ArcGIS refers to a family of GIS software from Esri which includes desktop (ArcReader, ArcMap, ArcCatalog), server applications (ArcGIS Server), mobile devices (ArcPad, ArcGIS Mobile) as well as online services (ArcGIS Online).
31
votes
5answers
855 views
When to use Model Builder over Python Scripting and vice versa?
I'm new in python scripting in ArcGIS but not Model Builder. I'd like to know what's the benefits of Python VS Model Builder. Why should we write script for GIS automation while we can use Model ...
1
vote
2answers
65 views
Identify parcels that have two types of land use
I have two polygon layers in a geodatabase. One layer is land parcels. The other layer is land use. I want to identify the six largest parcels that contain both "upland forests" and "wetlands" (i.e. ...
3
votes
2answers
65 views
Finding depression with contour lines
How can I find depression contour lines?
I already have find depressions via Fill-method, but now I try to detect them by using the contour lines. anyone have an idea ?
4
votes
3answers
93 views
Is there a simple tool to split polylines into two-part lines at the vertices in ArcGIS 10.1
Background: I'm using ESRI ArcGIS 10.1 SP1 at my office, Baltimore County Government, and we have a problem. There is a serious topology bug that I've mentioned in another question that is affecting ...
9
votes
2answers
2k views
QGIS vs ArcGIS (features)
I am learning to use QGIS and ArcGIS but I can not find the differences between them.
What are the differences between the capabilities of QGIS and ArcGIS?
2
votes
1answer
46 views
How do I select only those contours who heights are Integers?
I have a Contours Featureclass, with an interval of 0.2 Meters. I wish to select only those Contours, which are which are at 1 m Interval?
I have tried using the following syntax in the 'Select by ...
1
vote
1answer
24 views
Write unique ID(s) of polygons in layer A intersecting polygons in layer B to a field in layer B, in ArcMap?
I'm working in ArcGIS 10.1. Suppose that I have two polygon layers, A and B.
Polygons in layer B can have one of a few relationships to those in layer A:
They may be completely contained by ...
3
votes
2answers
85 views
Replace non-English characters in attribute tables
I have a few shapefiles where some of the attributes contain the non-English characters ÅÄÖ. Since some queries doesn't work with these characters (specifically ChangeDetector), I tried to change them ...
3
votes
1answer
97 views
What to set spatial reference to after projecting to GCS_WGS_1984
I have a shapefile containing some sort of vectors or polygonal chains. This file is in the GCS_CH1903 geographic coordinate system (it is not specified though... if I import it into ArcMap it says ...
1
vote
1answer
40 views
Assigning value to a field on a layer based on spatial query with another layer
I want to assign a value to a field of a polygon layer based on the value of a field on another polygon layer, using a spatial query.
My first polygon layer contains buildings and the second contains ...
2
votes
1answer
37 views
ECWs missing when exporting MXD to PDF with arcpy
I'm trying to export some MXD maps to PDF with arcpy (ArcGIS 10.1). Everything works fine and dandy except for ECW images, which don't appear in the PDF. However, when I execute the same code from the ...
3
votes
1answer
129 views
Create points at shortest euclidean distance to other points
So, I have a lot of points, and I need to site three new points so they will be at the shortest euclidean distance between all of the other points.
In other words, these three new points that I need ...
1
vote
1answer
50 views
Query and display a layer using arcgis script tool
I have database which contains point shapefiles and raster files for 3 species.
My aim is to develop a script tool that should have a search tab to enter the species name.
also, a check box to select ...
2
votes
2answers
70 views
Where can I find the freeware ST-Links PgMap?
I am trying to connect to a PostGIS database from ArcGIS Desktop 9.3.1
Some web-searching suggested that zigGIS would be useful. Unfortunately zigGIS has reached the end of life, and the author of ...
3
votes
2answers
61 views
Buffer of different radius - Intersect with raster
I have a polygon shape with buffers. However, the buffers are of different size from 4m radius to 15m. In total I have 7 different buffers.
I have a landcover raster and I would like to extract ...
6
votes
2answers
93 views
IDW spatial interpolation: appropriate projection?
I am wondering if anyone can clarify whether point data should be projected to an equidistant projection when using ArcGIS IDW spatial interpolation?
I am working on a dataset from Western North ...
