Virtual Labs

Tools

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Extraction of Topographical features using DEM data

Choose difficulty:

Beginner

Intermediate

Advanced

The purpose of using Fill tool is

a: To fill the large sized voids in the raster Explanation

Explanation

b: To remove small imperfections in the raster Explanation

Explanation

c: To fill the medium sized voids in the raster Explanation

Explanation

d: To carryon radiometric correction to the raster Explanation

Explanation

Aspect is the

a: Maximum rate of change in pixel value from each pixel to its neighbours Explanation

Explanation

b: Rate of change of elevation for each pixel Explanation

Explanation

c: Minimum rate of change in pixel value from each pixel to its neighbours Explanation

Explanation

d: None of these Explanation

Explanation

The flow direction raster will be an input for the flow accumulation raster to generate the stream network.

a: True Explanation

Explanation

b: False Explanation

Explanation

Aspect is measured in ________.

a: Meters Explanation

Explanation

b: Feet Explanation

Explanation

c: Degree azimuth Explanation

Explanation

d: No unit Explanation

Explanation

________ should be the input file used in the tool to calculate the Flow Direction.

a: Flow accumulation raster Explanation

Explanation

b: Filled DEM Explanation

Explanation

c: Shapefile of the region Explanation

Explanation

d: Slope raster Explanation

Explanation

Community Links Sakshat Portal Outreach Portal FAQ: Virtual Labs

AGPL 3.0 & Creative Commons (CC BY-NC-SA 4.0)