Webinars Scheduled, LiDAR Information, Parcels Service Updated

October 1, 2014

LiDAR_Status_2014_250dpi_092914

by Leslie Pelch, VCGI

Parcels: the parcels web map service has been updated to reflect additional or updated parcel data (also available for download)

LiDAR:

  • In addition to completing the Rutland County collection (orange in map above), the entire Winooski River Watershed plus some additional area will be collected in 2014 or 2015. The project will cover more than 2400 square miles (light green in map above), complete Lake Champlain Basin coverage on the Vermont side and include a new coverage for Chittenden County. Total project funding was $880,000 and a total of six cooperators contributed to the project.
  • A pilot area Web Map Service of LiDAR data will be available soon!
  • Updated ArcGIS Online VT LiDAR map makes finding information about available LiDAR and derivatives easier: http://vcgi.vermont.gov/LiDAR

Fall Webinar Series Scheduled (all will be recorded and posted at VCGI’s Youtube channel):


Vermont LiDAR Update – Summer 2014

July 3, 2014

Rutlandstatus

Mike Brouillette, VCGI

2-Foot Contours Almost Done: After engaging in a lot more troubleshooting/programming than I had originally expected, I am now confidently coasting toward processing the final (and fully tested!) Essex Data extent over the 4th of July long weekend. Essex was the toughest of them all and will require about 4 days to process. Next week it’ll be in the Database Administrators hands and I will ply him with coffee to get all 2’ contours from the major project areas posted as early as possible. I will forward an update at that time. This will complete “Phase I” as noted below and permit me to begin working on the smaller, existing data extents in “Phase III” while simultaneously working with the DBA on “Phase II”.

New LiDAR? The 2014 Spring data acquisition effort for the Grand Isle/Rutland County/Little & Mad river watersheds Area of Interest (AOI) sadly did not get completed due to the trifecta of late snow cover, followed by long periods of rainy/cloudy weather and topped off by a quick warm spell that propelled leaf-out a week ahead of “normal” (whatever that is). The photo above shows in light pink and yellow what was collected (Champlain Islands and Eastern Waterbury). The remainder (Mad River and Otter Creek areas) will be flown this fall.

Plans to Collect Even More Data? Efforts are underway to pursue the next data acquisition for spring 2015 (very small possibility it may be fall 2014 but don’t count on it), and it includes 1,746 square miles of Chittenden County and the final outstanding subbasin areas for the Vermont side of Lake Champlain. Subject to funding, more areas may be added but would be based on the funding sources priorities.

Thank you for all your feedback and constructive criticisms on various inconsistencies on the LiDAR web page and related documents. This helps me continually refine the information to the benefits all LiDAR data users – keep it coming.

What Has Come Before and The Plan for the Future:

Just a reminder that VCGI released the following LiDAR-based, “secondary” derivatives in May, i.e., ASPECT, HILSHD, nDSM and SLOPE data. These data were derived from the Addison, Bennington and Essex Counties and the Missisquoi Subbasin projects.

Definitions:

ASPECT:  Cardinal direction of slope from 0 to 360 degrees (East = 90, South = 180, West = 270 etc.)

HILSHD (Hillshade):  Models illumination of a surface from a light source at an azimuth of 315º and an altitude of 45º

nDSM:  “Normalized Digital Surface Model.”  DEM subtracted from the DSM – each pixel represents the height above ground, not above sea level.

SLOPE:  Change in elevation over the distance between the cell and its eight neighbors expressed in percent slope or percent grade, i.e., rise/run * 100.

The Plan:

To put this release into perspective of the overall VT LiDAR Initiative and its data related goals, a very brief overview of our approach to date follows. The fact that only 3 of the 8 steps are mostly complete belies the fact that Phase I involved a high level of effort in establishing protocols, guidelines and technical approaches that extend to subsequent phases.

PHASE I: (Includes 2012 Addison, 2012 Bennington and 2005 Essex Counties and the 2008/2010 Missisquoi Subbasin projects). These cover ~ 30% of the state.

1)      COMPLETE:                 Make “primary derivative” LiDAR data available on the VGIS, i.e., DEM and DSM, for the largest projects;

2)      COMPLETE:                 Make “secondary derivative” LiDAR data available on the VGIS, i.e., ASPECT, HILSHD, Ndsm and SLOPE for the largest projects;

3)      IN PROCESS (95%):  Integrate vendor provided 2’ contours, generate 2’ contours where needed to update the existing “ElevationContour_CN2T” data layer and make data available on the VGIS.

