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Introduction
Using the CGDI
Standards-Based Web Development
Describing Geospatial Resources
Publishing Geospatial Data
Visualizing Geospatial Data
Accessing Geospatial Data
Encoding geospatial data
Manipulating geospatial data
Querying geospatial data
FAQs
Bookmarks
Using Gazetteers
The CGDI in Action

WFS in action

An ice storm has hit Snowsville, and the damage to electrical utilities was extensive. In order for the municipal authorities to request emergency funding, a damage assessment report, including an inventory of the existing wooden telephone poles, must be completed ASAP.

Click on the arrows below to see how the assessment report is done.

He then selects another red pole on his map and repeats the process until there are no more red poles.

When Joseph has completed all the assessments, he generates a report that summarizes the damage. His report is then incorporated into the response plan formulated by municipal authorities, who receive the much needed funding within weeks.



Note

If Joseph and another colleague are simultaneously checking different telephone poles, they can both “lock out” the other from updating a specific pole simultaneously with the LockFeature operation. Once their task is complete, they can manually unlock the pole feature or add a timeout (specified period of time) to the initial lock.

Before you start

If a web feature service, such as the hypothetical one described above, allows clients to manipulate features, it must ensure that the client has authority to do the manipulation. It is up to the site that implements the web feature service to manage user-access controls for the upload of new or edited features. This would likely be implemented using a user-authentication mechanism that would verify the identity and the role of the user.

 



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