The MCHP GIS MANUAL - General Information

         

Introduction   Contents


 USING ArcGIS: 
   
1. Basic Use of ArcMap 
   Creating a Map 
   Data Frame Tools
   Data Frame Properties
   Tables and Charts
   Layout View
   Saving Map Documents
   Activity 1

2. Map Projections
   Projections
   UTM
   Datums
  
3. ArcCatalog 
   Basic Uses    
   
4. ArcToolBox 
   Basic Uses    
   
5. Adding Spatial Information
   Georeferencing
   Adding Non-Spatial Data
   Dbase Files
   Activity 2

6. Selecting Data
   By Graphics
   By Location
   Activity 3

7.  Exporting Maps
   Exporting
   Activity 4
  
 
FURTHER INFORMATION:
   General Information
   Data Sets

GENERAL INFORMATION

General Information:

What to ask for when getting data

Type of file:

  • ArcView Shape File (SHP) Make sure you get all the parts
  • ArcInfo transport file (E00)
  • CAD (DXF)
  • Personal Geodatabase

Make sure you get the projection, map units, datum, and appropriate scale information. Most of our data uses decimal degrees with NAD 27 or NAD 83. UTM projections with map units in meters for zone 14 are suitable for MB but generally we would rather project from decimal degrees. In addition, you will also need to make sure to get the original source of the data. This information can subsequently be created and/or stored in ArcGIS metadata through ArcCatalog.

If you get an unknown shape, coverage, or E00 file look for the .prj file or prj.adf file. These files can be read with a text editor such as Notepad and will give you an idea of the necessary projection information.

In some cases files will be posted as MIF (Map Info Transport files). These can be translated into ESRI formatted files if necessary but look for alternatives if possible. We do not have converters for other formats.

Presenting MB Data

Generally use UTM zone 14 using NAD 27 or NAD 83/WGS 84 (which ever is appropriate).

Albers Equal Area with the following criteria can also be used but this is a custom projection and should not be given projected to other people.

  • Central Meridian – 98.00
  • Standard Parallel 1 – 51
  • Standard Parallel 2 – 77
  • Latitude of Origin – 63

Spheroid

  • WGS84 (NAD83) for recent data (e.g. 2001 census)
  • Clarke1866 or GRS80 for older data (e.g. 1996 census)

More on Projections

http://www.gis.psu.edu/projection/

http://atlas.nrcan.gc.ca/site/english/learningresources/carto_corner/map_projections.html

Information on Schema files

http://msdn.microsoft.com/en-us/library/ms709353.aspx

Quick and Easy SCHEMA.INI (from: http://www.devx.com/tips/Tip/12566)

To create a SCHEMA.INI file for a text file quickly and easily, let the ODBC setup and drivers do it for you. Go to the Control Panel and start ODBC. Click on the Add button and select the Text driver. Click on the Options button and describe how to arrange the text file. If your text file has a header record, click on the Guess button, and the Column Names will be filled out for you. On the last screen, choose Cancel to avoid setting up the data source. Check the directory where the text file resides, and you'll find a new SCHEMA.INI file.

Defaults (Normal.mxt)

The default template (normal.mxt) can be found under the users profile under Windows.
C:\Documents and Settings\$USER\Application Data\ESRI\ArcMap\Templates

Data Sources

 

Introduction
Exporting Maps
NEXT
Data Sets

 

Contact: Charles Burchill       Telephone: (204) 789-3429

Manitoba Centre for Health Policy
Department of Community Health Sciences, University of Manitoba
4th floor Brodie Centre
408 - 727 McDermot Avenue
Winnipeg, Manitoba R3E 3P5       Fax: (204) 789-3910
Last modified on Thursday, 29-May-2008 15:53:49 CDT