7
votes
1answer
654 views

(Smooth) Isoline Extraction from TIN - Algorithms

Can anyone point me to a clear document or algorithm for extracting smooth isolines from a Triangular Irregular Network? I've seen some examples using the jagged linear methods, but can't seem to ...
1
vote
3answers
214 views

I am trying to find PDF documentation for Maplex for ArcGIS

Does anyone know where to find the PDF documentation for Maplex for ArcGIS 9.3 ? There was a website from ESRI but it was broken link ? I need to review it because I am working on impaired streams ...
3
votes
2answers
3k views

How to convert a bing maps quadkey to mercator coordinates

How do you convert a bing maps quad key, such as "03200320023" to coordinates in mercator virtual earth (epsg 3857) coordinate system? I've got an algorithm to convert to coordinates in latitude ...
12
votes
9answers
1k views

How does Esri technical support work i.e. what kind of questions does it answer?

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 ...
3
votes
3answers
2k views

How to avoid dbo.arcsde LOCK issue while exporting to ArcSDE

I had a spatial db connection open in arcmap. While exporting to SDE with a console app I get an error in the console: Lock request conflicts with an established lock [DBO]. Does this just mean ...
16
votes
10answers
5k views

Getting started with Arcobjects

What is the best route or place to get started with arcobjects if one is not a developer and not aiming to become a developer? I've been using gis professionally for a long time, almost two decades, ...
2
votes
1answer
436 views

How can I get SOESupport to handle Polymorphism?

I've got some business objects below that I can serialize and deserialize successfully with Json.NET. I don't see a simple way to do this with Esri's SOESupport however. I'm happy with Json.NET, but ...
2
votes
1answer
991 views

geoserver wfs insert error

I keep getting an insert error from geoserver when trying to save a point, poly etc etc to my postgis table. any ideas, my code is below var Projection = new OpenLayers.Projection("EPSG:4326"); ...
2
votes
1answer
172 views

Does arcpy.AggregatePoints_cartography create multiple polygons?

Does this function allow you to put in an array of points, which may, or may not, be representative of many polygons, and create many polygons from it, or just the one, linked?
4
votes
1answer
1k views

Get mouse position in GeoExt

The title says it all. I'm using GeoExt as part of OpenGeo Suite. I would like to display the current mouse coordinates. Update: I was getting confused as to what parts of the code are GeoExt and ...
3
votes
1answer
2k views

Import list of addresses into MapPoint for route planning

I have a list of 40+ points for each work day in a month. I need to somehow calculate the distance between each of those points for each day. I have a list of addresses in a database, house number, ...
11
votes
6answers
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 ...
3
votes
2answers
2k views

ArcGIS 10 - How can you open geodatabase files using a Browse Dialog Command (VB.NET/C#)?

I am currently using the following method to open raster files from a form: Public Function BrowseRaster(ByVal sTitle As String, ByRef sFolder As String, ByRef sName As String) As Boolean Dim ...
0
votes
1answer
1k views

How to safely replace ArcGIS SDE feature classes using transactions

I am using C#, ArcGIS Server 10, MS-SQL Server 2008, and I want to replace an ArcGIS SDE feature class inside of a transaction. After the deletion of the feature class, I have to create a new one with ...
3
votes
2answers
6k views

How do you set OFFSETA for a Viewshed in ArcGIS10?

How do I calculate height when attempting to do a viewshed analysis in ArcGIS10? I am able to create a viewshed analysis from a poly point file, however I need to calculate for the 80ft to 100ft tower ...
19
votes
3answers
6k views

How to store lines and polygons in JSON documents?

Looking at the increasing NoSQL movement and considering that databases like MongoDB offers a new perspective in flexible data storage for GIS. What is the best way to store lines and polygons in ...
3
votes
2answers
2k views

Java Contour Algorithm

Does anyone know if there is an open source project in Java that will take a set of (x, y, z) points and create a contour map for Google Maps/Earth? There does not seem to be a good contouring ...
3
votes
3answers
1k views

Can Civil 3D reproject shapefiles?

