ArcMap is the main application of ArcGIS for Desktop and the tag for that (arcgis-desktop) should normally be used in preference

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31
votes
11answers
18k views

How to connect to PostGIS database from ArcMap?

How can I connect to a PostGIS database from ArcMap? Solutions for ArcGIS 9.3, 10.0 and later are acceptable. Ideally, I would like to be able to perform spatially enabled queries and receive the ...
25
votes
10answers
31k views

What is the simplest method to add GPX files into Arcmap?

What is the smoothest route, the easiest user experience, to add gpx files to Arcmap? (update) Basically, ideally, I'd like to interact with .gpx with the same facility as .shp, being able ...
22
votes
1answer
5k views

Calculating Flow Direction and Delineating Basins from Projected vs. Unprojected DEM Data

This is somewhat of a theoretical question stemming from some discussions with colleagues on the topic of implications with delineating basins with projected (e.g., Albers Equal Area) vs. unprojected ...
19
votes
3answers
1k views

How to count consecutive pixel values for a set of rasters?

I'm using ArcGIS 10 with Spatial Analyst. I have a set of rasters (8 in total) that only every contain a 1 or a 0 for each cell. Each raster represents a different years worth of data. For arguments ...
18
votes
3answers
8k views

Optimal video cards for GIS programs

I recently purchased a Dell XPS-8300 (i7-2600|16 GB DDR3 RAM|64-bit Windows7) which I intend to use primarily for GIS programs. I bought a refurbished model because it was much cheaper and because I ...
18
votes
5answers
15k views

How to produce a better inset map?

Attached is an example of a generic inset map designed in ArcMap 10. For all the wonderful things that this software can accomplish, there has to be a more sophisticated way to produce better looking ...
18
votes
5answers
25k views

How do I change the data source for all layers in an MXD?

I have an MXD. It connects to about 30 layers in one of our SDE databases. I want to change the SDE database they connect to. Is there a way to do this without having to right-click every layer and ...
16
votes
8answers
33k views

Extracting coordinates of polygon vertices in ArcMap?

I've got about a dozen polygons in a feature class loaded in ArcMap 10, all in geographic WGS 1984. How do I easily obtain the coordinates associated with each vertex of each polygon in that feature ...
16
votes
5answers
4k views

What makes a MXD file size larger and how to decrease its size?

I know that MXD contains information about layers, symbology and configuration of default tools. I have a few that are exceeding 50 MB and are starting to take a while to load up. What are some of ...
16
votes
3answers
3k views

Producing building shadows using ArcGIS Desktop?

How would you generate building shadows from building footprints? I have attribute values for the heights of buildings. So would preferably like to have the shadows' sizes vary based on that. The best ...
16
votes
9answers
14k views

Why won't ArcMap 10 snap?

I'm really confused by this. ArcMap will seeminly randomly decide to not allow snapping when editing. Sometimes its only for certain features, sometimes for only parts of the same feature (e.g. one ...
15
votes
6answers
17k views

Performing a reverse clip in ArcMap?

Is there a way to perform a 'reverse' of the clip function in ArcMap, I'm not exactly sure how to explain this so here's a diagram:
15
votes
6answers
6k views

Find/Replace Double Quotes using Python Parser of ArcGIS Field Calculator?

I'm trying to use the Field Calculator (ArcMap 10.0) to strip out double quotes in an address field (I didn't put them in there, believe me). I've tried many incantations but am still unable to even ...
15
votes
7answers
30k views

Select distinct values from a single column of an attribute table (or layer)

Is there a way to select distinct values from a column in ArcMap? I have the data in both GDB and SHP formats. I have searched for ways to select using SQL, QueryLayers, ModelBuilder and individual ...
15
votes
7answers
11k views

Recalculating full extent of File Geodatabase feature class?

I have a featureclass in an Esri file geodatabase. When I edit the features using the editor in ArcMap, and I delete most of my features and keeping only the ones in the middle, the zoom to layer ...
15
votes
6answers
7k views

Copy, not export, a table from Arcmap

How can I copy a table, or selection of rows or columns in a table, from Arcmap without going through the pointy-clicky-typey exercise of Export table? The destination of said copy could be anything: ...
15
votes
4answers
11k views

Adding PDF (especially GeoPDF) to ArcMap as data?

