We all know the power of using feature services with ArcGIS.com to share our data and maps. These maps become even more powerful when the content automatically updates. GeoRSS feeds allow you to quickly pull content into your map. Well, … Continue reading
At the developer summit this past spring we debuted a functional mobile mapping app built entirely on the ArcGIS Runtime SDK for Android v10.1.1. Today we are proud to announce the app has been released to the open source community … Continue reading
Key features for this release include:
- Improved layer controls for managing dynamic map services, map notes and group layers
- Support for secured services
- Expanded device support (including the Kindle Fire)
- Improved GPS auto-pan functionality
- Stability improvements (sign in, mobile content server, more…) Continue reading
The ArcGIS Viewer for Flex 2.5 release is significant because it includes a new application builder component which offers a new experience for configuring the Viewer, enabling novice users to easily configure and deploy a new web mapping application without programming or configuration file editing. It has been designed to be user friendly and makes the process of creating and deploying a new Flex-based web application very easy. In the application builder, you specify the data content, functionality, and look and feel of the web app, then deploy it.
It is also compatible with Web maps on ArcGIS.com.
Let’s say you’re a farmer or farm real estate broker, and you are evaluating whether or not to buy a piece of land. Your business and your livelihood depends completely on the land and its capability to produce income.
How do you tell the difference between a bad piece of land and a piece of land that has good potential but hasn’t been managed well or has otherwise been neglected? What can the piece of land do, and what is it really worth?
In a time of great uncertainty and volatility in financial markets and real estate valuation, the inherent capability of a piece of land’s soil asset has just become a lot easier to estimate. Image credit: USDA
To help answer these questions, esri has produced two new maps and map layers on arcgis.com. Both are planning-level maps of the economic capability of the United States’ soils. One map shows the economic capability when the soil is irrigated and the other when the soil is not irrigated. These maps are entitled Irrigated Land Capability Class and Non-Irrigated Land Capability Class, respectively.
Both maps are made directly from the SSURGO planning level soil dataset from NRCS. For the more technical among us, we used the MUAGGATT table fields ICCDCD and NICCDCD from SSURGO. Both maps cover the entire USA including Hawaii, Alaska, and Puerto Rico.
At 1:24,000 scale, each part of the United States falls into one of eight broad land capability classes.
The first four classes (1-4) are useful for growing crops, where each class from one to four needs more management or treatment, and has more limitations than the previous class. For example, classes 3 and 4 require more management or treatment than classes 1 and 2.
The last four land capability classes (5-8) are not useful for crops. NRCS recommends these lands be used for things other than crops, like rangeland, forestland, or wildlife habitat. Class eight isn’t even good for forestry, pasture or rangeland, and so instead NRCS recommends those lands be used for recreation, wildlife habitat, watershed, or aesthetic purposes.
These maps feature a color scheme (shown here in 50% transparency) that matches an image of a sample landscape that you see when you click on each soil map unit. This graphic may then be used like a second legend, displaying the eight classes for you on a replica landscape.
Land Capability Class is one of the most important concepts in the US soil dataset SSURGO. Land Capability Class is even used in some states for property tax assessment. In the State of Ohio, for example, the tax code prescribes specifically how to use this map to determine property tax.
Esri plans to release more land capability maps, specifically Land Capability Subclass. We will let you know as soon as these maps are complete and online, and rest assured that the subclasses will be in a format that is easily mashed up with either the Irrigated or Non-Irrigated Capability Class maps.
Special thanks to Michael Dangermond for providing this post. Questions for Michael: firstname.lastname@example.org
latest release of ArcGIS Online, you can now add shapefiles, text files (TXT
and CSV), and GPX files directly to your web map. You can drag data from
your computer onto your map or, with just the click of a button, add it to your
map in the ArcGIS.com
map viewer or ArcGIS
Explorer Online. Once you’ve added your data, you can configure pop-up
windows and change the symbols.
add your data to a web map, the ArcGIS.com map viewer and ArcGIS Explorer
Online automatically add the location information from your file, draw features
for each item, and store the information in the map.
addition to the above-mentioned formats, you can also add Open Geospatial
Consortium, Inc. (OGC), Web Map Service (WMS) layers to the ArcGIS.com map
viewer and ArcGIS Explorer Online. Simply click the Add button and
enter the URL to the service. The ArcGIS.com map viewer also supports the
addition of KML layers.
share your data or saved maps in ArcGIS Online so others can find them and use
them to create their own maps and mashups.
