Eyes in the Sky II > GIT Web Course > Module 2 > Week 8 > Getting to Know Cartography in GIS > Getting to Know Cartography in MyWorld

Week 8: Monitoring Fires

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Getting to Know Cartography in My World

On this page, you'll review database and spatial querying as well as practice symbolizing and classifying data. You'll also find out how to gather statistics on numeric fields that you query.

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Launch My World and Open the Aspen Fire Project

My World Icon



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Investigate the Spread of the Fire with Database Queries

You might wonder . . . How far did the fire spread and how many acres did it consume by the end of Day 1? Day 2? Day 3? Day 4? Use database queries to find out.

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Create and execute a query (selection) that shows how far the fire spread on the first day

How would you write the query statement?
DATE Is Less Than 618 and Is Greater Than or Equal to 617.
  1. Click the Analyze tab.analyze button
    36 click analyze tab
  2. A new Analyze window opens.
    37 analyse windo opens
  3. In the Analyze window choose Select... > by Value. Select Records from Daily Fire Perimeter Whose DATE Is Less Than 618 and Is Greater Than or Equal to 617. Give your selection a new name, Fire 617. Do NOT make your selection a new layer. Click OK.
    38 slect by value
  4. One record is selected on the map and displayed in the selections attribute table.
    39 slection complete

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Use the Analyze mode to find out how many acres burned by the end of Day 2

Hint: To find out how many acres burned by the end of the second day, execute a query (selection) that selects the records of areas that burned on both June 17 and June 18, 2003.

How would you write the query statement?

DATE Is Less Than 619 and Is Greater Than or Equal to 617 is the query statement to use. In the Analyze Window choose Select... > by Value. Select Records from Daily Fire Perimeter Whose DATE Is Less Than 619 and Is Greater Than or Equal to 617. Give your selection a new name, Fire 618. Click OK
analyse window 618

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Create and execute a query to find out how many acres burned by the end of Day 3

How would you write the query statement?

DATE Is Less Than 620 and Is Greater Than or Equal to 617 is the query statement to use.

How many acres burned?
3,230.0976 acres had burned by the end of the third day.

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Create and execute a query to find out how many acres burned by the end of Day 4

How would you write the query statement?

DATE Is Less Than 621 and Is Greater Than or Equal to 617 is the query to use.

How many acres burned?
6,348.8247 acres had burned by the end of the fourth day.
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Investigate the Spread of the Fire with Spatial Queries

You might wonder . . . How many Parcels were within one mile of the fire on Day 1? Day 2? Day 3? Day 4? Use spatial queries to find out.

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Select by distance: find parcels that are within one mile of the fire on Day 1

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Show the results of the spatial query

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Repeat the steps above to find the parcels that were within one mile of the fire on days two, three, and four

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Create a New Project to Explore Additional Fire Data

Now that you have explored a specific fire (the Aspen fire), you will broaden your focus to look at fires globally and in the U.S. You will create a new project, add image and vector data and symbolize it as needed to help you visualize patterns in fire data.

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Where were the fires in February 2010?

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How Do Fire Prone Areas Change throughout the year?

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Create a Map to Tell a Story of Interest to You

This is the screenshot that you will post to your discussion group for your required weekly assignment.

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Resources

  • 60 Minutes Program "Age of Megafires" viewable online. Shows the results of the Aspen Fire Age of Megafires
  • Wildland Fire Graphics and information from CBS News Wildland Fire

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Movies on this Page

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How to download movies

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Flash Video Versions

Download these versions to play on your computer. You'll need an appropriate movie player to view the file, such as Flash Player, Real Player (Mac / Win), or Adobe Media Player.

Movie Icon Investigating the Spread of the Fire Using Database Queries in My World

Movie Icon Investigating the Spread of the Fire Using Spatial Queries in My World

Movie Icon Creating a New Project in My World

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iPod Versions

Download these version to play on your iPod or iPhone.

Movie Icon Investigating the Spread of the Fire Using Database Queries in My World

Movie Icon Investigating the Spread of the Fire Using Spatial Queries in My World

Movie Icon Creating a New Project in My World


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