Raster Tools Flashcards
1
Q
Why would you reclassify data?
A
- replace values based on new info
- group certain values together
- transform values to a common scale
2
Q
What are some ways to reclassify data?
A
Individual values: lookup, reclassify
Range of values: reclass by table, reclassify
Intervals: slice
3
Q
How do you treat a location with “NoData”
A
- always return nodata for that specified location when adding two rasters together
- ignore nodata and compute withe available
4
Q
Define euclidean distance
A
The hypotenuse between the center of the source cell to the center of the surrounding cells - shortest distance
5
Q
Explain the conditional tool
A
Performs an if/else evaluation on each of the input cells of an input raster
Output: (input raster, true raster, fasle raster, expression)
6
Q
What do raster with real values not have?
A
Attribute table
