Environmental Engineering Reference
In-Depth Information
Fig. 2.16 Creating a new geodatabase is the first step when you start ArcMap v10. This screen
shows a new directory where we created a new file by selecting the new geodatabase icon (a small
grey round cylinder, often used as a database symbol). We then add this file and select OK in the
“Getting Started” window
To follow this example, you will need to use ESRI's ArcMap. In the new version
of ESRI's ArcGIS, ArcMap v.10 uses a default geodatabase that we will redefine.
To begin, you should click on the small folder icon near the bottom of the “Getting
Started” window and navigate to the Molera folder using the “Connect to Folder”
icon. Once the Molera folder is selected, you should click on the “New File
Database” icon and rename it as “Molera” (Fig.
2.16
) and click okay. Once this
file (geodatabase) is created, you can open the excel file and save the datasheet as a
comma delimited (“comma separated values” that is abbreviated as csv) file, which
can be done in any spreadsheet software and then add the csv file to the map, using
File
Add XY Data. You then will select the csv file and assign the X
direction as the “Easting” column, Y direction as “Northing” column and Z as the
“Elev”. You must be sure to assign the appropriate projected coordinate system
(Projected Coordinate System
Add Data
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WGS
1984 UTM Zone 10N.prj). ArcMap will give an error (warning) because there is no
object-ID field, but you can ignore the warning and proceed by clicking okay. After
clicking okay, you should be able to see points displayed on the map. The map
should then be saved in the newly created directory with an appropriate name (e.g.,
Molera). The next step will be to create a shape file, which is a specific file structure
UTM
WGS 84
Northern Hemisphere
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