Spatial Thinking – the Legal Case

This is a post about Spatial Thinking in the context of the application of justice in New Zealand.  Only a few pretty pictures to go with this one I’m afraid. Growing up in relatively small-town America, I always knew to be a bit careful when driving through the wop wops – one could never be […]

On-Line Training Courses for ArcGIS

This post covers the on-line tutorials available to LU users. The GIS team is often asked how people can learn how to do more stuff.  One of the perks of our ArcGIS site licence is that we can free access to a range of on-line tutorials from ESRI, the creators of ArcGIS.  These range from […]

Web Feature Services Part 2 – LRIS and LDS

Part 2 of a focus on Web Feature Services (WFS), this time on connecting to data from LRIS and LDS. A previous post covered the basics of connecting to Web Feature Services (WFS).  For this post, we’ll look specifically at how to connect to Landcare’s data portal (LRIS) and the LINZ data service (LDS, not […]

Web Feature Services – real data from the web to your desktop

This post looks at web feature services (WFS) where real data from internet sources can be added to your desktop for analysis purposes. In a previous post we looked at web services that could be added to a map.  While these are great for map making purposes, they do have their limitations, especially if you […]

How do I clip raster data?

This post covers how to clip out portions of raster grids (updated May 2021 for Pro). A previous post covered how to clip vector data (feature classes and shapefiles).  Another key skill is being able to clip out portions of raster grids, such as a DEM, or perhaps a TIF image.  We’ve got three options […]

How do I Clip Data?

This post covers a very useful skill – clipping subsets of vector data from larger datasets (clipping raster data is covered in another post – Updated May 2021 for Pro). As seen is some earlier posts, most of the data on the J: drive is at a national scale.  In many cases, though, you’ll be working […]

How do I create a new feature class/shapefile?

This post covers an essential skill – creating new feature classes and shapefiles.  We’ll cover how to create a blank layer and then how to digistise new features into that.  (Updated April 2020 for Pro) Creating you own data layers is an important part of most analysis projects, so in this post I’ll cover some […]

The data I need aren’t on the J: drive!

This post outlines some of the on-line data portals, including, and portals from LINZ and Landcare Research. Before getting to the main topic, I’ll put a quick word of appreciation in for Dorje McKinnon, who is heading overseas for a wee while.  As the Applications Group Manager at ITS, Dorje’s been a big supporter […]

Data with a View

This post covers viewsheds – raster grids that indicate which areas are visible from a specific location. (Updated May 2021 for Pro.) Some of you may remember that stately Timeball Station in Lyttelton: Coming out of the tunnel and into Lyttelton, it was hard to miss the structure above the port. The castle-like building stood […]

Data, data everywhere, but what about what I need?

This post outlines the data currently available on our network. Those of you who have done any work with GIS will know how important the right data are.  Spatial analysis is very much a garbage in-garbage out process so making sure you’ve got good data to start out with is crucial.  Last week’s post was […]