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Teng Keng Vang

Teng Keng Vang

geospatial · cartography · ecology

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    Delineating a Stream Network

    For my masters research, I needed a fully delineated stream network map of the Great Miami River Watershed that included all first order streams. Because of this… Read more “Delineating a Stream Network”

    November 25, 2019November 25, 2019 by tK

    Minimum Convex Polygon for Home Range Estimate

    One of the most surprising things for me is the search terms that lead people to my website. MCP is actually the top search term. So while… Read more “Minimum Convex Polygon for Home Range Estimate”

    November 12, 2018November 12, 2018 by tK

    Mosaic, or merge, rasters in R

    Update Oct 13, 2020: This post has gained a lot of traction in recent weeks. I do want to point out a misconception about what this post… Read more “Mosaic, or merge, rasters in R”

    November 12, 2018October 13, 2020 by tK

    MCP, KDE, and LoCoH

    Three of the most popular methods of home range estimation right now are the minimum convex polygon (MCP), kernel density estimation (KDE), and local convex hull (LoCoH).… Read more “MCP, KDE, and LoCoH”

    August 23, 2017August 22, 2017 by tK

    Local convex hull or LoCoH in R

    The local convex hull method of home range estimation is a relatively recent technique. It was developed in 2004 by Getz and Wilmers. You can read the… Read more “Local convex hull or LoCoH in R”

    August 18, 2017May 1, 2018 by tK

    Transforming Coordinates from Lat Long to UTM

    If you’re new to the world of movement and spatial ecology, its likely that you have all of your coordinates in latitude and longitude (lat long for… Read more “Transforming Coordinates from Lat Long to UTM”

    August 15, 2017August 19, 2017 by tK

    Using R to Calculate KDE Home Ranges

    Update: The code for using the adehabitatHR package is given below. Beneath the code will follow my original blog post for informative purposes. Please note, if you… Read more “Using R to Calculate KDE Home Ranges”

    August 11, 2017December 11, 2019 by tK

    Look at the Kitties

    They’re hidden very well. I heard them before I saw them. A hiss and a low growl. I was privileged to be a part of the team… Read more “Look at the Kitties”

    May 20, 2017 by tK

    Reflecting on Pumas

    Its been a great year. Never in my wildest dreams did I imagine I would be able to approach pumas, either adults or kittens. Yet, here I… Read more “Reflecting on Pumas”

    June 15, 2016June 15, 2016 by tK

    Puma Capture

    The eyes. That’s the first thing you see. The light of your head lamp bouncing off the tapetum lucidum of the puma. I don’t know what I… Read more “Puma Capture”

    March 28, 2016November 11, 2018 by tK
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