<p>NASA GLAS Lidar Data can be downloaded <a href="http://nsidc.org/data/icesat/data.html" rel="nofollow noreferrer">here</a>.</p>

<p>I cannot find (or perhaps understand) the answer to my question on the icesat/glas page.  Lidar data can be provided as points (las) or raster (dem), though I believe either could be packaged as HDF5 (what they offer).  They list a number of parameters which makes it sound like it's points, but then they compare results with an SRTM dem.  </p>

<p>Does anybody know what you get with this download? </p>

CC BY-SA 3.0
2016-12-02T14:14:04.203Z
*my question on the icesat/glas page.*  ??
Jan Doggen
CC BY-SA 3.0
2015-01-15T17:01:47.377Z
Can you provide a link to the specific dataset your are wondering about?
casey
CC BY-SA 3.0
2015-01-15T22:31:09.577Z
http://nsidc.org/data/icesat/data.html
J Kelly
CC BY-SA 3.0
2015-01-15T22:31:37.853Z
Now I realize the data size (only a few MB) tells me it's all raster.
J Kelly
CC BY-SA 3.0
2015-01-15T22:33:09.257Z
@casey, you don't know if there is GLAS xyz data available anywhere?
J Kelly
CC BY-SA 3.0
2015-01-16T00:16:14.497Z
You might want to put this question to http://gis.stackexchange.com/
haresfur
CC BY-SA 3.0
2015-01-16T01:46:05.247Z
@JKelly Which dataset on that page? There are many.
casey
CC BY-SA 3.0
2015-01-16T12:32:45.107Z
Right.  I don't know which dataset, because I'd want xyz points and can't identify which might be that (currently thinking none are).
J Kelly
CC BY-SA 3.0
2015-01-22T03:21:59.473Z
Raster surely represents (grid) points, anyway? Even if it's points that represent areas...
naught101
CC BY-SA 3.0
2015-01-22T12:35:23.043Z
Yeah, but they're aggregated.  You can't, for example, get a meaningful point density or height percentiles over a region.
J Kelly
<remote-sensing><land-surface><data-formats>
NASA GLAS Lidar Data Format
J Kelly
# NASA GLAS Lidar Data Format

(Asked by: username_0 on 2015-01-15)

NASA GLAS Lidar Data can be downloaded [here](http://nsidc.org/data/icesat/data.html).

I cannot find (or perhaps understand) the answer to my question on the icesat/glas page. Lidar data can be provided as points (las) or raster (dem), though I believe either could be packaged as HDF5 (what they offer). They list a number of parameters which makes it sound like it's points, but then they compare results with an SRTM dem.

Does anybody know what you get with this download?

**Tags:** remote-sensing, land-surface, data-formats

> **Comments:**
> **username_2**: Can you provide a link to the specific dataset your are wondering about?  
> **username_0**: http://nsidc.org/data/icesat/data.html  
> **username_0**: Now I realize the data size (only a few MB) tells me it's all raster.  
> **username_0**: @username_2, you don't know if there is GLAS xyz data available anywhere?  
> **username_3**: You might want to put this question to http://gis.stackexchange.com/  
> **username_2**: @username_0 Which dataset on that page? There are many.  
> **username_0**: Right.  I don't know which dataset, because I'd want xyz points and can't identify which might be that (currently thinking none are).  
> **username_4**: Raster surely represents (grid) points, anyway? Even if it's points that represent areas...  
> **username_0**: Yeah, but they're aggregated.  You can't, for example, get a meaningful point density or height percentiles over a region.  
> **username_1**: *my question on the icesat/glas page.*  ??  

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## 0 answers

