ArcMap is the main component of the ESRI ArcGIS suite of geospatial processing programs.
12
votes
3answers
5k views
Layers having the same coordinate system should overlap, but they don't. What's wrong?
I put 4 different layers into my ArcMap document, but only one of them will show up on the map! I should be seeing the other 3 layers as well. When I do a Zoom to layer, I can see one layer, but I ...
14
votes
3answers
1k views
Port “Producing Building Shadows” Avenue code to ArcGIS 10
Whuber provided an answer here Producing building shadows? which required using Avenue code. Any idea how to make it work in Arc 10?
Thanks in advance.
22
votes
9answers
9k views
How can I connect to a PostGIS database from ArcMap 9.3 and 10.0?
How can I connect to a PostGIS database from ArcMap 9.3 or 10.0?
Ideally, I would like to be able to perform spatially enabled queries and receive the results back (e.g. spatial and non-spatial ...
14
votes
1answer
2k 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 ...
10
votes
6answers
3k 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 ...
4
votes
2answers
1k views
How to add automate values to attribute field?
I have parcel, Buildings layers, without any information attribute table, and i want to replace "NULL" values with numbers form 1 to 2000, in "Parcel ID", or "Building ID" field
thank you.
2
votes
3answers
2k views
Problem with ArcToolbox tools
I work with ArcGIS 9.3. When I try to run any ArcToolbox tool I receive the message:
Window Internet Explorer (Title of the Window)
"One or more ActiveX controls could not be displayed because ...
6
votes
3answers
3k views
Arcmap: attach python script to a button?
In ArcMap 9.x how can I attach a python script to a button?
7
votes
2answers
252 views
How to determine projection parameters when customizing a projection
I am trying to customize an Albers and a Hotine Oblique Mercator (HOM) projection to minimuze distortion in the region I am analyzing. The region extends from about 51 to 62 degrees latitude, covering ...
6
votes
2answers
922 views
Cartographic techniques for symbolizing routing data
Some common problems with displaying routes created from street data, such as bus routes, include:
Routes may overlap themselves, such as when a route takes the same road in opposite directions
...
8
votes
2answers
919 views
Is there an automated/geoprocesing tool In ArcGIS to slice, clip, or cut polygons using polylines?
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 ...
3
votes
4answers
3k views
Change order of features in a shapefile
I have a shapefile and I want to change the order of the features.
Is that possible using ArcMap?
Thank you!
7
votes
7answers
7k 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 ...
14
votes
3answers
1k views
Producing building shadows?
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 ...
8
votes
2answers
384 views
Which data format typically displays fastest? (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 taught ...
6
votes
1answer
273 views
overlay county shapefiles for 2 different years
I have county-level shapefile for South Caroline in 1880 and one for 1940. I would like to overlay these two files so that they do the union and indicate the percentage of the land in 1880 that went ...
4
votes
6answers
5k views
Points to Polygon
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 way to ...
9
votes
4answers
891 views
comparing two DEMs
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 wanted to compare how the Digital ...
6
votes
2answers
971 views
Change from layout view to data view using python? (ArcMap 10)
Is there a way to change from layout view to data view using python? I would prefer to do it using arcpy.
5
votes
5answers
1k views
Volume of water in a basin with reference to incremental height of DAM
I have a DEM of my area.
I did watershed analysys with archydro.
I want to calculate "Volume of water in a basin with reference to incremental height of DAM"
Is there any method, tool to give output ...
3
votes
2answers
245 views
Listing features in the order they were selected
This is an ArcObjects-specific version of this question: Create Array From Selected Features Based on the Order in Which They Were Selected
Is there a way to get the selected FIDs of a feature layer, ...
3
votes
5answers
689 views
Measuring data load and redraw times in ArcMap
Rephrasing of the question slightly to address some issues.
Is there are standard way of measuring load times for data, specifically sybolised data, within ArcMap?
In particular, we're comparing ...
2
votes
1answer
2k views
How to change the Symbology of Multiple Layers at once?
Is there a way to change symbology for multiple layers in arcmap or arc catalog. I want to change the symbology of multiple layers at once.
1
vote
1answer
77 views
Raster as Attribute Field Error
I'm using Arc 10.1. I am creating a parcel inventory where I would like to have a photo of the property attached as an attribute and view-able with an HTML popup. I have a polygon feature class built ...
9
votes
2answers
1k 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 ...
8
votes
3answers
6k views
How to create a button in Arcmap 10 to run a Python program?
I have a script that I want to run within ArcMap when a button in a toolbar is clicked, and so far I have only been able to make the script into a script tool. I need it to run as a command, not as a ...
6
votes
2answers
561 views
How to create regular soil sampling grids?
I need to be able to set up a soil sampling grid at regular spacings of around 50 - 100 meters. Then export the points to a GPS so I can be guided to the points. I am new to GIS and have tried to do ...
3
votes
1answer
2k views
How to sort a feature class and then calculate a sequential ID field?
I am in ArcMap and I want to sort the records based on a field and then do a Calculate Field with an auto-incrementing value with the sort in-place. Any ideas?
