [closed]

I have an ArcPy script that does a whole bunch of processes with ArcGIS 10.1 to write the output data to a SDE geodatabase. What I want to achieve is to enable an online user to call the script and ...
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0answers
961 views

Configure Python with Geoserver [closed]

I am developing a WebGIS application with: Openlayers 2.12 PostgreSQL 9.2 with PostGIS 2.0 extension Geoserver 2.2.3 Apache 2.0 configured with Tomcat 7.0.35 PROBLEM One of the services of the Web ...
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2answers
11k views

Intersect Shapefiles using Shapely

What I'd like to try and do is intersect some point buffers with census tracts, maintain their ID's and the tracts attributes. I found a sample from http://www.macwright.org/2012/10/31/gis-with-...
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2answers
273 views

Which GIS best for this problem?

This problem is similar to retail presence optimization. I'd like to know which GIS's could help us do the following: Given a set of point locations, create a circle of radius n meters around each. ...
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2answers
453 views

Determining area of county land mass without water features using ArcGIS Desktop?

Here are the layers that I have: State / Province polygon file (With Area Field) County / Ward polygon (with no area field), but all the polygons are within the state boundaries Water ways for the ...
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5answers
8k views

Creating polygon feature class from area in one not covered by another using ArcGIS Desktop?

I am working on a project doing spatial analysis at a statewide level. I am looking at a form of transportation coverage in a state, and part of my analysis involves buffers and drive time polygons. I ...
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2answers
10k views

How to Select “Inverse” of intersection of two polygon layers?

I'm wondering if there's a way to intersect two polygon layers, take the intersection, and remove that from one of the polygon layers, making a new layer out of whatever is left over? Basically, the ...
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2answers
4k views

Finding the common borders between polygons in the same shapefile

The question is essentially the same as here, except that I want to do it in qgis. Thus, is there a qgis function equivalent to the ArcMap intersect function that will take a polygon layer and output ...
4
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2answers
4k views

Can I convert the sharp edges of a polygon easily to round edges?

I use the python module "shapely" to make Polygons (like below). Can I convert the sharp edges of a polygon easily to round edges? Such that when I have unified some polygons I could issue a command ...
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4answers
2k views

How to convert result of dissolved buffer into individual polygons?

I am wondering if there is a way to easily split results of a disolved buffer into individual polygons? E.g in the screenshot below all of these buffers are one item, can I split them into individual ...
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1answer
1k 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 ...
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2answers
2k views

Why is ICalculator.Calculate significantly slower than the CalculateField geoprocessing tool with SDE datasets?

I just discovered today that there are essentially two ways to calculate field values in ArcObjects: 1. Using ESRI.ArcGIS.GeodatabaseUI.ICalculator: ITable table = …; ICursor updateCursor = table....
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3answers
1k views

Correctly Transforming (Unprojecting?) from Lambert Conformal Conic?

I started out by posting https://stackoverflow.com/questions/6963991/how-can-i-transform-the-coordinates-of-a-shapefile In short, I found a shapefile here, and I want to be able to convert that to ...
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1answer
14k views

Calculate and add area of overlapping features within polygons

I have a polygon layer of watershed boundaries And a single multipart feature that contains all public lands for the state. I need to find the area of public lands within each watershed and add it ...
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1answer
991 views

How to calculate X and Y projected coordinate in batch processing

I have more than 1000 shape files (all are point features). They were initially in WGS 84. I projected them in UTM. Then through batch processing I added X, Y fields in each table. But all the X, Y ...
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1answer
308 views

How to return text from GP service?

So I've got a website that I want to extend by letting people look up postal/zip codes for an address they enter. I've already got all the addresses (with their postal codes) for the city in an ...
4
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1answer
554 views

Why is the Frequency Tool in ArcGIS so Fast and Efficient?

Why is the Frequency tool in ArcGIS is so fast and efficient? Is it possible to make my own Frequency Tool with similar performance (in python)? I tried to do some based on python dictionary and ...
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2answers
5k views

How to invert a Buffer(get the inside of a ring buffer)?

I have a line layer of a road network around which I create a buffer zone of 1000 m with Analysis Tools>Proximity>Buffer. But I am interested in the areas outside the buffer zone, and not the buffer ...
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2answers
6k views

Extracting elevation from a TIN file with a point shapefile overlay

I have a TIN file that was built off of contour polyline shapefile (I think). I have a point shapefile with a few points. How can I extract elevation of the TIN file where the points occur? I am ...
4
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1answer
2k views

Examples which use map reduce to process GIS data? [closed]

Have anyone have a few examples how to use mapreduce effective with GIS data?
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2answers
4k views

QGIS: Creating Circles Around Points Imported from a Excel File (Lat, Long)

I am new to the QGIS platform and have been experimenting with the tool. I currently have a Basemap layer and a Shapefile layer on top of it. Now, I want to import a .csv file containing (lat, long) ...
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2answers
4k views

Calculate area in square meters from degrees?

I have a polygon shapefile in geographic coordinate system, I would like to calculate area in square meters in QGIS using Python. Is there any formula or equation to do this?

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