PHASE II: (Includes 2012 Addison, 2012 Bennington and 2005 Essex Counties and the 2008/2010 Missisquoi Subbasin projects). These cover ~ 30% of the state.

1)      IN PROCESS (25% JULY):  Process prototype of Contour, DEM and DSM data into feature and image services, respectively and make available on the VGIS.

2)      PLANNED (JULY/AUGUST):  Process all Phase I AOI’s to put Contour, DEM and DSM data into feature and image services, respectively and make available on the VGIS.

PHASE III: (Includes 2007 Bennington, Chittenden, Rutland & Washington flood plains, 2009 Barre-Montpelier, 2010 Bennington flood plains and 2012 VTrans-TSIrene projects). These cover ~6.8% of the state but not exclusive of larger projects, e.g., 2012 Bennington County vs. 2007 & 2010 Bennington floodplains.

1)      PLANNED (JULY/AUGUST):            Make “primary derivative” LiDAR data available on the VGIS, i.e., DEM and DSM, for the largest projects;

2)      PLANNED (AUGUST/SEPT) :                      Make “secondary derivative” LiDAR data available on the VGIS, i.e., ASPECT, HILSHD, Ndsm and SLOPE for the largest projects;

3)      PLANNED (SEPT/OCT):           Integrate vendor provided 2’ contours, generate 2’ contours where needed to update the existing “ElevationContour_CN2T” data layer and make data available on the VGIS.

PHASE IV: (Includes 2007 Bennington, Chittenden, Rutland & Washington flood plains, 2009 Barre-Montpelier, 2010 Bennington flood plains and 2012 VTrans-TSIrene projects). These cover ~6.8% of the state but not exclusive of larger projects, e.g., 2012 Bennington County vs. 2007 & 2010 Bennington floodplains.

1)      PLANNED (SEPT/OCT):            Process Contour, DEM and DSM data into feature and image services, respectively and data available on the VGIS.

 

Please refer to vcgi.vermont.gov/lidar for information about the VT LiDAR Initiative, LiDAR related data and resources, or contact me with questions: mikeb@vcgi.org or 802-882-3008.

 


UVM Staff Award Results in Geospatial Trophy!

May 28, 2014

From  http://www.uvm.edu/~uvmpr/?Page=news&&storyID=18463

OCG Trophy_05.01.14_crop OCG Trophy_05.01.14_toponly

“Six UVM staff members were recognized for their extraordinary contributions and overall impact on the university on May 5 at the inaugural President’s Our Common Ground Staff Award recognition breakfast in Billings Library.

Honorees were chosen from a pool of 24 nominees for exemplifying the qualities of the University of Vermont’s Our Common Ground, the statement of aspirations and shared values of our community: respect, integrity, innovation, openness, justice and responsibility.

Honorees were presented with a hand-crafted award designed by local artist Chris Reck that UVM President Tom Sullivan said embodies the values expressed in the President’s Our Common Ground award. Anchored by a piece of red cambrian sedimentary rock known as Monkton quartzite used in many of the university’s buildings, the award features the Our Common Ground statement transposed on an intricate woodcarving map of the campus.”

Chris Reck of Direct Design contacted VCGI for ideas regarding who might actually create the 3D wood topo map featured in this trophy. Leslie Pelch of VCGI sent a message out on the VT GIS email list serve and several people got in touch with Chris to say they might be able to help. In the end, Spencer Wright of Bristol Contours (802-355-0800) was able to create the maple topo map of a portion of the UVM campus.

 


VCGI and Census Webinars Coming Up!

May 22, 2014

Webinar: Remote Sensing of Lakes: They’re Not All Just Blue!

Come join us for an exploration of the remote sensing of lakes with Shane Bradt of UNH! While most common land remote sensing approaches treat surface water as a single class (“blue” most of the time), a great deal of information about the dynamics and water quality of lakes can be obtained through remote sensing. This webinar will detail the important considerations when using remote sensing on inland water bodies, and summarize some of the recent advances in the remote sensing of lakes.