Sorry to ask, but I just don't have time for help menus this week. That said, does anyone know if CAD is capable of re-projecting shapefiles? I find myself in a situation whereby I may have to use ...
7
votes
5answers
9k views

OpenLayers: ALL image layers are out of place on google maps v3 and OSM base layers

Summary: I have 2 different image layers that looked fine with my old mapstraction/google maps based system. Using the same coordinates as bounds in openlayers results in a shift to the north by like ...
15
votes
2answers
627 views

GIS/Geospatial Podcast

I wanted to know if there are any free available to download informative GIS/Geospatial audio or video podcast other than ESRI Instructional Series Podcasts and Speaker Series Podcasts in the market. ...
7
votes
4answers
4k views

Site to download al USGS Topo Maps in bulk

I am trying to create seamless topomap WMS or TMS layer that covers the entire US (not interested in geo-pdfs). To do that, I need either the rasters (geo-tiffs, etc) or preferably vectors (whatever ...
2
votes
1answer
289 views

arcgis10: export eventlayer (from querylayer) to ArcSDE

I am not using arcmap but I am creating a arcgis desktop console app. I am pulling an external SQL table in as a querylayer. This table has lat & long so I created an eventlayer (or ...
3
votes
3answers
376 views

What is Trinity High Water?

This question may be off topic, in which case I apologise. I have a problem where water level is important and I have two water levels defined, Trinity High Water and Mean High Water springs (MHWS). ...
9
votes
4answers
3k views

Trying to find a .NET GeoJSON library

I'm trying to find a .NET GeoJSON library which I can use to export my SqlServer2008 spatial boundaries (in binary format -> eg. STAsBinary()) from my .NET code to my HTML frontend to display on a ...
3
votes
1answer
831 views

Help with joining a large dbf file to shape file

My overall objective is to create a timeline animation depicting when a person is working in a particular region. The .dbf table consists of over 6000 record entries of shift data, including date ...
2
votes
1answer
558 views

saving vectors in PostGis

I need to save my vectors layer back to postgis, which if i read correctly i can do using geoserver however im confused. All the examples ask you to import a shapefile. I dont have a shapefile. ...
1
vote
0answers
331 views

multipatch features are not visible in 3D ArcGlobe

I have created some 3D features in ROCKWORKS software, which represents lithology data. Then I converted it to 3D shapefile, and then I added it to ArcGlobe as well as ArcScene. It is clearly visible ...
0
votes
1answer
321 views

GeoServer Web Map Service

I have added all data in PostgreSQL with the help of POSTGIS. I made a store in Geoserver, but after adding data when I click on the Open Layer option it does not open, and a file downloaded is shown ...
4
votes
3answers
3k views

How to properly utilize DWITHIN Spatial Filter in OpenLayers

Given the following code: var points = []; points.push(new OpenLayers.Geometry.Point(-110, 38)); points.push(new OpenLayers.Geometry.Point(-108, 40)); var lineString = ...
1
vote
2answers
473 views

ArcGIS COM API Error

i am using the arcGIS api to make a plugin for arcFM, when i try to run this code Type t = Type.GetTypeFromProgID("esriFramework.AppRef"); System.Object obj = ...
2
votes
2answers
6k views

Setting units in CAD

I'm really stuck today!! I need my "units" set in CAD to reflect a "compass". I need the bearings I enter to reflect a complete circle with North being 0/360d, East being 90d, South being 180d and ...
21
votes
6answers
819 views

Open access repository of general GIS spatial data?

