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Erik W. Leppo

Working as a data scientist in the environmental field with Tetra Tech (since 1994).

Working in R since 2006 and Shiny since 2017. Using GitHub for version control since 2016.

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Erik Leppo's Projects

bcgcalc icon bcgcalc

Metric calculation and other tools for Biological Condition Gradient

biomontools icon biomontools

Tools for biomonitoring and bioassessment; metric calculation for benthic macroinvertebrates, fish, and periphyton.

cbp_do_sites icon cbp_do_sites

Data Explorer for Chesapeake Bay Program Sites with Dissolved Oxygen

condataqc_tn icon condataqc_tn

Quality control checks on continuous data. Specific version for TN project using 52 North database.

contdataqc icon contdataqc

Quality control checks on continuous data. Example data is from a HOBO data logger with 30 minute intervals.

edas icon edas

Ecological Data Application System for biological stream sampling data.

kdhetools icon kdhetools

An R package and R Shiny app developed for the calculation of Kansas Department of Health and Environment's (KDHE) macroinvertebrate IBI. Developed by Tetra Tech.

maptaxaobs icon maptaxaobs

Create taxa distribution maps based on observed data.

mbsstools icon mbsstools

Suite of tools for data manipulation and calculations for Maryland DNR MBSS program.

mbsstools_supportfiles icon mbsstools_supportfiles

Supoprt files (master taxa lists and GIS fiels) for Maryland Biological Stream Survery (MBSS); fish and benthic macroinvertebrates.

mmicalc icon mmicalc

Calculation of metrics for multi-metric index (MMI) for benthic macroinvertebrates or fish. Inputs are 2 files (master taxa list and 3 column file for Station/SampID, TaxonID, and Count).

mmicalcnv icon mmicalcnv

Generate predicted metrics for Nevada MMI (USU 2012).

projecttasks icon projecttasks

Package for standardizing plots and tables across projects.

ufc icon ufc

Uncertainty / Frequency manuscript data

wrapxlconnect icon wrapxlconnect

Quick wrapper for XLConnect to read or write all worksheets as data frames.

xc95 icon xc95

Extirpation analysis (XC95) for benthic macroinvertebrates and fish for environmental variables.

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