GRID Data: In and Out

1
GRID Data In and Out

• FE423 - January 20, 2000

2
OUTLINE

• Getting data into GRID
• Managing GRID data
• Displaying grids
• GRID data model and data structure

3
Gridding polygons, lines, points
4
Getting Data into Grid

• soildepth polygrid(soils,depth,,,30)
• roadwidth linegrid(roads,width)
• bear_scat pointgrid(scatpoints)
• cell size setcell/setwindow or define

5
Getting data out of grid

• Gridpoly
• gridline
• gridpoint
• gridascii
• gridimage

6
Managing data in GRID

• Re-sampling grids
• new grid sizes
• rotating
• Merging grids

7
Displaying Grids
display 9999 Reclassification 1 3 4 1 lt value
lt 3 values remapped to 4 3 5 6 3 lt value lt
5 values remapped to 6 5 7 8 5 lt value lt
7 values remapped to 8 Stretching Grid Values
8
GRID data structure