This tag should only be used for questions concerning the ArcGIS Platform from Esri (as a whole). Try wherever possible to use a product tag such as arcgis-desktop, arcgis-server, arcgis-mobile or arcgis-online on conjunction with a version tag such as arcgis-10.1, arcgis-10.0 or arcgis-9.3.

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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 ...
26
votes
4answers
1k views

How to use directional shading on boundaries for cartographic effect?

The attached screenshot of a National Geographic map shows some beautiful directional shading of boundaries. I'm trying to reproduce this sort of shading for a burn perimeter map, as I want to ...
21
votes
3answers
3k views

How to hide “internal” polygon boundaries?

We've been scratching our heads over how to tackle this for some time, and are no more illuminated than when we started. I hope you can help. Our task is thus: how to draw a lake with a solid outer ...
21
votes
1answer
698 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 ...
15
votes
0answers
649 views

Hidden Features of ArcGIS [duplicate]

ArcGIS is one of the most popular software-packages available for GIS. What are the lesser-known but useful features of the ArcGIS? Which little/hidden tricks do you known that make your experience ...
14
votes
4answers
5k views

The simplest way to uninstall any and all ArcGIS products?

What it is the simplest and most straightforward way to uninstall any and all ArcGIS products more or less in one go that might be present on a Windows machine? perhaps scriptable? Add/Remove ...
14
votes
5answers
19k views

How do you cite ArcGIS?

When writing papers, is there a standard style that should be used for citing ArcGIS, specifically ArcMap? In particular, how do you reference a specific tool that you used in your analysis. I'm not ...
14
votes
5answers
3k views

Using ArcGIS 10 on a virtual machine with OSX

I'm currently using ArcGIS 10 on a Windows 7 64 bit Macbook Pro (2.53 Ghz and 8GB of RAM) using VMWare. However, when I am using ArcGIS I find it quite slow even with Windows 7 (64-bit) optimized for ...
14
votes
3answers
591 views

Ecological geospatial conundrum

I am looking for a different, more elegant solution to a spatial statistics problem. Raw data consists of an x-y coordinate for each individual tree (i.e. converted to a point .shp file). Although ...
14
votes
3answers
470 views

How to determine if trees within forest gaps are clustered?

The attached dataset shows approximately 6000 saplings in approximately 50 variable sized forest gaps. I am interested in learning how these saplings are growing within their respective gaps (i.e. ...
14
votes
2answers
936 views

What is the best practice for data management? [duplicate]

I have always been curious how other folks are storing their spatial data. Outside of an enterprise environment where much data is stored in enterprise geodatabases, is it better to store data per ...
14
votes
1answer
463 views

Hand drawn sketchy symbology styles for GIS software

Often times in planning projects, a hand drawn, sketchy look is desirable in order to convey the preliminary nature of a project. Is anyone aware of any utilities/plugins for desktop GIS software ...
13
votes
4answers
2k views

Data naming convention - starting with a number

My company uses ArcGIS and has a project and data file naming standards in place and (for the most part) followed. Something that has always bothered me about he naming standards is that it mandates ...
13
votes
5answers
339 views

Python Development Project - Team working

We have a development project in Python (ArcGIS 10). This project involves a mixture of toolboxes, map templates, layer files, file geodatabase templates (acting as templates being imported into a ...
13
votes
3answers
6k views

How do I change geotiff “no data” color to white/transparent rather than black?

I am preparing data for inclusion into a geonetwork node, where the maps are displayed via geoserver. The problem is that cells that have"no data" are displaying as black in the geotiff and I am would ...
13
votes
1answer
726 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 ...
12
votes
4answers
2k views

Are the ESRI .lyr and .mxd data format specs published?

Are the binary formats of .lyr and .mxd files published?
12
votes
3answers
2k views

Is PhD in GIS useful in non-educational career path?

A bit of an open debate - I am curious for your opinions. I am considering commencing a PhD in GIS which may concern the application of surveys within the natural environments. Eventually, I wish to ...
12
votes
5answers
5k views

Use arcgis with SQL Server 2008 as a backend

I'm wondering how best to use arcgis] and sql 2008 together. At the moment we run manual imports and exports between sql 2008 and arcgis 10 shape files. With sql 2008 having a geography data type I ...
12
votes
4answers
7k views

Create Centrelines from Road Polygons

I want to create center lines from road polygons. Is there any automated tools in Arcgis or any other GIS softwares. I am attaching the Screenshot of my vector file also.
12
votes
6answers
1k views

What's an efficient way of detecting road junctions on a map?

I may receive maps from any source for my project, and for the C++ algorithm I'm making, it's imperative for the algorithm to know where road junctions (nodes where more than two road segments meet) ...
12
votes
6answers
809 views

What is the best way to visualize multiple large LIDAR tiles?

I want to load approximately 10 large LIDAR tiles for analysis. I have tried using ArcScene but it appears there is a limit on how much data ArcScene can handle at one time. Each tile is 65-90MB in ...
12
votes
4answers
5k views

No way to De-authorise ArcGIS Server? How to get license back?

