Blog

December 19, 2016

Check the VCGI Trainings Web Page for more details about the trainings that will be offered in partnership with VT Technical College:

December 9, 2016

From our Database Administrator, Ivan Brown:

A lot of data was posted to Vermont’s Open GeoData Portal ( http://vcgi.vermont.gov/opendata ) during late 2016 (and 2016 isn’t over!).  I want to highlight some recent data posts.

Parcels: The Vermont parcels dataset (CadastralParcels_VTPARCELS) has been updated with 6 new towns providing parcel data for the first time and 33 towns providing updated data (update 2016A).  Thank you to the Regional Planning Commissions for supporting the effort to collect parcel data and make it accessible! Additional parcel datasets are already in the queue for an update to be conducted in 2017. Visit this 2016A Update page for details!

The new Vermont Statewide Property Parcel Mapping Project and the new Vermont Statewide Property Parcel Mapping Program are gearing up.  The project and program will yield a lot of benefits to the state, including consistent parcel data structures, efficient parcel data exchange/aggregation/use, and increased parcel data coverage.  For more information on the Vermont Statewide Property Parcel Mapping Project and the Vermont Statewide Property Parcel Mapping Program, go to http://vcgi.vermont.gov/parcels .

Lidar: An enormous number of lidar data derivatives were posted to Vermont’s Open GeoData Portal during 2016.  Also, more lidar data resources are always moving along the conveyor belt as lidar data coverage increases.  The lidar data derivatives can be discovered by searching Vermont’s Open GeoData Portal ( http://vcgi.vermont.gov/opendata  ) with the keyword “lidar” or by simply clicking on the “LIDAR related data” link.

County/Town Boundaries:  VCGI recently completed a long-awaited update to the State’s county, town, and village GIS dataset (BNDHASH).  This dataset combines (“hashes together”) data from “best available sources” to map the location of county, town, and village boundary lines.  VCGI leverages information from official surveys (when available), parcel datasets (recent), and other agency datasets (e.g. VTrans’ county/town boundary data).  This information is reviewed and weighed against existing boundary lines and supporting documentation to determine if the information should be used.  The goal is to improve the data over time.  The latest BNDHASH boundary data is available from VCGI’s Open Geodata Portal (http://vcgi.vermont.gov/opendata).  PLEASE NOTE:  BNDHASH feature class names have changed;  This may impact .mxd files, etc. when the new files are swapped.  The associated Vermont Geographic Area Code lookup tables “GEOCODES”, which are based on the VGIS standard, have also been updated.

Other Data Recently Posted:

  • UtilityTransmit_VECDISTLINES (VEC Primary Overhead and Underground Distribution Lines)
  • CadastralConserved_PROTECTEDLND (Vermont Protected Lands) (a new post of this dataset was conducted on 11/18/2016)
  • CadastralOther_NATWILDAREAS (Wilderness Areas, including National Wilderness Areas)
December 5, 2016

VCGI has been busy migrating the VT Interactive Map Viewer (an application that uses the Microsoft Silverlight  plugin) over to HTML5.  Today we are pleased to announce our 1st BETA! This new VT Interactive Map Viewer is designed to replace the current viewer.

KEY FEATURES:

  • Supported on all modern browsers (desktop computers, tablets and phones). No plugins required.
  • Complete functional equivalency to the current SilverLight viewer.
  • Access to all of VCGI's Open Data via the Layer Catalog tool.
  • Changeable layer symbology.
  • Google Street View widget to get a ground view.
  • Save your map for later use and/or sharing. NOTE: requires that you have an ArcGIS Online Account (available free https://www.arcgis.com/home/createaccount.html)

Please take the BETA for a spin: http://dev.maps.vermont.gov/vcgi/html5viewer/?viewer=vtmapviewer

…and when you’re done kicking-the-tires let us know what you think: SURVEY: https://www.surveymonkey.com/r/699H8PJ

This is a quick one-week BETA which will be closed COB 12/12/2016.  Thanks again for your input!

November 22, 2016

Need something to look forward to to get you through Holiday Preparations? How about an evening with your fellow geo-appreciators at Three Penny Taproom in Montpelier? Join us December 14 to get in the holiday spirit.

Get the details here: http://vcgi.vermont.gov/geobeers_20161214

November 4, 2016

This data is the descendent of the "Conspub" layer that had been maintained by the UVM Spatial Analysis Lab, but it is NOT simply an update, rather it is a new layer. Over the past year VCGI and contributing partners (The Vermont Land Trust, The Nature Conservancy, The Vermont Housing and Conservation Board, The Vermont Agency of Natural Resources, and Regional Planning Commissions throughout the state) have worked to create a new data schema, associated standard, and to populate this initial release. 

Please be aware that there are many known errors (gaps, omissions and overlaps) in this initial release. Many of the gaps are technically not errors as they represent private inholdings, e.g. “donut holes” in larger parcels, while many overlaps are small errors that occur when features from different sources get combined. These errors were not only expected but anticipated as a way of improving overall data accuracy by unifying various sources into a more accurate whole. The current topology report shows a total of:

  1. Must Not Have Gaps (donut holes), 4262 errors; and
  2. Must Not Overlap, 1851 errors.

Thru an iterative approach, the goal is to create an authoritative dataset of these features in the VT Open GeoData portal (VCGI’s data delivery platform) while accommodating the business needs of the many contributing organizations and those of the end users. The adoption of the Vermont Protected Lands Geospatial Data Standard and this initial data release represent the first step in that process. Combining additional and more up-to-date data submissions from our partners with a regular update interval (possibly annually) the goal of a stable dataset with minimal duplicate features or topological errors will eventually be realized.

If your organization would like to utilize this standard please contact VCGI for metadata and geodatabase templates that can help in the conversion to, or creation of, data that meets this Data Standard; or email accd.vcgiinfo@vermont.gov.

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