You are given the following information on a 1 arc-second (30-meter) DEM: How ma
ID: 234356 • Letter: Y
Question
You are given the following information on a 1 arc-second (30-meter) DEM:
How many rows does the DEM have? How many columns does the DEM have? And, what are the UTM coordinates at the center of the (row 1, column 1) cell?
You are given the following information on a 1 arc-second (30-meter) DEM:
UTM coordinates in meters at the lower-left corner: 560635, 4816399 UTM coordinates in meters at the upper-right corner: 570595, 4830380How many rows does the DEM have? How many columns does the DEM have? And, what are the UTM coordinates at the center of the (row 1, column 1) cell?
Explanation / Answer
If a DEM has 1 arc-second (30 meter) grid and with following UTM Coordinates
UTM coordinates in meters at the lower-left corner: 560635, 4816399
UTM coordinates in meters at the upper-right corner: 570595, 4830380
Then,
The DEM has 466 rows
The DEM has 332 columns
The UTM coordinates at the Center of the (row 1, column 1 ) cell are
565617 4823389
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