- Catch up for eveyone – see where we are at
- Gathering up data from the city – and assignment
- Creating raster layers (DEM) from LiDAR Data
Last time you access lab materials – your account were setup. This week we are going to ensure we know how to access GIS software such as QGIS and ArcGIS as well as managing data on the GIS Lab file server.
Data Gathering and Assignment
Assignment for the this week (due in class November 8) – 15% of your grade
We are going to download layers from the PG CIty Open Data website and create a data set that holds necessary information for making land use decisions. We are also going to build a high resolution Digital Elevation Model (DEM) from the Lidar data set we have for UNBC. The deliverables for the assignment will be:
- A set of layers clipped to the extents of the ortho photo we have (next section)
- A well organized folder structure that holds the data for this assignment
- A written document describing the steps taken to create this data base, including:
- a description of the folder oganization (screenshots may help)
- how you determined the area of interest for obtaining the layers
- which layers you have chosen to use with a description of why at least 5 of them were chosen
- two maps (one with the DEM/Shaded Relief layer – and one of your choosing) of the area with a suitable number of layers on each map
- GPS data collected using your cells phones as explained in the November 1 lecture/lab
- Using the smartphone apps (IPhone – OpenGPX Tracker and QSMand+ for Android) collect track data (and possibly waypoints) saved as a GPX file
- Take photos that have a geotag on them to create KML files (i.e GPSPrune)
I know what you are thinking – UNBC again!!
As we are going to be combining many types of data for this weeks lab and assignment – we are using and area where we all will be frequenting.
Open up QGIS or ArcMao and load the following shape file into the canvas:
This is a layer showing the extents of the ortho photos we have for the City of Prince George (somehow we have lost the majority of them – but Scott will ask to get copies again. These outlines reflect the location of ortho photos as well as LiDAR point cloud data. We are wanting to use the block that UNBC fits into.
We do not know which grid boundary we are interested in (unless yo know your UTM coordinates really well).
Scott will show you some methods of using web protocols and other layers to determine the data we will be using.
Open Data Prince George
Grab data from:
This site has tons of data to work with. This is where you will find all we need for this weeks assignments.
Install the plugin OpenLayers –> web –> OpenLayers –> OpenStreetMap
Add Data (the drop down arrow on the right) –> add base map –> OpenSteetMap
Using these layers via web services you can easily find the name are and the grid cell that surrounds the LiDAR and Ortho Imagery.
to be continued.