GIS1: Lab

Department of Geography & Urban Planning

Instructor: Mohsin A. Abbasi

 

Exercise2: Exploring Spatial Data formats- ArcCatalog

 

This exercise is designed to introduce you to the ArcCatalog.  You will conduct the following:

 

What is ArcCatalog?

 

·      The ArcCatalog window consists of:

-          Catalog display

-          Catalog tree and,

-          several toolbars

 

ArcCatalog is similar to the Windows “explorer”. It is a tool for navigating through your GIS datasets. ArcCatalog has been specially designed for use with spatial data.

You have to download data from internet and unzip it before starting the exercise. Go to http://downloads.ddti.net/MadisonOH/ and then click on “2000 Comprehensive Plan”. When ask to save, save it to the C or D drive with folder name GIS1data. Extract using WinZip and save in the same folder.

 

1) Connecting to the Folder: Click on connect to the folder icon, for an easy data access. You can connect to folder using the icon in the next figure.

 

Once the pop up window is opened click on C or D and go to GIS1data folder you just created. You will see that a new connection is made in the catalog. You can also disconnect it by clicking on the disconnect folder button.

 

2) Work with the Preview tab: In ArcCatalog you can easily preview both spatial datasets, and the attribute data associated with them

 

In the bottom of the preview Tab you can easily see geography preview or table preview.

Navigate to the folder where you saved the data and see the data. When previewing spatial features with ArcCatalog, the geographic features provide tools to zoom and pan through the view. Practice zooming and panning the data.

Use Preview and select Table from the preview drop-down list to display attribute table.

 

3) Exploring Metadata tab. Metadata provides technical information about a data set. It includes:

  1. Description tab: provides general information about the data
  2. Spatial tab: provides information about the coordinate system and boundaries of the data.
  3. Attribute tab: provides information about the attributes of the data.

 

 

 

 

 

4) Use of ArcCatalog to add a new file type

If you want to create a new layer in ArcMap, you have to make a new file in ArcCatalog.

From catalog “File” got to new and then select the type of file for example shapefile. Click on shapefile. As shown below:

 

Create a new shapefile dialog box will open as shown below:

And will ask you to give name and feature type for the new shapefile. In name write "Building" and in Feature Type click on polygon. A new shapefile will be added in the ArcCatalog in the folder you have created with the name of GIS1data. Similarly add new shapefiles with name of "Road" with Feature Type as polyline and "Poles" with Feature type as point. All the shapefiles will be added in the GIS1data folder. You will add this file to the ArcMap as stated in next step.

 

5) Adding data from Catalog to ArcMap

Launch ArcMap tool from Catalog. Then click a new empty map. Then click OK.

Resize the ArcMap and Catalog application windows as needed so you can see both of them on the screen at the same time as shown below

From ArcCatalog click on the shapefiles of building, road and poles you just created and drag and drop the file into ArcMap display area or in table of contents. You will notice that layers will be added in the table of contents.

You will not be able to see the buildings, roads and poles maps as they do not have any data with them.

You will learn populating the database in next exercises. 

 

 

End of Exercise.