spOutlier

Page history last edited by Anonymous 1 yr ago

 

speciesLink spOutlier

Summary

Type of tool

Application

Function

Data cleaning

Online / Desktop

Online

Computer infrastructure

Browser, text entry or Excel spreadsheet file

Development status

Established

Time of use

Before data is made available to ALA, while data is with ALA

Licence

 

spOutlier is an automated tool that detects outliers in latitude, longitude and altitude. It can also identify possible errors.1

 

Description

Data is accepted as either an Excel spreadsheet, or can be input directly as comma or space delimited fields. Results are presented as a table with outliers highlighted, or optionally displayed on a map.

 

If the user indicates that the points are "marine" the system will highlight all points that occur inland,2 and vice versa.

 

Example data with outliers highlighted.3

 

This is part of a suite of tools developed by CRIA as part of speciesLink, a distributed information system that integrates primary data from biological collections. The development was funded by FAPESP, GBIF, JRS Foundation and CRIA.4

 

Function

  • Data cleaning
    • Data cleaning
    • Data validating – geography
  • Visualisation tools
    • Maps
  • Feedback
  • User interface
    • Personal or institutional use
    • Raw data and visual presentation

 

Why use this tool?

  • Geographic error detection in collections

 

 Who will use this tool?

  • Data creation
    • Experts - taxonomy
  • Data capture
    • Curators
  • Data providers
    • Institutions
    • Private collections
    • Casual users
  • ALA infrastructure
  • No special skills required

 

 How will the tool be used?

  • Comma or space delimited text, or an xls file
  • Optional altitude
  • Online tool
  • User input is required
  • Data Cleaning includes/links to this tool5

 

 Where in the data chain could this tool be used?

  • Data source
  • ALA central

 

 When could this tool be used?

  • Before data is made available to ALA
  • While data is stored with ALA

 

Availability

 

Comments

Comment by Arthur Chapman:

spOutlier could be used directly via CRIA, however, I think it needs modification to use environmental outlier detection using my Reverse Jackknifing (as is done in the DIVA-GIS program and has been written for use in BioGeomancer) rather than as CRIA use it - i.e. only for geographic outliers using latitude, longitude and altitude as well as the offshore/onshore.7

 

 


5 Arthur Chapman, Australian Biodiversity Information Services, January 2008

6 Arthur Chapman, Australian Biodiversity Information Services, January 2008

7 Arthur Chapman, Australian Biodiversity Information Services, January 2008

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