[pdal] [Greyhound] Updating fields

[Thomas Montaigu]

Thanks a lot, I’ll try it out and come back if I have more questions

Thomas

De : Connor Manning
Envoyé le :vendredi 19 janvier 2018 23:58
À : Connor Manning
Cc : Thomas Montaigu; pdal at lists.osgeo.org
Objet :Re: [pdal] [Greyhound] Updating fields

I've pushed new Entwine/Greyhound containers under the "alpine" docker tag - e.g. connormanning/greyhound:alpine.  These will be the new default "latest" images shortly.  As you've noticed, you'll need to add `"allowWrite": true` to your Greyhound configuration to use the GreyhoundWriter functionality.

For the PDAL GreyhoundWriter via Docker, you'll need the `pdal/pdal:master` image.

Here's also a sample script using a buffered-tile scheme with the GreyhoundWriter to run the SMRF ground classification algorithm over a dataset in many small pieces.  https://gist.github.com/connormanning/2b72aa3bab69f7105c6fc4e32935aeca

- Connor

On Fri, Jan 19, 2018 at 2:56 PM, Connor Manning <connor at hobu.co> wrote:
I'm currently in the process of updating all the Docker containers - the PDAL container has switched from Ubuntu to Alpine by default so I'm validating the images for the new Entwine/Greyhound containers before pushing them out.  That said, you are a bit early on this feature - expect things to potentially change a bit until new versions of Entwine/Greyhound are released with stable support (and updated development and administration docs) for these features.  I'll reply to this once the new images are pushed so you can try it out in the meantime.

- Connor

On Fri, Jan 19, 2018 at 2:40 PM, Thomas Montaigu <thomas.montaigu at laposte.net> wrote:
Hello,
 
I’ ve been trying Entwine + Greyhound this week and got something working very easily thanks to the dockers & documentation.
 
I would like to know if it is already possible to update fields of points using greyhound ?
>From the video of the conference at ‘FOSS4G’ I understand that , at that time updating field was not yet ready.
But I’ve seen that there is a Greyhound plugin for PDAL (that I’d maybe like to use to try  adding Greyhound support in CloudCompare).
 
Seeing that this plugin implements a GreyhoundWriter, I tried using the ‘write’ command but the server says:
«Caught /write not allowed », which I tried to fix by adding "allowWrite" : true in my config.json (I took the key by searching through the code),
but it did not change the error message .
 
My requests looked like this : 
 
url = http://ec2_blabblabla:8080/resource/entwine-data-pdlb
requests.put(url + "/write?schema:['Classification']", b" \x00\x00")
 
So I am a little bit early on this feature or misdoing something ?
 
Best regards,
Thomas

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