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biogeo (version 1.0)

Point Data Quality Assessment and Coordinate Conversion

Description

Functions for error detection and correction in point data quality datasets that are used in species distribution modelling. Includes functions for parsing and converting coordinates into decimal degrees from various formats.

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Version

Install

install.packages('biogeo')

Monthly Downloads

25

Version

1.0

License

GPL (>= 3)

Maintainer

Mark P Robertson

Last Published

April 8th, 2016

Functions in biogeo (1.0)

Parse coordinate strings into separate degree, minute and second fields

Determine where an incorrect point record should be placed by showing alternative positions for that point based on common errors in datasets.

Converts coordinates in degrees, minutes, seconds into decimal degrees

Interactive plot to explore points in geographical and environmental space

alternativesenv

Determine where an incorrect point record should be placed by showing alternative positions for that point based on common errors in datasets.

Adds required fields to a dataframe containing coordinates for points

Plots point records on a world map using their latitude and longitude

Converts coordinates that are factors into numeric values

Find coordinates that are in decimal degrees

Convert decimal degree coordinates for latitude into degrees, minutes and seconds

Keep main fields in a dataframe.

Identify records that were modified between two dates

Identifies errors in a dataset of point records

A dataset for a marine species

duplicatesexclude

Exclude duplicate point records per species per grid cell

Determines whether any of the required fields are missing from the dataframe

Species collection records dataset and environmental variables data

Save data to a points shape file

Interactive plot to explore points in geographical and environmental space

Parse coordinate string using a format string

Digital elevation model 10 minute spatial resolution

Separates a coordinate string into degrees, minutes and seconds when there are no delimiters

Determine where an incorrect point record should be placed by showing alternative positions for that point based on common errors in datasets.

Get formats of coordinates

missingvalsexclude

Excludes records with missing values for points

Detects outliers using values extracted from an environmental variable

Identify records that were modified today

Read environmental variable rasters

Coordinate string format check

Returns Worldclim bioclimatic variable names

Automated data cleaning

A dataset of records from GBIF

Finds indices of records in a dataset where the coordinates are missing

Parse coordinates into separate fields

Point data quality assessment and coordinate conversion

List unique coordinate formats

Species collection records dataset

Produced a species richness map

Swap degrees and minutes in a coordinate

Outlier detection using the Reverse Jackknife

Check the precision of the coordinates

Count number of records per species

Find letters in coordinates

Convert decimal degree coordinates for longitude into degrees, minutes and seconds

Produces devices for plotting

Check precision of records

A dataset of localities

Separate coordinates into degrees, minutes and seconds

Map of the number of species or number of records per grid cell

Rename particular fields in a dataframe

Assigns points that fall into the sea to the centre of the nearest adjacent coastal grid cell for terrestrial species and to nearest sea cell for marine species

Perform error checks and produce richness map

World country polygons

Checks data structure

Elevation check

Get the extent of an object