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Thursday, January 31, 2013

New: ArcGIS 10 tutorials


This page provides a set of various ArcGIS tutorials used to perform a number of common tasks in ArcGIS. Find the tutorial that you would like to work through by clicking the links below. These are Esri tutorials
To work through the ArcGIS Desktop tutorials, you need to install the tutorial data from the ArcGIS Desktop Tutorial Data setup, which is part of the ArcGIS Desktop installation download or media. If the tutorial data has been installed on your system, look for it in C:\arcgis\ArcTutor (the default installation location). In many cases, you will need write access to that location to perform the tutorial.
The ArcGIS Server Installation does not include tutorial data. Most of the ArcGIS Server tutorials are written in a generic way so that you can follow the steps using your own datasets.
These tutorials are published by ESRI:

Database servers:

This tutorial shows you how to use ArcGIS Desktop to use database servers (instances of SQL Server Express) and the geodatabases you create on the database servers to store, access, and edit GIS data. An ArcEditor or ArcInfo license is required to complete the tutorial.
Editing:
In this tutorial, you'll learn the basics of the editing environment in ArcMap, including creating new features on the map; updating attribute values; utilizing snapping while editing, creating, and editing annotation; using topology to maintain spatial integrity; and performing spatial adjustments on your data.

Geodatabases
In this tutorial, you'll learn to build geodatabases that include relationship classes, subtypes, attribute domains, topology, geometric networks, and feature-linked annotation. An ArcEditor or ArcInfo license is required to complete the tutorial.




Tuesday, January 22, 2013

ESRI Geodatabase Downgrade Tool

Most of you must have at least few 9.x (9.2, 9.3, 9.3.1 hopefully no 9.1) while your main production ESRI geodatabase is in 10.x you must face it frustrating that your 10 data won't work on 9.x machines.

Here is a simple tool to use to "Downgrade" any geodatabase to a 9.x version.


Open ArcCatalog

Navigate to the tool.


Double click on Downgrade GDB tool.



Select your 10 gdb


Enter the information
The output will be in the same folder


The result will be the same as your selected gdb plus a 9x suffix.

Map suite GIS software: alternative to ESRI ArcGIS?

Map Suite is a collection of professional-grade GIS software controls and components for the Microsoft .NET Framework that enables you to create your own GIS applications. Much like ESRI's ArcGIS .NET ADF, Map Suite is an API that lets you weave interactive maps and spatial analysis into your own applications. But rather than overload you with complex tools that require weeks of learning, Map Suite's easy-to-use API makes GIS applications easier to build than ever. Even better, there are no royalty costs associated with distribution, making Map Suite a truly affordable GIS solution.


It's Accessible.
Map Suite is backed up by an easy-to-use API that's been designed with even non-GIS developers in mind. Map Suite gives you all the tools you need to build the map you want using Visual Studio. You won't spend days or weeks trying to get a handle on all the features like you might with ESRI's ArcGIS software systems.
It's Easy to Get Started.
Packed with an array of powerful features like charting and graphing, thematic rendering, custom tooltips and markers and much more, Map Suite comes with over 125 sample applications to show you how to put it all together. Try a free evaluation and see for yourself how quickly you can add GIS, mapping and geospatial analysis to your .NET applications, using the programming language that you're already familiar with.
More Great Map Suite Features:
  • Works with OpenStreetMap, Google Maps™ and Bing™ Maps
  • Royalty-free distribution of your finished projects
  • Advanced GIS functionality rivals that of ESRI ArcGIS
  • Native to the Microsoft .NET Framework
  • Easy-to-use API with lots of sample code
  • Skilled professional services available to build your project for you
  • Great tech support & active discussion forums
Source gis.thinkgeo.com

try it here http://websamples.thinkgeo.com/

Monday, January 21, 2013

Image classification methods in the remote sensing


Digital image classification assigns pixels to classes. Each pixel is treated as a set of values in several spectral bands, derived from the brightness of the same area on the earth's surface. By comparing pixels to one another, and to pixels of known identity, it is possible to assemble groups of similar pixels into classes that are associated with the informational categories of interest to clients. Because these classes form regions on an image, after classification, the digital image is presented as a mosaic of uniform parcels, each identified by a color or symbol. These classes are, in theory, homogeneous-- pixels within classes are spectrally more similar to one another than they are to pixels in other classes. In practice, of course, each class will display some variation, because category exhibits natural variation. Image classification forms one of the most important tools for examination of digital images--sometimes to produce a final product, other times as one of several analytical procedures applied to derive information from an image.

