Tripp Lowe


CSV to Shapefile in R

  #####Code based on https://erinbecker.github.io/r-raster-vector-geospatial/10-vector-csv-to-shapefile-in-r/index.html #####load libraries library(“sf”) library(“raster”) #####Set working path, input text file name, output shapefile name mypath<- “~/r-docker-tutorial/lIlk” myfile<- “20201015_1130wetland8.TXT” outfile<- “emi_20201015_1130wetland8.shp” #####Read CSV into a data frame named mydat mydat<- read.csv(file.path(mypath,myfile), na.strings = “NA”) nrow(mydat) #####Remove all rows whose longitude value is NA mydat<- subset(mydat, !is.na(mydat$WGS84_LON)) […]


How-To Notebook Part II

  For the second part of your How-To notebook, you will design, execute, assess, revise and repeat a spatial analysis component of your research project.  Specifically, I want you to: Identify one spatial analysis component of your research project; those of you working on a non-thesis degree, find a project […]


Little bit of R code for LiDAR

Using LAZ point cloud linked on our eLC site #####Processing 1 LAZ file. Will generate slope, aspect, and hillshade images; normalize the point cloud; create #####canopy height model and a custom metric #####Save the #####might need to install libraries #####install.packages(lidR) library(lidR) library(rgdal) library(future) plan(multisession, workers = 4L) #####Setting my working […]


FIA EVALIDator Queries

Forest Inventory and Analysis Program (FIA) Background: The Forest Inventory and Analysis (FIA) Program of the U.S. Forest Service provides the information needed to assess America’s forests. As the Nation’s continuous forest census, our program projects how forests are likely to appear 10 to 50 years from now. This enables […]


Mapping tabular data (Event Themes)

  OCONEE FOREST PARK (Lake Herrick):  DATA DOWNLOAD LINK  Here is the scenario:  You have been asked to compile preliminary data for the Oconee Forest Park for an upcoming project.  In the download above, you are provided three datasets: Lake_Herrick_Depths.csv: Lake depths captured with a Lowrance fish finder.  XY coordinates […]


Four Specie Habitat Suitability

Last semester, I tasked students with describing suitable habitat for four animals: wild turkey, timber rattlesnake, striped skunk, and the black bear.  Your task this week in lab is to develop a model to highlight these ‘suitable’ areas for each of the critters.  You will use the topological operators I […]