Frequently Asked Questions for Image Mangement workflows - Multispectral Satellite Imagery

Q : What type of imagery falls into this category?

A : ArcGIS 10.1 can work with a variety of formats for elevation data as listed in this Help topic. In this category, the workflows focus on the unique requirements of satellite data with 4 or more spectral bands. An example workflow for data from Landsat 8 is available for download in this ArcGIS Online Group, and future examples will be provided for other satellites in this category.

Q: : Do I need to program in Python to use this workflow?

A: Python programming is not required. Sample tools may be downloaded from this ArcGIS Online Group to provide examples of implementing the recommended workflows in Python. These tools may also be used in ArcGIS ModelBuilder.

Q: This workflow supports common band combinations such as color infrared, and band ratios such as NDVI, but can I define my own?

A: Yes. The Mosaic Dataset allows you to define your own function to combine different spectral bands, then export the function as a Raster Function Template (RFT.xml) file. See ArcGIS Help for more information on accessing the raster function template editor and editing function chain templates. After saving the .RFT.xml file, it may be applied as a server-side function on an image service exposing the multispectral data as demonstrated in the example script.

Q: If I have questions about this workflow, where can I get more information?

The workflows described in the Image Management Guidebook, and the samples available in ArcGIS Online provide detailed information. For any additional information and discussion, please refer to this post on the ArcGIS Imagery Forum where users will contribute ideas, questions, and answers regarding multispectral satellite imagery. For new posts related to the Image Management Workflows, please enter image_management and also workflow as tags that will allow others to search for related posts.