Digital Mapping(History 9808A)

6 October 2014

Today’s Agenda Spatial Humanities Blog Leaders Google Earth workshop GIS lab tour

Blog Leaders

Google Earth Workshop - Part I: Navigation Open up GoogleEarth1. In the Search box in

the upper left-hand corner, enter ‘London, ON' and click on Search button

2. Try out the zoom tools in the top right of the map or your mouse to zoom in and out and pan around.

Let’s go downtown…

Part I: Navigation: Layers Google Earth is a rich data

repository that is continually updated. Browse and reveal this data

using the Layers panel at the bottom left of your screen.

1. Click on the + boxes next to the various themes to explore what is available.

2. Click the check boxes for the item(s) you wish to display on your map.

3. Interact with layers on the map by clicking on them.

Part 2: Setting up your workspace Create a folder in 'My Places' to store all of the

files you import and create.1. In the Places box, right-click on the My Places

folder and navigate to the Add sub-menu.2. Click Folder.

A dialogue box will pop up. Enter a title for the folder and a brief description of its contents

3. Click OK. You will see your new folder in the Places box.

(Right-click to edit your folder's title or description)

4. Click Properties, then edit the necessary information in the same way you entered it.

Part 3: Adding data: KML files GE uses a special file type: Keyhole Markup

Language (KML) Let’s search for KML files on your topic of

interest and add them to Google Earth 1. Search Google for already created KML

files to add to Google Earth. (e.g. OHL arenas) 2. Download file and then FileOpen. 3. Move these files into the folder you

created in My Places by dragging and dropping.

Part 3: Adding data: Placemarks We can add a Placemark by clicking on the map1. Click on the yellow pushpin button 2. Enter a name and description for your placemark.3. Change the symbol by clicking on it.4. The placemark defaults to the centre of the screen.

1. To move it to your desired location, when in Edit mode click on the yellow box surrounding the pushpin and move it.

5. When you are satisfied with the symbology and its location click OK.

Editing the Properties of Placemarks: 1. Right click on the placemark and open the properties

dialogue box. 2. Make changes as desired.

Part 3: Adding data: Placemarks Using Street Addresses (or Co-ordinates) Adding a Placemark by Geocoding an Address

1. In the Search box, locate a street address. For example: 326 Homestead Court, London ON.

2. Right click on the search result and click 'Save to My Places.'

3. Drag and drop the new address to your folder in My Places.

4. Open the Properties dialogue box for this new address, and change the name, provide a description and symbol then click OK.

You can also adding a Placemark using Latitude and Longitude co-ordinates

Part 3: Adding data: Polygons Draw a polygon (shape) that outlines an area

of interest.1. Click on the Polygon button at the top2. Draw your polygon 3. Give your polygon and name and description4. Click on the Style, Color tab and change the

Area colour and opacity5. Click Ok

Part 4: Adding Images and Links Image Overlay In this example you will add a scanned aerial photo of London

Pick a photo from: http://www.lib.uwo.ca/madgic/airphotos.htm#digitalair E.g. Victoria Park (r286.jpg)

1. Zoom to the area where you want to overlay your image2. Click on the Image Overlay button3. Browse to your image (e.g. r286.jpg)4. Give your Image Overlay a title and description5. Change the transparency so that you can see the roads beneath to

assist in the placement of the image. Turn off any other layers that are obstructing your view.

6. Use the centre cross-hair marker to move the image overlay on the globe and position it in the right location

7. Use the diamond shaped marker on the left to rotate the image if you need to

8. Use the corner and side markers to resize the image.9. Continue adjusting the placement until your roads on the globe and on

your Image overlay match

Part 4: Adding Images and Links (cont’d)

Linking to an external website (or photo) to your placemarks.1. Add a Placemark to a location in which you would like to

provide a website and image for.2. In the description add some text about the location. 3. Click on Add Link and paste the URL in the Link URL text

box 4. Click OK5. Click on your placemark and follow the link in the bubble to

view the website.

You can also link to an online photo album…

To see all of the layers you have added and created at once, either zoom out or double-click the folder you created earlier….

Part 5: Saving and SharingAdd a Title1. The easiest way to add a title is to create a placemark, then remove the

icon.

Save your map as an Image (Static)2. Click 'File' in the menu at the top of the screen, navigate to 'Save,' and click

'Save Image. . ."3. Save the image to your desktop or somewhere else it can easily be found.

OR Save your Map as a KML (Interactive)4. KML (or KMZ, the compressed version) format will preserve the placemarks,

paths, zoom levels, symbology, and everything else you have specified, so that when others open the KML, they will see exactly what you saw.

5. Right-click on the folder you created in the 'Places' box. Click 'Save Place As. . ." A dialogue box will open. From the drop-down box, choose 'Kml (*.kml)' and enter a descriptive name. Save your new KML to an easily accessible location.

6. Share your new KML with others simply by attaching it to an e-mail, or filesharing app (if large)

Want to do more? Create a Google Earth narrated tour…

http://www.google.com/earth/outreach/tutorials/kmltours.html Warning: could be challenging!

Also think about Screencast-o-matic Explore other applications:

Google Map Maker MapTiler ArcGIS desktop (Western download)

Make use of the GIS lab here on campus: Map and Data Centre website - links to Aerial Photos and Fire Insurance

Plans Contact information for Map and Data Centre staff Fire Insurance Plans available at Western Archives Link to ITS information about ArcGIS software and 

Virtual Campus courses/request form We spoke with Christine Homuth (chomuth@uwo.ca) and she is

happy to help out with project by email or drop-by.

Next up… Assignment #1 proposals due Oct 15th (electronic

or blog post) Blog leaders for October 20th

1. Dom2. Frank3. Rachel

Looking for a blog topic? Pick an application that you think would be

useful for assignment #1 (or #2) and review it for the class

Aside from ones we have already run into, check out DiRT – Digital Research Tools at: http://dirtdirectory.org/

And remember to comment on others’ blogs!