Image classification requires the analyst to matchinformational classes to spectral classesInformational classes are the categories of interest to the ultimate users of the data. Informational classes are (for example) the different kinds of forest, or the different kinds of land use that convey information to planners, managers, and scientists who will use information derived from remotely sensed data. These classes convey the information that we wish to derive from the data--they are the object of our analysis. Unfortunately, remotely sensed images do not directly convey informational classes-- we can derive them only indirectly, using the brightnesses that compose each image. For example, the image cannot directly show geological units, but rather only the differences in topography, vegetation, soil color, shadow, and other factors that lead the analyst to conclude that certain geological conditions exist in specific areas.

In contrast, Spectral classes are groups of pixels that are uniform with respect to brightnesses in their several spectral channels. The analyst defines spectral classes within remotely sensed data; then must define links between spectral classes on the image and informational classes that are of interest to the client. In this manner, image classification proceeds by matching spectral categories to informational categories. If the match can be made with confidence, then the information is likely to be reliable. If spectral and informational categories do not correspond, then the image is unlikely to be a useful source for that particular application.

Informational classes are typically composed of numerous spectral subclasses--spectrally distinct groups of pixels that together may be assembled to form an informational class. In digital classification, we must often treat spectral subclasses as distinct units during classification, but then display several spectral classes under a single symbol for the final image or map to be used by planners or administrators (who are, after all, interested only in the informational categories, not the intermediate steps required to generate them).

Overview of Process of Supervised Image Classification
  1. select prospective training areas (training data polygons)
  2. evaluate the training areas on the basis of
    • visible features
    • normalilty
    • separability
    • partitioning
  3. make decisions on which training areas to use
  4. classify the scene
  5. evaluate the accuracy using an error (contingency) matrix
Unsupervised classification can be defined as the identification of natural groups, or structures, within multispectral data. The notion of the existence of natural, inherent groupings of spectral values within a scene may not be intuitively obvious, but it can be demonstrated that remotely sensed images are usually composed of spectral classes that internally are reasonably uniform in respect to brightnesses in several spectral channels. Unsupervised classification is the definition, identification, labeling, and mapping of these natural classes.
read more: 

download ArcGIS for AutoCAD


Free Download

For AutoCAD 2010, 2011, and 2012 Systems*

ArcGIS for AutoCAD 300 is compatible with ArcGIS for Server for Java and the Microsoft .NET framework. ArcGIS for AutoCAD is also compatible with ArcGIS Online.

proceed to the intended program's page

Read more

Sunday, January 20, 2013

What is ArcGIS Server on Amazon Web Services?


ArcGIS Server on Amazon Web Services allows you to deploy ArcGIS Server on the Amazon Elastic Compute Cloud (EC2). ArcGIS Server runs on Amazon's hardware and is administered through web services.
Advantages of deploying your server on Amazon EC2 include the following:
  • No installation required—You don't have to install ArcGIS Server yourself. Instead, you use a downloadable utility, ArcGIS Server Cloud Builder on Amazon Web Services, to create your ArcGIS Server site on Amazon EC2. Once you create your site, you can immediately connect to it and begin publishing services from ArcMap.
  • Scalable on demand—You can configure your site so that additional GIS servers are added in response to certain triggers, such as CPU usage. New servers can be created in a matter of minutes, allowing your site to gracefully respond to abrupt spikes in traffic. When you no longer need the instances, you can destroy them and incur no further charges for them.
  • No hardware infrastructure to maintain—Deploying ArcGIS Server on Amazon Web Services requires no special hardware; you just have to be able to connect to the Internet. After creating your site, you can gain fine-grained management of your server through the AWS Management Console, a web application provided by Amazon. You can log in to your server through Windows Remote Desktop Connection to fine-tune your data, services, and applications.
    Deploying your server in a cloud environment allows you to use as many or as few computing resources as necessary without committing to a long-term purchase of hardware or other IT infrastructure.

