Introduction To Geographical Data and TEISS Maps

1. Introduction To Geographical Data and TEISS Maps Angelique Luedeker, ITEP/TAMS Center

2. Homework Discussion Are there any questions on the homework?

3. GIS Definitions • A Geographic Information System (GIS) is used for capturing, storing, analyzing and managing data and associated attributes which are spatially referenced to Earth OR • A computer system capable of holding and using data describing places on the earth's surface OR • Graphic representation of where features are, explicitly and relative to one another.

4. Foundation of GIS • Geographic Data - referenced spatially by a coordinate system • Latitude and Longitude • Example: 56°27'40" and 116°11'25" • Universal Transverse Mercator (UTM) • Example: 545,000.000 and 6,453,254.000 • Legal Survey Description • Example: T122N, R71W, S12 • Layers • Representation of a dataset in a digital map environment • Map Legend

5. Datum • Reference specifications of measurement system, usually a system of coordinate positions on a surface (horizontal datum) or heights above or below a surface (vertical datum) • North American Datum of 1927 (NAD 27) • Zero based on geographic center of lower 48, in Kansas • World Geodetic System of 1984 (WGS 84) and the North American Datum of 1983 (NAD 83) • Zero is based on Earth’s center of gravity • These work well with GPS • In U.S., for a given point, coordinates measured with NAD 27 and those measured with WGS 84 or NAD 83 can be several hundred feet apart, depending on where the point is Source: ESRI @ http://support.esri.com/index.cfm?fa=knowledgebase.gisDictionary.search&searchTerm=datum

6. Different Data NAD 83 + WGS 84 NAD 27

7. Visualization of Layers “Mini-maps” or “sub-maps” Come together to make a map that answers a question

8. TEISS Map Interface What are the different toolbars? How do you display or hide layers? How do you display or hide labels? How do you customize the appearance of layers? How do you customize the appearance of labels? How do you import a map? How do you export a map?

10. Annotation Bar Explained Select Zoom In Zoom Out Pan Zoom In to Site Domain Zoom out to Site Domain Delete Can also use “Delete” button on keyboard Draw Rectangle Draw Circle Draw Irregular Shape Text Box Marker Mark a spot on the map Draw Arrow Compass Arrow Overlay Control Another way to customize view instead of using file tree Measure Distance Import Map Define Site Domain Customize Colors Query (Search) for specific polluter

11. Working with Layers Click and drag to move the layers (or use arrows)

12. Now the tribes are on top of all layers

13. Top Visible Bottom Hidden

14. Click the + sign to expand file tree.Double click on a symbol to change it.Click box next to “Uniform Color” to change it

15. Click on the color to change it

16. Click on Drop Down box to change Shade Styleto 75% transparent, then click “OK” button

17. Now the tribes are red and transparent

18. To undisplay a layer, uncheck the box next to it in file tree

19. Working with Labels The labels for the tribes are displayed because they have a check Click “Labels” tab for Labels File TreeIt works the same as Overlays File Tree

20. Double-click on an Item to customize it; click Apply to see how it looks even when the option box is open

21. Success

22. Importing Maps Click on Import -> Base Maps -> Shapefile

23. Click “Open” button

24. Find the file and click “Open” button

25. Have to convert because these don’t match If you need to convert the shapefile, click on “Convert” button

26. TEISS default for drawing its maps

27. Input your shapefile’s coordinate system parameters in here.The boxes will change depending on what you have to enter.Then click the “OK” button

28. These roughly match now. This is good. Click the “OK” button

29. If everything lines up right, you got the correct projection

30. Tips on Modifying the TEISS Map Interface • There is not an “Undo” button • When you click on the Apply button or the OK button, you have already saved the change to the map • If you make changes you do not like and want to go back to the defaults, there is a Default button for each layer

31. Exporting the Map • Option 1: Simple Map • From the TEISS menu, select Export, then Copy to File, then select the type of file • In the next screen, navigate to where you want to save the map and give it a name • Leave the defaults in the next screen

32. Exporting the Map (cont.) • Option 2: Map With More • From the TEISS menu, select File, then Print • Customize the map, the Preferences button has even more options • Click on the Save to File icon that looks like a computer disk

33. Exporting the Map (cont.) • Either of these files can be imported into documents • Select Insert from the menu, then selecting Picture, From File

34. Homework due in 5 days: • Modify the TEISS map to how you want it to look for your QAPP and written EI report • Export the map • Include the map in the Introduction of your EI • Complete the point source section of your Level 4 EI • If you are continuing to the next workshop, this section becomes part of the off reservation section of your Level 1, 2, or 3 EI • Email your EI to the instructors