At v10 of ArcGIS Server, from what I understand of the new license model, it is not possible to de-authorise ArcGIS Server (like you can with Desktop) Clients have visibility over their licences with ...
12
votes
3answers
5k views

Free tool to convert .lpk to .shp file

I have a .lpk file from ESRI that I would like to convert to a shapefile. How can I do this, using only free software?
12
votes
3answers
1k views

Future of spatial databases

It may be a bit off-topic. I am eager to know the industry specific importance of Spatial Databases. Is Spatial Database a very important part of any GIS system? Or will we use other technologies to ...
12
votes
2answers
308 views

Arcpy adds erroneous interior ring when writing adjacent, multipart geometry

I've run into an odd issue when using Arcpy to write multipart geometry to a shapefile. I am using an InserCursor to create a multipart feature from a list of parts each with a list of vertex pairs. I ...
12
votes
2answers
686 views

ArcGIS Buffer accuracy problem

world, once again I encounter something very strange with ArcGIS. I perform a buffer analysis on one side of a polyline. There seems to be a serious accuracy problem and I can't figure out what the ...
11
votes
9answers
779 views

How far ESRI Technical Support goes?

Given the number of questions about basic/intermediary usage of ESRI products on this site and in a lot of other mail lists, I became curious to know why people don't ask them to the technical ...
11
votes
7answers
3k views

How to obtain overlapping semi-transparent circles effect?

I have been trying to obtain the following markers effect. How can I do the same in ArcGIS (or any free software)? This image is from a book.
11
votes
3answers
503 views

Modelling of rent prices - which interpolation method should I choose?

I have national dataset of ~1,4 million households. There I have information about rent, size (number of rooms and m2) and some additional characteristics of each household. I'd like to use this data ...
11
votes
3answers
613 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 ...
11
votes
7answers
713 views

Free / Open source GIS Education sources

I'm looking for free / open source GIS education sources for advanced GIS users. Specifically sources that cover programming, spatial analysis, modeling, spatial databases / data management. I use ...
11
votes
4answers
3k views

How to manually break statement execution in python console of ArcMap

How does one break the execution of a long-running process in the python console of ArcMap? For example, how do you break a long iteration like the one below once it is started? for i in range(1, ...
11
votes
3answers
899 views

Are personal geodatabases better suited for quickly querying indexed attributes than file geodatabases?

I'm preparing data for an ArcEngine application that queries the data to search for an address. Sometimes we search just on the street name field, just on the house number field, or both. When using ...
11
votes
1answer
845 views

How can I display raised error messages to the user in the ArcGIS geoprocessing results window?

Question: Can print statemnts raised from a custom exception be displayed in the gp results window? Background: I modified a script that I found that takes two inputs from a user, finds the ...
11
votes
1answer
2k views

Why do simple joins on small datasets slow down ArcMap so badly?

ArcGIS 9.3.1, ArcInfo. I have some small file geodatabase and SDE featureclasses (few thousand records each, 50 columns) that I am doing attribute joins on. After the joins, drawing of the map is ...
11
votes
1answer
529 views

Stop ArcMap from probing missing data sources on launch

When migrating a map from one environment to another (say, from an existing client environment to our development environment) we're often given MXD documents that represent the map. These documents ...
11
votes
4answers
1k views

ArcGIS - How do I group corner-touching contiguous polygons?

Using ArcGIS 10, I have a Feature Class which I converted from a Raster (GRID) (Raster To Polygon Tool). There are approx. 180,000 polygons. The attribute table contains a [grid_code] field which ...
10
votes
6answers
854 views

Are there any convenient sources of color palettes to use in ArcGIS software while producing maps?

Since it was asked in Beta and I want to know the answer, I post it here.
10
votes
2answers
2k views

Has ESRI made any definitive announcements about 10.1 SP2? [closed]

My organization is awaiting SP2 before we can move our primary GIS team from 9.3.1 to 10.1. I have been testing 10.1 and have found a particularly bad bug that we've been told will be addressed in ...
10
votes
2answers
10k views

How do I add a shapefile in ArcGIS via Python?

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 ...
10
votes
1answer
1k views

Can ArcGIS 9 and 10 coexist peacefully on same computer?

We have a copy of Hawths tools that only work in ArcGIS 9.3, so I would like to keep it on my computer. However, most of the work we do in our lab is done with ArcGIS 10. Therefore, would it be OK to ...
10
votes
2answers
2k views

Is there a Free Aggregate Points tool out there for ArcGIS 10?

I need to do some Getis-Ord analysis but first I need to aggregate my points. I know of XToolsPro, but the aggregate points function is locked and you must purchase a license to use it. I am ...
10
votes
3answers
8k views

What is the difference between FID and OID

What is the main difference between OID and FID in ESRI software?
10
votes
7answers
1k views

Open source Cloud GIS

I'm looking for an open source cloud GIS solution. Current situation: Up to 100gb of data stored in file geodatabases that is updated daily. Data is used to create maps as well as geoprocessing ...
10
votes
2answers
1k views

Methods for optimizing multcore processing in ArcGIS

I am interested in learning methods to utilize the full extent of multicore processing power available on a desktop computer. Arc states that background geoprocessing allows the user to utilize ...
10
votes
4answers
2k views

Best place for (structured) ArcGIS tutorials

I've been through University for a Geography degree and am now working on a PhD in Remote Sensing. As part of my undergraduate degree I did a couple of GIS courses, but they concentrated mainly on the ...
10
votes
3answers
9k views

Extract Raster Value into Polygon Attribute

I have Raster Data for a State which has Elevation Data in its pixels. I also have Vector layer which has the 300 divisions of State. what I need is, I want to get the average elevation value of ...
10
votes
4answers
971 views

Performance - using multiple file geodatabases as opposed to one

I'm trying to decide the best way to organize my data for an ArcEngine application. I am particularly interested in map display and query speed. Currently I have all of my data separated into separate ...
10
votes
3answers
4k views

How to merge two 'incompatible' polygon layers in ArcGIS?

I have two layers of polygons with administrative boundaries. Although they come from the same data provider, they seem to have small discrepancies and do not 'fit' each other. How could I merge ...