ArcGIS

Data Sources:

For the City of Toronto:

0.5 Meter interval contour map (Lidar):

(https://mdl.library.utoronto.ca/collections/geospatial-data/toronto-lidar-2015)

1 Meter interval contour map:

Example 1: Batch Clip

This first example model will be used to process a batch clip. It will iterate through shapefiles in a directory, and clip each one based on another shapefile’s area, and save the new clipped shapefiles to a different directory.

To download a DEM file from GeoGratis as was done in this tutorial, follow the instructions in this guide. [UPDATE LINK]

You may also find these related guides helpful as you work with DEM files: [UPDATE LINKS]

For an accessible introduction to coordinate systems and map projections, please see the Coordinate Systems and Projections page in the Scholars GeoPortal user guide or UofT Geography Professor Don Boyes’ lecture materials on Earth and its coordinate system.

1. Use the Add Data button to add each of the datasets you wish to convert to the map document.
   

For users reauthorizing copies of ArcGIS already installed on their machine, visit http://esri.com/educationedition to register your license code with Esri, then open ArcGIS Administrator (located in the ArcGIS program group in the Start menu). Click on the Desktop folder in the left-hand pane, select the Advanced (ArcInfo) Single Use option, then click Authorize No​w. The reauthorization procedure will be similar to the process that begins in step 8. 

DEMs stored as point shapefiles

1. Add your DEM point dataset to your map document. Open up the Layer Properties window and click on the Source tab. You should see the line “Coordinates have Z values: Yes” in the Data Source section of the window. This indicates that elevation or height values are included in the spatial reference information for each entity in the dataset.
   Click OK or Cancel to return to the map document.

1. Use the Add Data button to add each of the datasets you wish to convert to the map document.
   

1. Georeferencing requires a spatially referenced dataset that will be used to provide locations on the scanned map with their associated coordinates. In this example, we will match intersections represented on the scanned map with a shapefile of city streets.

1. Use the Add Data button to add the dataset you are interested in selecting from to your map document. For this example, we will use a shapefile that represents the municipalities that comprise the Toronto Census Metropolitan Area (a component of DMTI’s CanMap Route Logistics suite of products) to create a new dataset that depicts just the boundaries of the City of Toronto.