It looks like I could get an update ...
2
votes
3answers
2k views
Add feature layer to display with in a script tool for desktop mapping 'App'
The point of this question is to find a way to programatically change the map extent based on user input. My method involves creating a Feature Layer & Selection, but if you have another ...
1
vote
0answers
109 views
How to overlay 3 different layers using ArcMap
I have to overlay 3 different layers called "Bacino Isonzo Perimetro", "Bacini Tributari Isonzo", and "Isonzo" in ArcMap. Layers'properties are shown below.
BACINO ISONZO PERIMETRO
Data Type: File ...
1
vote
3answers
831 views
Merging Two or More Layers
I am working with three clipped layers that are shown in the TOC. I created these layers from a large watershed shape-file. However, each clipped layer includes the layer before it and only expands on ...
1
vote
1answer
77 views
How do I keep user from selecting a different tool when my custom tool is selected?
I am using VB.Net to write an add-in. I'd like to keep the tool that I created selected even when the user attempts to select a different tool, and only deselect when my tool is clicked on again.
1
vote
4answers
291 views
Making multiple separate selections from attributes
I am using ArcGIS 10 with ArcEditor license. I have a 10 year composite of month-to-month temperature values for 17 weather stations. That makes 120 months. I have to select each and every month ...
1
vote
1answer
321 views
How to eliminate small features in a grid?
(Update) My final goal is to take some logged point data (1 point about every 20 ft or so there are over 15,000 points) and interpolate that point data. Then I would like to convert the interpolated ...
1
vote
1answer
624 views
Labeling classes for small roads on large extent maps in arcmap with sql statement
I have many small sub divisions that won't label nice, (lot of overlapping) unreadable. While using the bullet leader symbol. What would be the best statement that would place the labels in a clear ...
1
vote
1answer
410 views
How to create a pop-up box if a condition is true in a table? (ArcMap 10)
I'm creating a script that will grab layout data from a table for the current Building Number of the current building my map series is on. It works fine, but I need it to pop up a window if multiple ...
0
votes
2answers
337 views
Running Arcpy script from ArcObjects
the standard method requires to run arcpy script in commande line, i've struggled with it to run but without a result, i can import arcpy, set the workspace to the geodatabase path and describe the ...
14
votes
4answers
3k 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 ...
16
votes
6answers
9k views
How can I define projections for multiple shape files in ArcMap 10 at once?
I have over 100 shape files that don't have .prj file and thus when I bring them into ArcMap they show the coordinate system as unknown. I know all of the shape files coordinate system is GCS WGS ...
9
votes
6answers
4k views
How to copy attributes from one polygon layer to another?
I have a problem that I can't seem to get my head around. I have two polygon layers:
Polygon A - is a subset of polygon B with the same fields and has identical polygons to Polygon B
Polygon B - has ...
7
votes
1answer
385 views
In ESRI ArcMap, how do I refer to NaN or ±∞ (special floating point values) in definition queries?
I have by chance discovered how ESRI ArcMap displays special floating point values to the user.
+∞ (positive infinity) is displayed as 1.#INF
–∞ (negative infinity) would supposedly be displayed as ...
7
votes
4answers
3k views
How can I export raster data from Arcmap to an R *.grd file format?
I want to work with raster data in R, but I have problems exporting my raster dataset from ArcMap. By "export data"/GRID I get a file with an *.aux extension. What I need is *.grd.
Can anybody help ...
7
votes
4answers
8k views
Extract coordinates of polygon vertices in ArcMap 10?
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 ...
7
votes
4answers
8k views
How to find the distance of a point along a polyline?
We need to find the distance of a series of point along a given polyline.
We have a polyline dataset repsenting rivers in a catchment, broken up into river reaches (FID 1 through 35 for example).
We ...
5
votes
3answers
332 views
How stable is WPF in Arcmap?
I'm tempted to propose porting some windows forms based arcmap tools to WPF.
Before doing that though, I'd like to hear from others who have done something similar, and what sorts of issues were ...
4
votes
1answer
398 views
Extract coordinates for series of georeferenced files in ArcGIS 10?
I have a series of 1900 spatially continuous images that are georeferenced. Each image is a tif file paired with a tfw file.
These images are easily open and shown in ArcMap 10. However, I need a way ...
4
votes
2answers
895 views
How to create a checkbox parameter in a ArcGIS custom Python tool?
I am working on creating an ArcGIS tool from a Python script I am writing. I am wondering if it is possible to have a checkbox parameter. Basically what I want to do is have a parameter where the ...
3
votes
3answers
8k views
Calculate projected area of polygons with field calculator in ArcMap 10
I've got a polygon featurelayer in arcmap.
The coordinate system of the featurelayer's featureclass is web mercator.
The dataframe of the map uses an equal-area projected coordinate system.
I've ...
2
votes
2answers
792 views
How to repair topology of a shapefile?
I performed an object-based image analysis using ENVI EX, and each of the classified features were exported as a shapefile. I transferred those shapefiles into ArcMap 10, and tried to intersect them ...
13
votes
5answers
1k 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 ...
