| Week of January 22 |
| Today’s agenda: | ||
| Announcements & reminders | ||
| Printing | ||
| Using Zip disks vs. hard-drives | ||
| MFworks help resources | ||
| Discuss Assignment #2 | ||
| Flowcharts | ||
| How to submit your work | ||
| Work session for Assignment #1 and #2 | ||
| Announcements & Reminders |
| Lab Supervisor schedule has begun = GIS lab now available for drop-in use | |
| Drop-in use schedule: http://publish.uwo.ca/~djfox/GISLabSked.html | |
| If you come to the GIS lab for drop-in use and the Lab Supervisor is not here, contact Daniel Fox, Spark Lab - Room 2410 SSC, djfox@uwo.ca | |
| My lecture notes are now available online at the Geog280b course website: http://publish.uwo.ca/~pazner/280b2001.html |
| Printing |
| Not possible to make printing available to you (because it is not possible keep track of use and bill you for it) | |
| So you will submit your assignments digitally | |
| Someone else will be printing your submissions for you | |
| You will only be preparing Black & White prints | |
| Gabor will mark the paper copy | |
| More on this later today |
| Zip disks and Hard drives |
| Be sure that you are working off of the macintosh HD instead of your zip disk | |
| Zip disks should be used for backup storage only | |
| At the beginning of a work session, move your assignment folder from the zip disk to the hard-drive | |
| At the end of a work session, move your assignment folder back to the zip disk |
| moving a folder from your zip disk to the hard-drive User Files (Temp) folder |
| “double click” the hard-drive icon | ||
| Find and then “double click” the User Files (Temp) folder | ||
| “double click” your Zip disk icon | ||
| Find the folder you want to transfer from the Zip disk | ||
| “drag and drop” your folder into the User Files (Temp) folder window | ||
| Why bother with this - isn’t it ok to work off the zip disk? |
| Zip disks are relatively small | ||
| Programs like MFworks need large amounts of free disk space to work well and minimize crashes | ||
| Zip disks are relatively slow | ||
| Hard-drives are much much faster = MFworks will work faster too! | ||
| Zip disks are relatively fragile | ||
| Morale of the story |
| Work on the hard-drive | |
| Backup to the zip disk |
| MFworks help resources (in addition to myself) |
| ColleenMcCauley's MF Guide - a good primer on MFworks | ||
| Available in the Geog280 folder on OSX1B | ||
| ThinkSpace, the producers of MFworks http://www.thinkspace.com/ | ||
| Assignment #2 |
| Gain experience working with Basic Operations (I and II) as they are implemented in MFworks | ||
| 2 part assignment | ||
| Part 1 - work on Spatial Relations. Measuring distances and areas | ||
| Part 2 - concept of Competing Distances and cartographic visualization. | ||
| Starting Assignment #2
Do this now… |
| Double-click your computer’s hard drive icon | |
| Double-click the temporary user files folder | |
| Choose the File menu and select New Folder | |
| Name the new folder “Assignment#2-yourname” |
| Data files |
| Open the Geog280b folder on OSX1B | |
| Find and open the “SW Ont DMSP Base SDB” folder. This folder contains all the source files for the assignment | |
| Select all the source files and then “Drag-and-drop” them into the “Assignment #2-yourname” folder you just made previously in the “User Files (Temp)” folder | |
| Start a new project in MFworks. Add all these maps to the project. Use the “Project” menu “Add multiple” to do this. | |
| Be sure to save the project |
| Part 1: Light Blobs Problem |
| Note a mistake in Part I: step A. | ||
| The instructions should read “Cover the map SW-Ont-Light100 with SW-Ont-DCW to see the nighttime lights…” | ||
| Need to apply things discussed last week | ||
| Cover, Spread, Recode, Count, Clump, binary maps, mask maps, and colour sequences | ||
| Quick review |
| What is “Cover” used to do? | ||
| to place one (or more) maps on top of a base map | ||
| to mosaic two (or more) maps together | ||
| What does the “Spread” operation do? | ||
| it measure distances from non-VOID cells | ||
| What does the “Recode” operation do? | ||
| it explicitly specifies zones from an old map that will appear in a new map | ||
| What does the “Count” function do? | ||
| it measure zone areas | ||
| What does “Clump” do? | ||
| assigns unique identifications to patches of cells | ||
| Quick review continued… |
| What are “Binary” maps? | ||
| maps consisting of only 2 zones | ||
| What are “Mask” maps? | ||
| binary maps with one VOID zone | ||
| How are colour sequences applied | ||
| First select the legend entries and then use the Legend:Color Sequence menu dialog box | ||
| Part 2: Nearest Airports |
| Tracker tool to access direction (azimuth) and distance information | ||
| Map: Ruler Coordinates menu item | ||
| Filter operation | ||
| Apply it as written, we will talk about filters in more depth in future | ||
| Flowcharts |
| A graphical way to describe a solution to a problem | |
| Used in this course to graphically explain the steps in your script | |
| Note that details are not important, the goal is to explain the overall logic behind the solution |
| A simple example |
| ApparentTempC = (ApparentTempF - 32) * 5 / 9 ; |
| Flowchart may look like this |
| Symbols are available for the MFworks operations discussed so far |
| Where is the symbol library found? |
| Open the Geog280b folder on OSX1B | |
| Open the “FlowChartSymbolLibrary” MFworks file | |
| Look at the layout window | |
| Copy and paste the icons from this layout into your own layout window to build flowcharts |
| Preparing assignments for submission |
| Use the MFworks “Layout” window to prepare your work | ||
| When finished use the “print to PICT file” button to output your work to the hard-drive | ||
| Be sure to include your name and the assignment # and the part # in the filename! | ||
| Ex: “Ripley-Ass#1-part1” | ||
| Verify that the output is what you expected using SimpleText to view it |
| After you have created your PICT files and you are happy with them |
| Make a new folder to hold the files you are submitting | ||
| Call the folder “yourlastname-Assign#” | ||
| Ex. “Ripley-Assign#1” | ||
| Place all the PICT files you are submitting into this folder AND the script files | ||
| How to Submit the Assignment to me |
| Open the Apple Menu | |
| Select “Chooser” |
| Using the chooser |
| Connect to Eagle as “Guest” |
| Select the “Geog280b” folder |
| Check your Desktop |
| There should be a new icon - a hard-drive icon labeled “Geog280b” | |
| Open this hard-drive and find the “Assign#1 Dropbox” |
| Transfer “yourlastname-Assign#” output folder to the dropbox |
| “Drag-and-drop” the “yourlastname-Assign#” folder onto this dropbox |
| Any questions? |