<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<p>I ran into this error awhile back compiling everything
(entwine/pdal/liblaszip/...) from source on Linux. I can't
remember exactly how I got past it, but I think it was a version
mismatch issue between pdal and LASZIP.</p>
<p>Looks like this was solved here:<br>
</p>
<p><a class="moz-txt-link-freetext" href="https://github.com/PDAL/PDAL/issues/2329">https://github.com/PDAL/PDAL/issues/2329</a><br>
</p>
<div class="moz-cite-prefix">On 2/19/19 2:27 AM,
<a class="moz-txt-link-abbreviated" href="mailto:jrmorreale_ml@enoreth.net">jrmorreale_ml@enoreth.net</a> wrote:<br>
</div>
<blockquote type="cite" cite="mid:af2-5c6bbe00-3-7d66ad80@261947940">Hi
Connor,<br>
<br>
Since you are mentionning the conda env, I did a try with its pdal
version :<br>
C:\>pdal translate --writer "las"
--writers.las.compression="laszip" --writers.las.minor_version=4
--writers.las.a_srs="EPSG:2154" --input "680000_7058000.las"
--output "680000_7058000_test.laz"<br>
PDAL: writers.las: legacy flags and extended flags are not
identical<br>
<br>
The pdal 1.8.0 runtime provided by osgeo4w works fine on this
file, without printing this error.<br>
<br>
<br>
Le Lundi, Février 18, 2019 21:13 CET, Connor Manning
<a class="moz-txt-link-rfc2396E" href="mailto:connor@hobu.co"><connor@hobu.co></a> a écrit:<br>
<blockquote type="cite">
<div dir="ltr">This looks specific to the Windows/Conda
environment, since both the LAS/LAZ file you posted work fine
for me. It looks like Entwine isn't properly able to open
your files at all for some reason, considering the error
message stating that the LASF file signature is incorrect. I
think the error messages stem from a bad interpretation of the
file data rather than the data itself, though I'm not sure why
this would be the case. Perhaps there is a permissions issue
of some sort, or a newly introduced bug in Entwine's file
handling on Windows.</div>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon, Feb 18, 2019 at
12:37 PM Connor Manning <<a href="mailto:connor@hobu.co"
moz-do-not-send="true">connor@hobu.co</a>> wrote:</div>
<blockquote class="gmail_quote">
<div dir="ltr">Oh I missed that you added links to the files
in your original message. I'll see if I can discover
anything from them. If your data is working fine in PDAL
but not Entwine though, you may still prefer to submit
this as an issue on Entwine.</div>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon, Feb 18, 2019 at
12:23 PM Connor Manning <<a target="_blank"
href="mailto:connor@hobu.co" moz-do-not-send="true">connor@hobu.co</a>>
wrote:</div>
<blockquote class="gmail_quote">
<div dir="ltr">
<div dir="ltr">If you submit this as an issue on
Entwine (<a target="_blank"
href="https://github.com/connormanning/entwine/issues"
moz-do-not-send="true">https://github.com/connormanning/entwine/issues</a>)
and upload samples of the problematic files, or
email them to me, I will take a look.</div>
<div dir="ltr"> </div>
<div>- Connor</div>
</div>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon, Feb 18, 2019
at 12:20 PM Jean-Roc Morreale (ml) <<a
target="_blank"
href="mailto:jrmorreale_ml@enoreth.net"
moz-do-not-send="true">jrmorreale_ml@enoreth.net</a>>
wrote:</div>
<blockquote class="gmail_quote">Hi Andrew, thank you
for your reply.<br>
<br>
Unfortunatly, our Windows system configuration
prevents me to setup a<br>
msvc build toolchain so I will wait for the next
release on this point.<br>
<br>
About the LAS missing signature, for now entwine
build seems to be the<br>
only tool blocked by it as I have been using many