3
votes
1answer
87 views
Geocoding Multiple Addresses using ArcGis JS API
I am new to using the ArcGIS JavaScript API. I am currently trying to develop an application but I am having troubles with it.
The application I am developing uses a .csv file with a bunch of ...
5
votes
4answers
999 views
explode overlapping polygons to new non-overlapping features
Given multiple polygons that overlap in multiple ways, I would like to export from this feature all polygons that don't overlap with others iteratively. The product would be a number of features with ...
4
votes
2answers
179 views
ArcGIS / Google Earth Alternatives
I currently have a python script that will take in data and output it as a KMZ file, which I then open in Google Earth on my desktop.
The data has two views; a 3D polygon tower (clustered data) and ...
8
votes
2answers
116 views
Arcobjects, mystery green lines in the Layout View produced during script execution
Could any of Arcobjects guru tell me, what are these green lines on my Page Layout and what to do, or not to do, so they do not appear? See image attached.
I do used Arcobjects from Python. My script ...
1
vote
1answer
134 views
Cannot input new data into FeatureDataForm
I am wanting to update the fields on my server using a FeatureDataForm. I have followed the documentation, but it still does not work. It also does not have the buttons in the form that say 'OK' and ...
3
votes
1answer
93 views
Field Name & Alias
Is there a way I can modify the Field Name or to make him keep the Alias when a table is exported?
Or is there a way to keep the Alias instead of the Field Name, when exporting for example to .dbf ?
...
5
votes
5answers
255 views
How to find the minimum extent of a given pixel value of a raster?
I am wondering if there is a way to find the minimum bounding extent for a raster with a particular value. I clipped a raster from a global image and the extent is set as the global extent with a lot ...
1
vote
1answer
29 views
Which marker did the user click on (ArcGIs JS API)?
I've got a simple map with a set of 10 markers on it. When they are clicked an infoWindow appears however I would like to instead display the data in the infoWindow in a table. How do I find out which ...
0
votes
1answer
70 views
Dissolving shapefile python script not working, syntax help please
I do not understand why this simple script won't work. I can get it to dissolve in model builder but not from a script that I run from inside the map document. My output results are 4 polygons, just ...
2
votes
3answers
88 views
Creating a where clause from user input/Python list
I am trying to perform a query based on values in a Python list. The where clause will then be used in an Update Cursor, so that the rows NOT equal to the values in the list will be deleted.
This is ...
3
votes
1answer
73 views
it is possible to undo and redo outside an edit session in Arcobjects?
I would like to know if it is possible to undo and redo changes outside of edit session, i'm working on an ArcSDE versioned 10.1 database?
if yes how i could do it in Arcobjects .NET .
Any help ...
0
votes
1answer
82 views
ArcGis 10 - Field Calulator - Python - Synthax Question
I want to calculate a field, this is my working example in VB:
"C:\Users\Admin\Desktop\Data\" & !Work! & "\1000_\" & !Data! & ".pdf"
I'm slowly changing all my scripts to Python, ...
-4
votes
1answer
64 views
find the nearest neighboring polygon
I have an assignment where I will find the nearest neighboring polygon. For example, if the polygon has one neighbor 2.3 and 4, I also find the neighbors of the polygon 2,3 and 4.
6
votes
1answer
833 views
Postgresql for Qgis and Arcgis - What to do/What not to do
Is it possible to use postgresql with QGIS and ArcGIS? One database for different clients. Is it anything that I have worry or any problems to use the DBMS from two different software? I know that I ...
3
votes
1answer
98 views
Create polygons in ArcMap 10.0 from lat/long data pulled from SQL Server 2008 database
Forgive me if this is very basic, as I'm new to GIS work (though I've been a programmer for 10 years) and so I'm not really sure how to approach this, but here goes...
Can I take a table with ...
9
votes
12answers
10k views
ArcMap 10: Labels not appearing
Not sure what the issue is, but I'm unable to get labels to display in Arcmap 10. The obvious things are accounted for (as far as I know). Labels are set in Properties, layers are checked to label in ...
2
votes
1answer
66 views
URL “ http:// <mygisServer>/ArcGIS/rest/service/GPTask/MapServer/jobs/<jobid>” not found in the ArcGIS Server?
I am Using ArcGIS Server 10.03 SP3. I created a geoprocessing service in the server which returns a result map service. I successfully created the gp service and map service with same name. I need to ...
