"How to create a subset using ERDAS Imagine 2021?"
To create a subset using ERDAS Imagine 2021, follow these steps:
Launch ERDAS Imagine 2021 on your computer.
Open the image or dataset from which you want to create a subset. This could be a satellite image, aerial photograph, or any other raster dataset.
Navigate to the "Raster" menu or toolbar and select the "Subset" option.
In the Subset dialog box, specify the region of interest (ROI) for your subset. You can define the subset by specifying the coordinates of the desired area, selecting it interactively on the map, or using other spatial referencing methods.
Configure the subset options based on your requirements. These options may include selecting specific bands or layers, specifying the subset dimensions, defining the subset using a percentage of the original image, or applying spatial or attribute filters.
Preview the subset area to ensure it accurately represents your intended subset. Use the zoom and pan tools to navigate and inspect the subset region.
Once you are satisfied with the subset configuration, click on the "OK" or "Apply" button to create the subset.
Save the subset as a new raster file by selecting the appropriate file format from the "File" menu or toolbar. Provide a name and location for the subset file, and click on the "Save" button.
By following these steps, you can successfully create a subset using ERDAS Imagine 2021.