raster-tutorial.pdf

Raster Tutorial

Raster Tutorial

Table of Contents

Introduction to the ArcGIS raster tutorial . . . . . . . . . . . . . . . . . . . . . . . . . 3

Exercise 1: Creating a mosaic dataset . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Exercise 2: Creating multiple mosaic datasets from a single mosaic dataset . . . . . . . . . . . 8

Exercise 3: Creating and using a mosaic dataset with an altering viewpoint . . . . . . . . . . . . 13

Exercise 4: Creating a mosaic dataset using a raster type for orthorectification . . . . . . . . . . 18

Exercise 5: Color balancing a mosaic dataset . . . . . . . . . . . . . . . . . . . . . . . 22

Exercise 6: Color balancing a raster catalog . . . . . . . . . . . . . . . . . . . . . . . . 27

Exercise 7: Adding a satellite sensor raster type to a mosaic dataset . . . . . . . . . . . . . . 32

Raster Tutorial

Introduction to the ArcGIS raster tutorial

The exercises in this tutorial walk you through steps with sample data to build simple mosaic datasets, as well

as slightly more complex ones, and help you understand some of the decisions you need to consider for your

data and the uses of the mosaic dataset. There are also a few exercises that teach you about using a raster

catalog and raster datasets.

Tutorial data

By default, the data is installed from the tutorial DVD in C:\arcgis\ArcTutor\Raster\Data.

Acknowledgments

The data provided in the Landsat_p114r75 folder comes from Landsat.org/Tropical Rain Forest

Information Center, a member of NASA's Federation for Earth Science Information Partners (ESIP) at

Michigan State University ( http://www.landsat.org/ ) .

The data provided in the Orthos folder comes from the Texas Geographic Information Council

( http://www.tnris.state.tx.us/ ).

Exercises

• Exercise 1 : Creating a mosaic dataset

• Exercise 2 : Creating multiple mosaic datasets from a single mosaic dataset

• Exercise 3 : Creating and using a mosaic dataset with an altering viewpoint

• Exercise 4 : Creating a mosaic dataset using the MATCH-AT raster type for orthorectification

• Exercise 5 : Color balancing a mosaic dataset

• Exercise 6 : Color balancing a raster catalog

• Exercise 7 : Adding a satellite sensor raster type to a mosaic dataset

Raster Tutorial

Exercise 1: Creating a mosaic dataset

In this exercise, you will be creating a mosaic dataset containing GeoTIFF

raster dataset files using the geoprocessing framework in ArcMap.

Complexity:

Beginner

Data Requirement:

ArcGIS Tutorial Data Setup

Data Path:

C:\arcgis\ArcTutor\Raster\Data

Goal:

Create a basic mosaic dataset.

This exercise does not rely on any previous exercises.

Before you begin, it is assumed that you have installed the tutorial at

C:\arcgis\ArcTutor\Raster\Data. If not, make the appropriate path changes

throughout this tutorial so it works properly for you.

Start ArcMap

Steps:

1. Start ArcMap by clicking Start > All Programs > ArcGIS > ArcMap 10.

2. Click Cancel on the ArcMap - Getting Started window.

This window may not open if you've previously opted not to show it.

Note: You will be setting the default map document's geodatabase later

in this exercise.

Create a file geodatabase

If you have already created ImageGDB in another exercise, you can skip this section of steps.

Steps:

1. Click the Catalog window button on the Standard toolbar.

This opens the Catalog window.

2. In the Location text box, type C:\arcgis\ArcTutor\Raster and press ENTER.

This location is added to the Catalog tree under the Folders Connection heading.

If your tutorial data was installed in a different location, alter the path according to your

installation location.

3. Right-click the Raster folder and click New > Folder .

4. Name the folder Exercises .

5. Right-click the Exercises folder and click New > File Geodatabase .

6. Rename the new file geodatabase ImageGDB .

Set the default geodatabase

Each map document has a default geodatabase, which is the home location for the spatial content of your

map. This location is used for adding datasets and saving resulting datasets created by various editing

and geoprocessing operations.

Learn about the default geodatabase

Steps:

Raster Tutorial

1. Right-click the ImageGDB geodatabase in the Catalog window and click Make Default

Geodatabase .

Create a new mosaic dataset

Steps:

1. Right-click ImageGDB in the Catalog window, point to New , then click Mosaic Dataset .

This opens the Create Mosaic Dataset tool dialog box.

2. Type Amberg in the Mosaic Dataset Name text box.

3. Click the Coordinate System browse button .

4. Click Select .

5. Double-click the Projected Coordinate Systems folder, double-click the National Grids folder,

double-click the Germany folder, choose Germany Zone 4.prj, then click Add .

6. Click OK to close the Spatial Reference Properties dialog box.

7. Click OK on the Create Mosaic Dataset tool dialog box.

The reporter window opens.

8. Once the process is complete, click Close .

The Amberg mosaic dataset is created in the geodatabase and added to the ArcMap table of

contents. This is an empty mosaic dataset. You will be adding raster datasets to it in the next

steps.

When the mosaic dataset is added to the table of contents, it is added as a mosaic layer, which is

essentially a special group layer. The top level has the name of the mosaic dataset--Amberg. There are also

empty Boundary, Footprint, and Image layers.

Add rasters to the mosaic dataset

Steps:

1. Right-click the Amberg mosaic dataset in the Catalog window and click Add Rasters .

This opens the Add Rasters To Mosaic Dataset tool.

2. In the Raster Type list, choose Raster Dataset .

3. Click the drop-down arrow and click Workspace .

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: