Step-by-Step Guide to Mosaic Rasters in ArcGIS Pro

In this tutorial, we will explore how to combine two separate raster images into a single seamless image using the Mosaic tool in ArcGIS Pro. This process is essential for creating comprehensive datasets from multiple images, making it easier for GIS analysts to visualize and analyze geographic information.

Step 1: Prepare Your Workspace

First, ensure you have two separate images that you want to combine. For this tutorial, we will use two images located in California. You can access your images in the ArcGIS Pro environment.

Step 2: Open the Mosaic Tool

Navigate to the Analysis tab in ArcGIS Pro and click on the Tools button.

Step 3: Search for the Mosaic Tool

In the search bar, type “Mosaic”. You will see two options: the Mosaic geoprocessing tool and the Mosaic to New Raster tool.

Step 4: Select the Right Tool

For this tutorial, choose the “Mosaic to New Raster” tool. This option allows you to create a new raster dataset without altering your existing images.

Step 5: Input Your Raster Images

In the tool interface, select your first image and then your second image. Ensure you have both images ready to combine.

Step 6: Specify Output Parameters

Next, specify the output folder for your new raster dataset. Name your dataset (e.g., “mosaic.tiff”) and configure your pixel type and other settings as needed.

Step 7: Run the Tool

Click the Run button to execute the tool. Depending on the size of your images, this process may take some time.

Step 8: Check the Results

Once the tool has completed, check the results by turning off the original images. You should see a new mosaic raster dataset that combines both images.

FAQs

• What is the Mosaic tool used for? The Mosaic tool is used to combine two or more raster datasets into a single raster, allowing for more comprehensive analysis and visualization.
• Can I use this tool for more than two images? Yes, the Mosaic tool can combine multiple raster images at once, not just two.
• Will using the Mosaic tool damage my original images? No, using the “Mosaic to New Raster” tool creates a new dataset without altering the original images.