About this help

This help system focuses on how to deploy ArcGIS Server and use enterprise geodatabases on Amazon EC2. It also includes special topics about maintaining and scaling your deployment on EC2.
If you need general information about ArcGIS Server or enterprise geodatabases, you should visit the ArcGIS Help. The ArcGIS Help describes how to publish services, configure security users and roles, create web applications, build geodatabases, and so on.
Links to the ArcGIS Help are provided throughout this help system where appropriate.

What is Cloud Computing


It's virtual

Imagine racks of servers, humming along in a data center. Together, these servers become a massive pool of resources. Divide this "pool" into multiple virtual servers, and you create a "cloud."
It can be secure
For the utmost security, create a private cloud on dedicated hardware. But always remember to put appropriate security measures in place, no matter which cloud you choose.


It's flexible and scalable

Since virtual servers aren't physical, they are super flexible, giving you what you need at the moment. Spin up a server in minutes, and take it down just as easily.
It can be affordable
You'll get the greatest cost savings in the public cloud, where your virtual servers run on physical servers that you share with other customers.


It's open (or closed)

In the open cloud, you can easily move your cloud around—without being locked into one provider or a closed, proprietary technology.
It can be secure and affordable
A hybrid cloud gives you the benefits of both public and private clouds. For example, you can put public-facing components in a public cloud, while storing customer-sensitive data in a private cloud.

Why Use Cloud GIS?

When you run GIS software and use GIS services in the cloud, you, or more likely your organization and your customers, may realize many of the same benefits other software and services users discover when they start their work in cloud. 

Common benefits include

No more software updates

In the cloud, the end-user is most likely using the latest, greatest version of the software or service. They don’t have to worry about installing or configuring software updates and can take advantage of new features right away, as they become available.

Convenient access to services

The organization is able to make its online services available to customers 24/7 (always on). This means that the business of the organization continues beyond the regular work day - letting customers use the software and services when they need it, at any time, from anywhere in the world.

Pay only for what you use

Using cloud services means that both the customer and the organization can take advantage of more flexible business models, which make it easier to budget for services rendered and, in the long term, may lower the overall cost of ownership. The cloud also makes computing extremely scalable, allowing you to quickly increase capacity during peaks of high demand and then scale back down when demand returns to normal levels.
Cloud GIS includes all of these benefits, in addition to making it easier to test and deploy GIS applications, which can improve your organization’s responsiveness and competitiveness. You may also find that Cloud GIS provides you with a more collaborative environment, particularly for your mobile workers and customers or if you have multiple offices located in different cities around the world.

Public and Private Clouds

Typically, cloud computing platforms can be public or private. In the public cloud, the infrastructure and applications are owned by the cloud vendor and essentially leased to the cloud consumer. A private cloud operates behind an organization’s firewall and is maintained within the parameters of the host organization, although the infrastructure and applications can still be owned by a cloud provider. Private clouds are becoming increasingly more popular.
 Many believe that the “sweet spot” for cost optimization in the cloud relies on a delicate balance of public and private clouds – often referred to as a hybrid solution. For cloud GIS users, this means taking advantage of GIS software and services within on-demand infrastructures, taking full advantage of both on-premise and off-premise, depending on the business needs or restrictions of the organization.

Topics in Cloud GIS

Imagine that all the GIS tools, imagery, basemaps, and databases you need to do your work are organized for you somewhere out there on the web. You can access those resources at any time, from your desk at work, from home, while you’re traveling; your data storage capacity increases automatically as you need it; and you can share your work instantly with colleagues or customers across the globe.

This is idea behind Cloud GIS – seamless access to GIS capabilities from anywhere.

What Is Cloud GIS?

Cloud GIS is the combination of running GIS software and services on cloud infrastructure and accessing GIS capabilities using the web.