The ArcGIS Viewer for Flex version 2.4 was recently released with some great new features that include a geoprocessing widget, support for many different languages, and more. These features build upon the already easy-to-configure Flex viewer capabilities that can be used with any ArcGIS Online webmap. Let’s have a look at how you can use your ArcGIS Online maps with the configurable ArcGIS Viewer for Flex application.
To get started with the ArcGIS Viewer for Flex you’ll need to do two things; setup your environment to host the application, and download and install the ready-to-use Flex viewer. Both are simple to do, and covered in the Getting Started help topic. Once installed you can use your own ArcGIS Online maps, or any other publicly shared ArcGIS Online maps, in the Flex viewer with a few simple edits.
When you open any map you’ll see that the URL includes the unique map ID, which we’ll use in the Flex viewer. Here’s the ID highlighted in the map URL:
The ArcGIS Viewer for Flex uses XML configuration files to control everything from the map that will be used to the widgets that are displayed and how they work. To add your ArcGIS Online map, go to the root folder where you installed the Flex viewer application (for example – c:/inetpub/wwwroot/flexviewer) and edit the config.xml file found there. Near the top, in the UI elements section, you’ll see the map tag:
Comment out the existing map tag line (or edit it) to add your map ID (in the config.xml file it is named ”itemid”) to the list of parameters, as shown below:
Now you can start the viewer from your local server (for example: http://localhost/flexviewer) and you’ll see the ArcGIS Online webmap displayed. Note that pop-ups, transparency, map notes, and other features in your ArcGIS Online map are fully supported.
The viewer can be customized easily, without the need to do any programming. You can remove widgets by commenting out the ones you don’t want; you will find them listed at the bottom of the config.xml file. You can also modify the properties of each widget (found in the widgets folder of your installation) by editing their respective XML configuration files. All you need is Notepad (or similar editor) and you can quickly create a custom Flex application for your ArcGIS Online maps.
Those familiar with Flex can create and add your own custom widgets, and a lot more, via the Flex API. To deploy the finished application, just post it out on your web site.
For more information see the following:
Of interest to its hydro customers, Esri has web-enabled four more hydro-related soil maps of the United States from the NRCS SSURGO dataset. The source of the data for these maps is the Map Unit Aggregate Attribute table or MUAGGATT.
The new maps released are as follows:
Ponding Frequency – Presence*
The percentage of the map unit that is subject to water being ponded on the soil surface, expressed as one of four classes; 0-14%, 15-49%, 50-74% or 75-100%.
The shallowest depth to a wet soil layer (water table) at any time during the year expressed as centimeters from the soil surface, for components whose composition in the map unit is equal to or exceeds 15%.
The shallowest depth to a wet soil layer (water table) during the months of April through June expressed in centimeters from the soil surface for components whose composition in the map unit is equal to or exceeds 15%.
The distance from the soil surface to the top of a bedrock layer, expressed as a shallowest depth of components whose composition in the map unit is equal to or exceeds 15%.
In addition to the new maps, some changes were made to the cartography
on the previously released maps entitled Drainage Class-Dominant
Condition and Drainage Class-Wettest. In these webmaps, the new color
scheme has been improved to allow for an easier comparison of soil
drainage characteristics. With the new scheme it is now much easier to
read whether soil drains too much or too little (according to NRCS’
existing classification scheme), and how much or how little in
comparison to neighboring soils.
*These maps are ready to use, but are still beta products at the moment. They will undergo further review, so keep in mind that map colors and the contents page are subject to change. The data is in the same state it was since being provided by the NRCS. So, the data itself is not subject to change, only the cartography and the web medium.
Special thanks to Michael Dangermond for providing the post. Questions for Michael: MDangermond@esri.com.
Esri is hosting a Super Bowl survey. Please vote and explorer the results coming from around the country. Feel free to send the link to everyone you know that is interested in the Super Bowl.
Hold the SHIFT key and drag to zoom in, hold down CTRL SHIFT and drag to zoom out.
Note – Built with the ArcGIS API for Flex