I receive a lot of PDF maps (vector, image, with georeference and without) and I am having to convert them to an image file before I can add them to ArcMap and georeference. I can't see any obvious ...
14
votes
5answers
4k views

Is Hillshade option in ArcMap rubbish or is it me?

Here is a pretty pic of the raster I am using - with no effects applied - just the color ramp and historgram adjusted to show out all the relief - all be it in a very 2D way! I have a raster layer ...
14
votes
2answers
7k views

Correcting gaps and overlapping polygon (parcels) geometry

I have come across a resource that we rely upon almost daily that is in terrible need of repair. It is not our own product and the supplier is generally not interested in fixing the problem. We are ...
13
votes
3answers
4k views

Deleting large numbers of fields in ArcGIS 10

It there a good strategy for deleting a few thousand fields from the attribute table of a shapefile in ArcGIS using either ArcMap or ArcCatalog? I know how to manually right-click and choose 'delete ...
13
votes
3answers
15k views

Automated/geoprocesing tool to slice, clip, or cut polygons using polylines using ArcGIS Desktop?

Looking for a simpler method here. I am trying to split up / cut / slice existing polygons by using existing poly-lines. An example would be splitting a water body or land parcel at the point where a ...
13
votes
1answer
2k views

How to get selected Features/Geometry from Windows Clipboard in ArcMap/C#?

I have a custom tool in ArcMap 10. The Workflow is the following: Select Features in a Layer with the "Select Features by Rectangle" tool Copy the Features to the Clipboard using STRG+c Select the ...
12
votes
7answers
6k views

ESRI ArcMap Add-in with app.settings not recognizing app.config changes

I have an ESRI Add-in developed for ArcMap which requires a configuration file. After spending a while trying to read config values from a single App.Config file (and always getting null) I believe ...
12
votes
4answers
3k views

Comparing two Digital Elevation Models (DEMs) from LAS files?

I have two Lidar las files, one is original let's say with X points. And the other is copy of the first las file but with Y points, where Y is less than X. Now, I want to compare how the Digital ...
12
votes
1answer
392 views

Python increasing the filesize of my .mxd

I have a geoprocessing script that runs the following.. arcpy.AddMessage("TEST...") Yes just one line of code. A blank .mxd starts at 391kb for me as I run my script and save the filesize ...
12
votes
1answer
688 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 ...
12
votes
1answer
2k views

How to increase the display performance of Bing basemaps in ArcMap?

I'd like to know if there are ways (within ArcGIS itself) to increase the display performance of basemaps within ArcMap. The internet connection was recently upgraded, so it is much faster than ...
11
votes
3answers
1k views

Which data format typically displays fastest in ArcMap?

My organization is working on an application running on ArcGIS Engine. Previous versions of the application used primarily Shapefiles for displaying roads, parcels, buildings, etc. Since I was ...
11
votes
1answer
17k views

Creating and re-using map template in ArcMap?

I am using ArcMap 10.1 and working on a project which requires 5 different analyses on the same data. I created five map documents (.mxd) and completed my analyses. Now, the problem is that I want to ...
11
votes
4answers
13k views

How to Partition Line into Segments using ArcGIS for Desktop?

I have a shapefile of U.S. states. I extracted the boundary between two states, resulting in a line segment. For example, the boundary between Georgia and North Carolina. Is there a way to further ...
11
votes
1answer
6k views

How do you view multiple tables at the same time in ArcMap 10?

My original question was: How do you undock the tables in the ArcMap attribute window? because that's how I thought it should work in the new ArcGIS 10 docking environment. Either it isn't ...
10
votes
4answers
4k views

How to extract the number of vertices in each polygon?

I have ArcGIS Desktop 10.2 and my challenge is how to extract the of number vertices in each polygon for all features like this: I have many parcels in my feature class and I want to extract ...
10
votes
5answers
10k views

How to change the order of features in a shapefile?

I have a shapefile and I want to change the order of the features. Is that possible?
10
votes
4answers
20k views

Tool or process to automatically snap endpoints of polylines within given proximity using ArcMap?

