Source
The NED dataset is a compilation of data from a variety of existing high-precision datasets such as LiDAR data (see also National LIDAR Dataset - USA), contour maps, USGS DEM collection, SRTM and other sources which were reorganized and combined into a seamless dataset, designed to cover all the United States territory in its continuity.
Read more about this topic: National Elevation Dataset
Famous quotes containing the word source:
“Dear sensibility! source inexhausted of all that’s precious in our joys, or costly in our sorrows!... eternal fountain of our feelings!—’tis here I trace thee—and this is thy divinity which stirs within me ...—all comes from thee, great—great SENSORIUM of the world!”
—Laurence Sterne (1713–1768)
“If I have been the source of pain, O God;
If to the weak I have refused my strength;
If, in rebellion, I have strayed away;
Forgive me, God.”
—Janet W. May (20th century)
“If, for instance, they have heard something from the postman, they attribute it to “a semi-official statement”; if they have fallen into conversation with a stranger at a bar, they can conscientiously describe him as “a source that has hitherto proved unimpeachable.” It is only when the journalist is reporting a whim of his own, and one to which he attaches minor importance, that he defines it as the opinion of “well-informed circles.””
—Evelyn Waugh (1903–1966)