[pdal] PDAL and OpenLayers

[Roger Bedell]

Hello Eran,
Another possibility is to create DEM files from the LIDAR data, then use
GDALDEM to create hillshaded tiles. I'm not exactly clear how to create the
DEM files however...

One you have DEM files, I wrote a tool that can create a seamless
hillshaded layer for GeoServer, then it is served up to OpenLayers the
usual way via GeoServer.

http://rasternormalizer.codeplex.com/

Here is the result:

http://204.62.18.181/OGI/search.aspx?mapcenterlon=-97.670532226558&mapcenterlat=34.802782432797&mapscale=11&Layers=58d1fa5c-6eb4-4b95-9f42-69cd7277e15d%2C4b945341-bc66-4c09-9df4-26fbb58e4a5b%2C&maptype=OLMap

Roger





On Wed, Nov 13, 2013 at 5:20 AM, Eran Nevo <eran at utilis.co.il> wrote:

> Yes , it must be run through browser
>
> On 13 בנוב 2013, at 03:10, Chris Foster <chris.foster at roames.com.au>
> wrote:
>
> Does it need to run in a browser?  If not, I've been working on a
> desktop-based lidar point cloud viewer which might help you out - see
> http://c42f.github.io/displaz.  I'm close to a 0.2 release which will
> include a binary installer for windows.
>
> Cheers,
> ~Chris
>
> On 13 November 2013 01:26, Eran Nevo <eran at utilis.co.il> wrote:
>
> I'm looking for some kind of lidar viewer
>
>
> On 12 בנוב 2013, at 17:15, "Michael P. Gerlek" <mpg at flaxen.com> wrote:
>
>
> Eran-
>
>
> The sheer volume of point cloud data, as Howard says, makes it very hard to
>
> display in a traditional web browser system, e.g. OpenLayers fed by JSON.
>
> You'll need to find a way to reduce the point count in a smart way - like
>
> feeding out a LOD (level of detail) algorithm.
>
>
> Two or three years ago, people started looking for good ways to do this.
>
> There might be an open source solution by now, but it would require
>
> something more heavyweight than just OpenLayers.
>
>
> _mpg
>
>
> On Nov 12, 2013, at 7:06 AM, Eran Nevo <eran at utilis.co.il> wrote:
>
>
> Oh , I'm looking for open source solution to show lidar on web application
>
>
> On 12 בנוב 2013, at 16:40, Howard Butler <howard at hobu.co> wrote:
>
>
>
> On Nov 11, 2013, at 12:21 PM, Eran Nevo <eran at utilis.co.il> wrote:
>
>
>
>
> Hi there ,
>
>
> Can anyone point me to an example how to implement PDAL with OpenLayers ?
>
>
> I have LAS file and PostGIS db with points in them.
>
>
> Want to try PDAL.
>
>
>
> OpenLayers is a web JavaScript technology. PDAL is a data translation
>
> software focused on transformations from one format to another. You could
>
> try using PDAL to export point cloud data to GeoJSON (using
>
> drivers.text.writer) and importing that into an OpenLayers map in some way.
>
> You are very likely to overwhelm any browser, however, with any significant
>
> amount of point cloud data.
>
>
> Howard
>
>
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-- 
Roger Bedell
Coordinate Solutions Inc.
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