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Le 04/03/2012 14:14, Ed Linde a écrit :
<blockquote
cite="mid:CAK4dkcWeE_aN_g6EO6bjcaCpsxSg63aZF-N+mVLeB7+fWBDhCg@mail.gmail.com"
type="cite">Hi All,
<div>Can someone help me understand a concept with the SRTM
raster. My understanding is that the raster can be thought of as
a uniform grid with each cell having dimension = "90m x 90m"
(for SRTM-1 dataset). Now I am just wondering if the elevation
values are 4 values at each vertex or boundary point of a cell?
or is it one elevation value for the 90x90 m^2 area covered by
the cell? I ask because if its the first option, then it would
mean that every point that falls in the cell has it's elevation
calculated using some sort of interpolation between the 4 corner
points of the cell to arrive at this point's altitude. Or do
several points that fall into this 90x90 cell get assigned the
same elevation value?</div>
<div>Would be great if I could get some help understanding this
concept about SRTM rasters.</div>
<div><br>
</div>
<div>Cheers,</div>
<div>Ed </div>
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</pre>
</blockquote>
Wouldn't that be a grid of 1°/1201 by 1°/1201 with 1201x1201
elevation value?<br>
Just a guess.<br>
Yves<br>
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