I created a network of polylines that were all supposed to be connected. However, I just realized that many of the endpoints of the lines aren't connected, but are very close. I think there should ...
10
votes
3answers
8k views

How to round a column in attribute table (ArcMap)

I want to use the Field Calculator in ArcMap to round an existing column to two decimals. Currently I have a column that is 6 decimal places long and would like to simply round it down to 2 decimals. ...
10
votes
5answers
35k views

How to split a polygon into multiple equal-width polygons in ArcMap 10?

I am adding parking spaces into a parking lot, and I need them to be exactly the same shape and not overlap each other or have spaces between. In ArcMap 9.3, there was an editing task that allowed you ...
10
votes
1answer
11k views

How to perform If Statement in Field Calculator of ArcGIS for Desktop?

I have a shapefile containing two numeric fields ("Dist_1" and "Dist_2"). I want a Field Calculation that will populate an additional field ("Result") with one of three answers: First if Dist_1 is ...
10
votes
1answer
3k views

How to create sidebar help information for Python script tools of ArcGIS Desktop?

I have been creating custom tools (Python script tools) using Python with the ArcPy module. I can set up the tool successfully with parameters and all, but I cannot figure out how to create help ...
10
votes
2answers
2k views

Inserting newlines in Rectangle Text elements via ArcPy causes overlap?

I ran across an issue the other day when I tried to use ArcPython's mapping module to edit rectangle text elements with newlines (\n) in an ArcMap document. Here's what the output looked like: ...
10
votes
5answers
2k views

How to identify “true arcs” in Arcmap?

This is really annoying: the only good way of creating circles in ArcMap is using true arc, (compound curves) but I need to convert those to vertex (densifying) because of a compatibility problem. I ...
10
votes
1answer
3k views

Is there a way to show a layers feature count in the TOC?

I'm using ArcGIS 10. In ArcMap's table of contents (TOC), is there a way to have the "Layer Name" automatically show a count of the total number of features in each layer? I was thinking the TOC ...
10
votes
1answer
327 views

ArcObjects equivalent to ArcMap Flip button?

In an ArcMap extension, I need to flip multiple lines from a selection. The ArcMap Flip button only allows you to flip one feature at a time. What's the ArcObjects equivalent to ArcMap's Flip ...
10
votes
1answer
1k views

Programmatically determine ArcGIS Layer(*.lyr) file version

I've been through IStorage, Microsoft Compound File Spec, ArcObjects deserialization etc. trying to detect the .lyr file version. Using ArcObjects, I can get at the Layer properties, data source, ...
10
votes
3answers
4k views

How can I mosaic images in ArcMap without it affecting the colour?

This is 4 images (NE, SE, NW, SW) sections of imagery. They have some overlap between them. Working with 1m 3-band orthoimagery. Different parts are sometime flown at different times/sources hence ...
10
votes
2answers
2k views

Shapefile to SVG with ArcMap (while retaining country attributes)

Does anybody know how to export the Natural Earth 1:110m shapefile to SVG with ArcMap while retaining the country attributes? From SVG I'm gonna try to convert it again over to RaphaelJS to achieve ...
10
votes
1answer
3k views

Permanently Change ArcMap's “Maximum Sample Size” Setting?

I've lately been working on feature classes with a huge number of polygons (e.g. all of the Census blocks within the Chicago metro area). I've been needing to symbolize them by quantities a fair ...
9
votes
4answers
9k views

Dissolve not working in ArcGIS 10

The dissolve tool is not working for me when I use ArcGIS 10. It works perfectly when I use version 9.3. Any help?
9
votes
5answers
18k views

Creating polygons around extent of similar points using ArcGIS Desktop?

I've millions of points collected for lithology layer. They have used a coding for different types of rocks. I need to create a polygon around the extent of similar points. What is the easiest ...
9
votes
3answers
3k views

Defining parameter descriptions for Python Toolbox help?

I'm trying to create some Python Toolboxes for our ArcMap application (e.g. MyTool.pyt) I can see that the help text is defined with the classes self.description attribute. However, once I run the ...
9
votes
2answers
8k views

Setting which layers are selectable in ArcMap?

I cannot figure out how to toggle selectable layers in ArcMap 10. In 9.3, I remember being able to choose from a list which layers I wanted to be able to select features from in the map. Let's say ...