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Birding (1) free software (2) GIS (3) graphs (1) LRCs (2) OS Grid References (1) OS OpenData (1) phenology (1) qGIS (1) recorders (1) recording (4) statistics (1) VBA (1)
Showing posts with label GIS. Show all posts
Showing posts with label GIS. Show all posts

Thursday, 9 August 2012

QGIS: Free Dots on Maps

This is a quick rough and ready tutorial aimed at giving a recorder with little or no GIS experience a simple method for creating a basic species distribution map in QGIS like this one:

 © Cumbria Biodiversity Data Centre. Contains Ordnance Survey data © Crown copyright and database right 2011

Wednesday, 8 August 2012

Blurring and plotting OS Grid References

This is a post about a quick and easy method for turning a list of GB Ordnance Survey grid references into "eastings & northings", so you can plot them on a map. If you want, just skip the details and download my Excel Conversion Utility spreadsheet that can:
  • convert your grid references into Eastings and Northings
  • tell you the distance of all your records from another grid reference (i.e. a site centroid)
  • dumb down your grid reference to 1km, 2km, 10km or 100km resolution.

Tuesday, 31 July 2012

Making a county base map

Cumbria Relief Map
Since starting work at CBDC I have found one of the most useful layers is a simple raster layer - a relief map of the county giving some of the main geographic features that is useful for putting underneath species distribution maps.

Common Hawker from Virtual Fauna of Lakeland