Community Maps is an initiative to develop a suite of authoritative, multi-scale global basemaps for use in a wide variety of applications. These basemaps are made available as free online map services hosted on ArcGIS Online.
Currently there are four basemaps in the Community Maps Program:
The basemaps in the Community Maps Program are built from the best available data sources, including authoritative content contributed by those who know the data best—Esri users. For more detailed information on the contributors to the Community Maps Program, please refer to the Contributors page in the Community Maps Resource Center.
Organizations that contribute their authoritative content to the Community Maps Program realize several benefits:
No. At this time the Community Maps map services are cached map services. The original source data used to produce these cached map services is not accessible through the services and remains solely the property of the data contributor.
Participants in the Community Maps Program retain full ownership of the content they contribute, but Esri must have permission from an organization to host its content before we can actually publish it. For more information on the participation agreement (form G-181), please see this brief FAQ.
The World Topographic Map service is updated monthly. However, contributors to the map service are not required to submit updates to their content at this frequency. At a minimum, we ask that contributors update their map content on an annual basis.
If you are interested in contributing to the Community Maps Program, please visit the How to Participate page in the Community Maps Resource Center.
Participants who contribute their data as a file geodatabase may use whatever local spatial reference best suits their needs. If contributing a map cache, participants should make sure that the Web Mercator Auxiliary Sphere projection is used.
No. Only a subset of feature classes from the Local Government model are used to build the World Topographic Map. While the actual number of feature classes you will need to populate will depend on the layers you are contributing, they will represent just a small fraction of the overall model. That being said, we encourage our contributors to explore the other parts of the Local Government model to see if it fits their business needs. There are many reasons to adopt pieces of this model aside from Community Maps.
No. Because Esri is still only publishing a map cache of contributed data, the standard program participation agreement (G-181) should continue to meet the needs of most participants. lf your organization believes the program changes make an additional data sharing agreement necessary, we will be happy to work with it to meet its requirements.
Esri has launched a web-based application where contributors to the program can apply to become data stewards for data in their geography. Esri needs new and existing contributors to perform this quick apply step to get their organization registered as authoritative data providers in their geography for their specific data themes. Esri will use this registration information provided in the apply process to manage data submissions, stewardship boundaries and track data stored centrally at Esri. Contributors will use this same web application to upload updates and manage all additional data submissions in the future.
The new Map Templates are configured to a data schema in the Local Government Information Model. Esri has released conversion tools and Help materials on the Resource Center to assist participants with migrating from the former model to the Local Government Model. These tools may need to be reconfigured to fit your specific data distinctions but will convert features into the proper feature classes taking into consideration the subtypes and domains in the Local Government Model.
No, the basemap will not only display the two data layers submitted. Esri has seeded the basemap with content from licensed commercial vendors and will simply integrate the two data layers supplied by the contributor with the existing commercial content. In this particular example, Esri will have Administrative Boundaries and Roads already from the commercial vendor in the basemap. Therefore Esri will turn off those Roads and Administrative Boundaries from the commercial features within the contributor’s Area of Interest and replace them with those from the contributor. All other commercial content will remain in the basemap to generate the full suite of map elements. However, in a similar instance where a contributor is providing a feature layer which is not in the existing commercial content, such as Parcels, then the contributor’s content will simply be appended to the existing commercial map in the area.
All contributors to the Community Maps Program have a geographical extent associated with their account. During the initial program application, this polygon boundary is used to determine if other participants are providing similar data within the same geography, and later in the process is used to define the extent of the data that will be contributed to Community Maps. To find out more about this contribution extent see this blog post.
No, the parcel fabric schema is not required for contributing to Community Maps 2.0. While the parcel fabric has additional benefits for managing data maintenance and using the apps such as Tax Parcel Viewer or Parcel Value for Mobile, this schema is not required for Community Maps. In the World Topographic Map parcels are only displayed as polygons at 1:1000 & 1:2000 scales. At these scales the polygons are displayed as a single symbol meaning no special symbol attributes are required and these features are not labeled.
Esri is accepting both situations. A growing number of local government contributors are submitting tree data as points, whether for just their parks are special area of interests (campus) or their entire city. The attribute [NAME] values we use to display the trees in the map template are the following:
The Community Maps Program accepts a wide variety of layers. In the online Community Maps Contribution Application these layers are divided into two categories - Basemap Layers and Campus\Other Layers. Basemap layers are the predominant features in the World Topographic Map and display at widest range of scales (with the exception of Parcels, which only display at the two largest scales). Campus\Other layers represent larger scale features typically found on educational and commercial campuses. Many of these layers, such as Pavement Marking Lines, only display at 1:9128 or larger, while a few, such as Trees, can display at a wider scale range. The combination of layers from both categories provides the richest and most useful basemap, so contributing organizations should make sure to investigate both categories of layers and contribute any of them for which they are the data steward.
The Community Maps Program can only allow one contributor for each individual basemap layer within a particular area of interest. For example, two different organizations cannot contribute road centerlines for the same city area. If an organization applies to contribute content to Community Maps, the program will verify that no other organizations are contributing the same layers for that geographic area. If an existing contributor, or data steward, is found, then the Community Maps team will notify them that another organization would like to contribute the same content for their area of interest. The applying organization is also notified that a data steward for the layer(s) in question already belongs to the Community Maps Program. Using this information, the two organizations should discuss which one should be the data steward for the layers moving forward. The Esri Community Maps team can help facilitate and participate in this discussion if desired. If a mutual decision cannot be reached, the Community Maps Program will choose the data steward for the layer(s) based on which content produces the best output in the ArcGIS Online basemap services. For more information on data stewardship in the Community Maps Program see this topic in the online Help.
Yes. If you are unable to use the upload capability of our online Contribution Application, please just contact us at firstname.lastname@example.org, and we will arrange an alternative upload option or provide physical shipping support.
Feedback map services are available for the Imagery, Street and Topographic basemaps in ArcGIS Online. Simply navigate to the appropriate feedback service and use the Edit tool to add points, lines or polygons to describe the mistake. The ArcGIS Online Content team will address the issue and update the status of the comment as soon as possible.
Yes. Building footprints are symbolized according to the value of their FEATURECODE attribute. The accepted values for FEATURECODE in the building footprint layer are:
Building footprints without a FEATURECODE value will be symbolized as General.
No. While the ArcGIS Data Reviewer extension is particularly useful during the data review phase of the contribution process, it is not required. Similarly, the Data Interoperability extension is a terrific tool for migrating map data into the Local Government Information Model schema preferred by Community Maps, but it is not required to participate or perform the data migration.
Yes. While the World Topographic Map remains the primary recipient of most Community Maps contributions, beginning in 2014 we expect to be able to blend relevant layers into the Streets and Light Gray Canvas maps as well.