Duck97 data

Helena Mitasova, Dave Pierson, Tom Drake
North Carolina State University

Workplace document

Illustration of possibilities to process and visualize the data with GRASS5

• original data as 5m resolution raster
• original data as 1m resolution raster:
• line19 and 20 displayed next to each other
• and in their given overlapping position
• interpolated 1m resolution surface using RST
• with tension=600 (high), smoothing =1
• tension=200 (low), smoothing=1
• line 19, 09/30 and 10/04:
• interpolated and smooted surfaces by RST
• slope
• profile curvature
• sites
• visual conmparison using cutting plane
• statistical standard deviation of  values within the 3x3 neighborhood (rounded to the nearest integer).