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| • | Clip: clip 3dr file using a clip file |
| • | Stretch: stretch the value of pixels in the 3dr file into a new user-defined interval |
| • | Overlay: perform a set of overlay operations on two 3dr files |
| • | Filter: pass a user-defined filter over the 3dr file |
| • | Frequency: produce a list of the unique code occurrences and their frequency in a 3dr file |
| • | Color: assign a color palette to a 3dr file |
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