Satellite Observations in Science Education

Feature Finder


This RCO is used when an instructor has a set of images containing features which may require some background knowledge or previous training to recognize. For example, being able to distinguish an iceberg from clouds in a satellite image created by sensing energy at infrared wavelengths.

The instructor will gather a set of images, and for each must first create a second, "answer" image with the feature in question highlighted. This is needed to show users the correct answer after an attempt has been made to identify the feature. The instructor can use common image manipulation applications to create these, such as Photoshop or The GIMP.

The sample XML file provided below must be populated with appropriate data (filenames, ancillary information about the images, etc.) and placed in the same location as the HTML file used to access and present this RCO.

Note this RCO uses another RCO as a sub-component. It uses the Info Panel RCO to display tips, instructions, or other information relevant to the learning activity designed around this RCO. Please review the online documentation for information on how to configure and use Info Panel.

Example usage:

This link will bring up a separate browser window with a page that uses this RCO.

Snapshot of sample use:

Example use of Feature Finder RCO

How to use

  1. Create an HTML file which will reference and load this RCO. Cut-and-paste the sample applet tag below and insert at the location in the HTML file you want to use the RCO.
  2. Create an XML file with input data based on the example below.
  3. Create an XML file for the Info Panel subcomponent.
  4. Download the RCO by right-clicking the download link below and choosing "Save Link Target As..."
  5. Edit the applet tag parameters to reference your new file names, and test.

Create your XML file one of two ways:

  Edit this sample Feature Finder XML file

  Generate your Feature Finder XML automatically with this link.

  Edit this sample Info Panel XML file

  Generate your Info Panel XML automatically with this link.

This RCO bundled as a jar file

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