Cloud computing offers an alternative to traditional methods of delivering and consuming GIS software and services to your customers.
Cloud Infrastructure
Instead of running GIS on your own compute systems and operations, with Cloud GIS, your software and services reside on infrastructure – commonly (but not always) maintained off premises by a third party vendor – and made available through web technologies.

For a more detailed definition of cloud computing, see The National Institute of Standards and Technology (NIST)

How to Connect to ArcGIS Server Map Service


In this tutorial, you will learn how to connect to a Map Service using ArcMap.

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Step 1. Open ArcMap and click the Add Data button.
Step 2. Click on GIS Servers
Step 3. Click on Add ArcGIS Server
Step 4. Select Use GIS Services
Step 5. Type http://data1.commons.psu.edu/arcgis/services into the Server URL: box - leave the rest of the default settings.
Step 6. Your new ArcGIS Server has been added. Double click server name to view the available map services on this server.
Step 7. Double Click the pasda folder....
Step 8. Choose which service you wish to add....
Step 9. Your service has been added to ArcMAP
NOTE:
Why am I asked for a password when I try to add an ArcIMS Internet MapService to ArcMap?
All of the data and services provided by PASDA are free and open to the public; nothing requires a password. If your computer is on a network that includes a Proxy Server, you may be prompted for a password due to your network settings. You should check with your network administrator to confirm whether you have a proxy or not. If you do have a Proxy Server the easiest way to resolve this issue is to add your Proxy Server information to ArcCatalog. In ArcCatalog select Tools - Options - Proxy Server and enter the information supplied by your network administrator. Once that is done you should not be prompted for a password when connecting to PASDA services. If you are using ArcGIS 9.2, you can provide the Proxy Server information in ArcCatalog by selecting Tools - Options - Connections. You may also need to make changes to your Internet Settings in the Windows Control Panel. Consult with your network administrator to help with your particular configuration.
source (pasda.psu.edu)

Create a command by inheriting from BaseCommand

This walkthrough takes you through the steps to create a simple command that zooms the extent of the selected layer. This command is written by inheriting from the ESRI BaseCommand class available in the ADF assembly. It includes the following steps:

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Saturday, January 19, 2013

Download ESRI ArcGIS tools and Extensions



Batch Geocode 
http://www.batchgeocode.com/ 
Locate multiple addresses internationally - North America & Europe - calculate distances - make your own mashup map - instantly. 

Brava! DWG Viewer 
http://www.bravaviewer.com/viewers.htm 
A free tool for viewing and measuring DWG, DXF, and DWF files. 

Corpscon
http://crunch.tec.army.mil/software/corpscon/corpscon.html 
"An MS-Windows-based program which allows the user to convert coordinates between Geographic, State Plane, Universal Transverse Mercator (UTM) and US National Grid systems on the North American Datum of 1927 (NAD 27), the North American Datum of 1983 (NAD 83) and High Accuracy Reference Networks (HARNs)." 



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DS Map Book 
ESRI Developer Network link 
"This Developer Sample code is designed to allow for the creation of Map Books. A page is created in the book based on each feature in a grid/index layer specified by the user. Index layers must contain polygon features with a string field containing the name of each tile/page. The features in the index layer do not have to be of any particular size or shape, nor do they need to be continuous or non-overlapping. Several commands are included for generating index layers based on a uniform grid or based on selected, continuous line features" 

Edit Tools 
http://www.ian-ko.com/ 
A reference for tools (ET GeoWizard, free calculators, etc.) and resources. 

Hawth's Tools 
http://www.spatialecology.com/htools/tooldesc.php 
A ton of custom tools for ArcGIS, including: analysis, raster, sampling, tables, editing, and more! 

SmartExporter
http://arcscripts.esri.com/details.asp?dbid=14823
Export your layout/map to DXF with this export filter created for ArcMap 9.1/9.2! 