Webinar takes place May 28 from 1:30 to 2:30 PM

Reserve your FREE Webinar seat now at:

https://www3.gotomeeting.com/register/563164318

U.S. Census Bureau: Free Data Access Summer Camp (Webinars!)
This summer our Partnership and Data Services team will be conducting a series of free data access webinars. Join us online to learn about our datasets and data retrieval tools.We will be conducting thematic sessions utilizing different data tools such as the American Fact Finder, Quick Facts, Data Ferret, Local Employment Dynamics, Business Dynamics Statistics, Voting Hot Reports, etc. All sessions will be conducted by a representative from the U.S. Census Bureau, and will last approximately 2-3 hours.More details and links to register:

http://vcgi.vermont.gov/census_data_webinars_2014


VT Interactive Map Viewer BETA 2.0 Released

April 29, 2014

imv_beta

The VT Center for Geographic Information (VCGI) is pleased to announce an “open beta release” of the new VT Interactive Map Viewer (VT Viewer).

You can participate in a guided tour during the free webinar on April 30.

This BETA 2.0 release includes numerous enhancements

  • The toolbar has been rearranged to make it more intuitive.
  • The look-and-feel of the VT GIS basemap has been significantly improved.
  • Several dozen new data layers (including parcel data) have been added to the viewer.
  • User can change the symbology of any layer.
  • Complete set of VT imagery and imagery indexes.
  • Several new supplemental background basemaps have been added such as contoured hillshade and the latest USGS Topographic Maps.
  • All layers have links to full documentation and downloadable data files.

Now we need to hear from you! Please take the new VT Interactive Map Viewer (BETA 2.0) for a test drive, then let us know what you think by completing the Feedback Survey.

VT Viewer (BETA 2.0): http://dev.maps.vermont.gov/vcgi/vtmapviewerbeta2/

User Survey: http://dev.maps.vermont.gov/vcgi/vtmapviewer/survey.html

The BETA 2.0 release will be available as an “open beta” until May 31st, 2014. After that VCGI will be reviewing all survey feedback and applying any needed adjustments/fixes to the site. We plan to release the final version by July 1st, 2014. It will replace the current VT Interactive Map Viewer.

You can participate in a guided tour during the free webinar on April 30.


VCGI Update

April 14, 2014

statehouse_0_3_2013_sm

Request for Information posted re: VT Open GeoData Portal:

The VT Center for Geographic Information (VCGI) currently hosts Vermont’s Open GeoData Portal (herein referred to as the GeoData Portal), which allows users to access and use geospatial information and services. This Request for Information (RFI) is designed to gather information from geospatial technology providers regarding the development of a new VT Open GeoData Portal. The results of the RFI may or may not lead to the release of a Request for Proposals (RFP).

The full RFI has been posted here http://vcgi.vermont.gov/rfps

NOTE: All questions related to this RFI should be emailed to steves@vcgi.org by April 28, 2014: 3PM EST. All questions and associated responses will be made publicly available by May 5, 2014: 3PM EST on VCGI’s website.

All 2013 Orthoimagery has been posted:

Ortho imagery covering the northwest portion of the state as well as the Barre-Montpelier area was collected in the spring of 2013. All of the northwest corner was collected in 4-band color infrared as well as black and white with .5 meter pixels. Additionally, much of Chittenden County was collected at a resolution of .15 meter pixels, with the more mountainous eastern edge of the county being collected at .2 meter pixels.  The Barre-Montplelier area was collected as a resolution of .3 meter pixels.  More info here: http://vcgi.vermont.gov/2013_imagery_available

Mapping it up in VT and NH (webinar) scheduled:

VT and NH both have powerful, newly updated online map viewers.  While each viewer is customized to the state’s GIS resources, they share a common framework and much of the same functionality.  Come for a tour of the new interface(s), layers and tools for both viewers. Participants in this webinar will learn how to make maps from the layers provided by VCGI and NH GRANIT, add your own data to the maps, save your map as an image or to print, and more.

Date:  Wednesday, April 30, 2014

Reserve your Webinar seat now at:
https://www3.gotomeeting.com/register/477757118


VT Parcel Boundary Map Service Now Available!

February 13, 2014

Leslie Pelch, VCGI

parcel_status_map_jan2014

VCGI has posted a Parcel Boundaries Web Map Service that will be updated at least annually as we receive updated parcel data. Web map services allow users to bring map layers and imagery into their GIS projects or map mashups without actually downloading any data by connecting to the service of choice via the internet.

Contact Leslie (lesliep@vcgi.org or 802-882-3002) if you need help understanding how to connect to this service. More info here: http://vcgi.vermont.gov/warehouse/web_services/map

 


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