As a newcomer to using GIS for research, I am wondering if there are online repositories for spatial data, similar to package repositories for Linux distributions. For instance, I would be able to ...
3
votes
4answers
2k views

Help with QueryFilter

I have a query filter which works if pass a new instance of QueryFilterClass without setting any properties. But it breaks if I set the WhereClause. I get an error 0x80040358 ...
3
votes
2answers
181 views

Data storage shared with co-worker [closed]

I would like to ask anyone out there who knows of a good free website that allows me to upload my gis data files to co-worker. Each project I am working on are quite large and would need to upload 1 ...
6
votes
3answers
301 views

Issue with webADF 931 application migrated to 10 environment within IE8

I am currently in process of migrating a webADF 931 application to Arc 10 environment and testing it within IE8. I am having this issue, the map when launched only covers partial area. I have tried ...
4
votes
1answer
134 views

Determine when ArcGIS feature was created

In ArcCatalog I'm looking at a feature's table fields. The DATECREATED column is empty for all features. How can one determine when a specific feature was created?
7
votes
4answers
397 views

Examples of web based Overweight/Oversize load permit routing on County Roads

Does anyone know of any US counties that have set up a web based overweight/oversize load permit routing system, preferably one that leverages GIS? I know many state DOT's are doing this, but I don't ...
6
votes
1answer
796 views

In QGIS, how do I remove a band from a raster?

When I process a raster in QGIS it creates a second band. It appears that band has no useful data. I like to use the Raster Colours Tool and it will not accept a raster with anything more than on ...
11
votes
2answers
570 views

How sensitive is Landsat to atmospheric correction?

How important is it to correct Landsat for atmosphere, haze and convert DN to reflectance? What impact does it have on the results, say for many of the vegetation indices?
11
votes
3answers
6k views

How to split a line into a set of equidistant points

Used to rely on XTools for this, but in my current environment, I don't have access to it. I'm trying to do this in ArcMap10. The goal is to break a line representation of a stream into a set of ...
8
votes
3answers
10k views

Generally accepted root mean square (RMS) error for rectifying topographic maps

This is a generic inquiry on the common practice/standard for determining the acceptable values of RMS when georeferencing topographic maps. Is there an absolute value? Some literature suggests that ...
11
votes
9answers
2k views

What is a good Javascript web API (preferably open) for building web maps that require little/no maintenance?

I have recently volunteered to make a web map for a local non-profit. The map will be pretty basic. It needs to display Lane county, Oregon split into multiple districts, with a "central office" ...
1
vote
1answer
3k views

Feature Layer with ONDEMAND mode

I can't understand how to display all features from the feature layer. In the code bellow I specified 2 features in the layer and set in feature layer's mode to esri.layers.FeatureLayer.MODE_SNAPSHOT. ...
8
votes
1answer
999 views

Getting units from ISpatialReference of ArcObjects?

How do I get the units (meter/feet) from an ISpatialReference object in ArcObjects?
3
votes
2answers
1k views

Change output file type in QGIS georeferencer?

I have successfully georeferenced a raster file via the Georeferencer plugin (Georeferencer GDAL Version 3.1.9) in QGIS 1.7.0. However, I noticed that the output georeferenced raster file is in TIFF ...
19
votes
4answers
7k views

Maximum number of point features in an OpenLayers vector layer

In your experience, how many point features can be added to an OpenLayers vector layer (new OpenLayers.Layer.Vector("Point Layer")) before it goes unusably slow? My use case is to display points from ...
3
votes
3answers
397 views

Learning about ArcMap's Tracking Analyst tool

I was examining the ArcMap toolboxes to learn more about their functions and found the Tracking Analyst tool. Does anybody have examples of how can this function is used and when best to use it?
4
votes
1answer
670 views

Error using ST_AddPoint for adding a new point to a polyline in PostGIS

I have two PostGIS tables, one where I store points, named "nodes" and another with where I store multilinestrings, named "lines". I'm trying to append a new vertex to a line using one of the nodes ...
2
votes
1answer
4k views

Highway Mile Markers to Lat and Lon?

Is there a way to search for highway mile markers on an existing mapping system and find the lat and lon?
2
votes
1answer
673 views

Converting CIB data to Google Tiles with GDAL

I'm trying to convert CIB map data into Google compatible Tiles through the following process (in Linux, GDAL compiled from source): gdalbuildvrt data.vrt A.TOC gdal_translate -of VRT -expand rgba ...

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