TerraServer Download Tool 
http://arcscripts.esri.com/details.asp?dbid=14816 
This is a valuable tool! Once installed, it makes a new toolbar available in ArcMap. With the toolbar open, click the TerraServer button and it will download imagery hosted by TerraServer (http://terraserver.microsoft.com) directly into ArcMap. This is a great way to acquire aerial imagery for an area, or simply get a better idea of where your data is located. 

XTools Pro 
http://www.xtoolspro.com/ 
A great extension for geoprocessing. With this you can do some things that would otherwise only be available at the ArcEditor or ArcInfo license level. It is priced at less than $200. Check to see if your company already has it available for you to use.



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EXTENSIONS

Add more capabilities to ArcGIS for Desktop with extensions. These specialized tools allow you to perform more sophisticated tasks such as raster geoprocessing and 3D analysis.
* Requires ArcGIS for Desktop Standard or Advanced
** Starting with the release of ArcGIS 10.1, this extension is included with ArcGIS for Desktop at no extra cost.
*** Requires ArcGIS for Desktop Advanced
Note: Unless noted, extensions can be used with ArcGIS for Desktop Basic, Standard, and Advanced.
ArcGIS 3D AnalystAnalyze your data in a realistic perspective.
ArcGIS Geostatistical AnalystUse advanced statistical tools to investigate your data.
ArcGIS Network AnalystPerform sophisticated routing, closest facility, and service area analysis.
ArcGIS SchematicsRepresent and understand your networks to shorten decision cycles.
ArcGIS Spatial AnalystDerive answers from your data using advanced spatial analysis.
ArcGIS Tracking AnalystReveal and analyze time-based patterns and trends in your data.
Business Analyst Online Reports Add-InDirectly access demographic reports and data from Business Analyst Online (BAO) for trade areas and sites created in the desktop.

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Productivity
Key Benefits
ArcGIS Data InteroperabilityEliminate barriers to data use and distribution.
ArcGIS Data ReviewerAutomate, simplify, and improve data quality control management.
ArcGIS PublisherFreely share your maps and data with a wide range of users.
ArcGIS Workflow Manager*Better manage GIS tasks and resources.
ArcScan for ArcGIS**Increase efficiency and speed up raster-to-vector data conversion time.
Maplex for ArcGIS**Create maps that communicate more clearly with automatically positioned text and labels.
Solution BasedKey Benefits
ArcGIS Defense Solutions
(includes ArcGIS Military Analyst, Grid Manager, and MOLE)
Create workflows, processes, and symbology to support defense and intelligence planning.
ArcGIS for Aviation*Use the full power of GIS to efficiently manage aeronautical and airports information.
ArcGIS for Maritime*Gain value from bathymetry and leverage nautical data beyond charting.
Esri Defense Mapping***Efficiently manage defense specification-compliant products.
Esri Production Mapping*Standardize and optimize your GIS production.
Esri Roads and Highways*Easily manage, visualize, and analyze transportation networks.

No-Cost Add-ons

These free add-ons provide special tools for specific tasks. You can download them directly to your desktop and begin using them right away.
No-Cost Add-onsKey Benefits
ArcGIS Editor for OpenStreetMap
(download)
Contribute to the OpenStreetMap project by adding, editing, and deleting data within the familiar ArcGIS 10 editing environment.
ArcSketch
(download)
Quickly create features in ArcGIS with easy-to-use sketch tools.
Districting for ArcGIS
(download)
Create defined groupings of geographic data, such as census tracts, ZIP Codes, and precincts, by creating a districting plan.
Esri S-57 Viewer
(download)
Visualize S-57 data in compliance with S-52 standards and specifications for chart content and display aspects.
Free Geoportal Add-ons
(download)
Catalog geospatial resources within an enterprise and provide quick access to those resources regardless of location or type.
OLAP for ArcGIS
(download)
Create, view, use, and manage connections to OLAP databases in ArcGIS for Desktop.
U.S. National Grid Tools for ArcGIS
(download)
Support disaster relief and search and rescue with a coordinate system that can be standardized across agencies.
WMC Client
(download)
Open Web Map Context (WMC) files directly in ArcMap.
Read more about ArcGIS for Desktop extensions [PDF].
Source http://www.esri.com

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