0
votes
1answer
170 views
How to import ArcGIS 10.1 File geodatabse to MS SQL Server 2012
Hello I´d like to import my File Geodatabase from ArcGIS 10.1 into MS SQL Server 2012.
I´ve never do it before, so I expect to do the import same way as import data from excel table.
Problem is ...
6
votes
1answer
107 views
When to use multiple geodatabases?
I'm working on a project involving one database , but the customer's needs have evolved, so he needs to manage multiple projects. I tried to work with adding an id for each project, which gave me more ...
2
votes
1answer
63 views
How to make a new polygon/feature from a point which is NOT a centroid? ArcGIS
I've spent all morning searching help sites and digging through the FAQs and worksheets but have failed miserably.
I am an ArcGIS novice so I hope this isnt too much of a "newbie" question but I'm ...
2
votes
1answer
77 views
Differential Equations in ArcMap or ERDAS Imagine
I would like to know if it's possible to solve differential equations and run them directly in either ArcMap or ERDAS Imagine, similar to the raster calculator in ArcMap.
Thanks
J
4
votes
1answer
36 views
How far is a station from the outlets in a watershed
I have a gauging station point with elevation. Also have a watershed generated for the same area. I just want to know how to calculate the distance from the station to the outlet(point)
The green ...
4
votes
5answers
110 views
Intersection of two lines tool
Is there any way to make intersection of two lines tool with extending lines option, so the result would be a point. the hardest part is when the lines have to be extended to intersect.
the tool will ...
1
vote
1answer
50 views
Extracting Data from the NLCD dataset.
I am working with U.S. National Landcover Dataset (NLCD) to classify habitat type at more than 150 sites across the northeast U.S. The dataset is very large (15GB) so I cannot upload it here, but it ...
1
vote
1answer
66 views
How do I change the delimiter in the attribute table
I have imported a .kml file into QGIS, and the data is all shoved together into a single field like this:
Fine, it's pipe delimited - easy to change the delimiter like in LibreOffice calc imports I ...
1
vote
1answer
53 views
Force ArcGIS iOS to use GPS data from External GPS device
I created an app that will display the map and the location of the external GPS device. The scenario is using a wifly module to broadcast the GPS data of the GPS receiver in wifi. The app is now ...
2
votes
1answer
271 views
Data Driven Pages and exporting PDF using Python
I am able to zoom into map_index shapefile rows for a group of mxd documents in layoutview and export zoomed record as a PDF document at the same time.
I tried to combine below codes to make the ...
5
votes
2answers
68 views
How to enumerate join values with ArcGIS?
I have two shape files (e.g. postal code areas and cities) which I want to join based on an id that both shape files have in common (the id would be the city name in this example). Joining the two ...
0
votes
1answer
222 views
Python 3 module to read ArcGIS .dbf files
I would like to know whether there are Python 3.x-compatible (preferably Python 3.3) modules to read the kind of .dbf files produced by ArcGIS.
All the modules I found were only compatible with ...
0
votes
2answers
50 views
Export Raster with classification colors in ArcMap
I have a single band raster, but i like to export it with the same colors as in Arcmap.
Any help please.
1
vote
2answers
455 views
FeatureLayer Scale Settings in ArcGIS Silverlight API
Is there a way to translating between resolution and scale in the ArcGIS Silverlight API?
I am dynamically adding a Feature Layer to my map which should have a Min Scale value of 10,000. The feature ...
5
votes
3answers
647 views
Using arcpy what is the most efficient way of projecting a selection from a large data set?
I have a large data set X(x1-xn) from which I must select consecutively the attributes A(a1-an) from X.fieldsSRC or X.fieldDST and project the selections.
I have a functioning arcpy script that does ...
2
votes
1answer
105 views
How to make smaller ArcMap PDF for use in InDesign?
I frequently build reports that incorporate ArcMap maps. The maps are all exported in PDF format.
I am finding that there are so many line segments in the map that importing them at times is almost ...
4
votes
3answers
151 views
Finding outliers with wrong Z values in LIDAR data
I have more than 2000 XYZ .txt files and I have to do QC: let's say I have file, which I converted to multipoint (or even singlepart feature). I have mean Z value for a file, but ... if most of the ...