pdal tools an others<br>
(lastools, cloudcompare, fme, potreeconverter) in
the last past weeks.<br>
My first reaction was to convert the las files to
laz using pdal<br>
stating minor_version=4 in the hope it would
automagically solves it.<br>
<br>
regards,<br>
jean-roc<br>
<br>
<br>
Le lundi 18 février 2019 à 10:04 -0500, Andrew Bell
a écrit :<br>
> The first error (about legacy flags) is due to
an issue in the LASzip<br>
> API code. You can see this issue<br>
> <a rel="noreferrer" target="_blank"
href="https://github.com/PDAL/PDAL/issues/2320"
moz-do-not-send="true">https://github.com/PDAL/PDAL/issues/2320</a>
for details. You can build<br>
> the 1.8-maintenance branch of PDAL to eliminate
the error.<br>
><br>
> The file signature error is what it says. LAS
files have a signature<br>
> at the beginning of the file. If the signature
isn't found, your LAS<br>
> file is corrupt.<br>
><br>
> I'm not sure why you'd get a "too many files"
open error. I think<br>
> this is an issue in entwine.<br>
><br>
> On Mon, Feb 18, 2019 at 9:49 AM <a
target="_blank"
href="mailto:jrmorreale_ml@enoreth.net"
moz-do-not-send="true">jrmorreale_ml@enoreth.net</a>
<<br>
> <a target="_blank"
href="mailto:jrmorreale_ml@enoreth.net"
moz-do-not-send="true">jrmorreale_ml@enoreth.net</a>>
wrote:<br>
> > Hi,<br>
> ><br>
> > I am trying to build an EPT with entwine
2.0 (conda) on a<br>
> > classified lidar cloud (1220 tiles,
22billion points) but I did not<br>
> > succeed in getting a usable result.<br>
> ><br>
> > The command used is :<br>
> > entwine build --srs "EPSG:2154" --threads
"4" --dataType "laszip"<br>
> > -i input_dir -o output_dir<br>
> ><br>
> > The errors are<br>
> > * Exception in pool task: writers.las:
legacy flags and extended<br>
> > flags are not identical<br>
> > * During input_xx.laz: readers.las: File
signature is not 'LASF',<br>
> > is this an LAS/LAZ file?<br>
> > * Unable to open stream for 'input_xx.laz'
with error 'Too many<br>
> > open files'<br>
> ><br>
> > The last error is only shown when trying
to work on the 1220 files<br>
> > at once. The attempts have been made on
the original terrascan<br>
> > tiles and on pdal translated laz tiles,
the generated ept-data<br>
> > output is empty laz files.<br>
> ><br>
> > pdal info --all of 1 laz tiles<br>
> > <a rel="noreferrer" target="_blank"
href="https://gist.github.com/Jean-Roc/bb045bd1e01edbadf7f49e97df0d2568"
moz-do-not-send="true">https://gist.github.com/Jean-Roc/bb045bd1e01edbadf7f49e97df0d2568</a><br>
> ><br>
> > pdal info all on the same tile but on the
original las file from<br>
> > terrascan<br>
> > <a rel="noreferrer" target="_blank"
href="https://gist.github.com/Jean-Roc/50145b3b7a0b2b432f0b2956807eb181"
moz-do-not-send="true">https://gist.github.com/Jean-Roc/50145b3b7a0b2b432f0b2956807eb181</a><br>
> ><br>
> > las sample<br>
> > <a rel="noreferrer" target="_blank"
href="https://dl.lillemetropole.fr/file.php?h=Rc3bb7eeace8c2923b565e2b7ba7f2370"
moz-do-not-send="true">https://dl.lillemetropole.fr/file.php?h=Rc3bb7eeace8c2923b565e2b7ba7f2370</a><br>
> ><br>
> > laz sample<br>
> > <a rel="noreferrer" target="_blank"
href="https://dl.lillemetropole.fr/file.php?h=R9e3f147ea2f928b9f4437697faad3e51"
moz-do-not-send="true">https://dl.lillemetropole.fr/file.php?h=R9e3f147ea2f928b9f4437697faad3e51</a><br>
> ><br>
> > log of entwine build on 5 tiles (run 5)<br>
> > <a rel="noreferrer" target="_blank"
href="https://gist.github.com/Jean-Roc/ce231d6770fdaafa5bba307d79c0e992"
moz-do-not-send="true">https://gist.github.com/Jean-Roc/ce231d6770fdaafa5bba307d79c0e992</a><br>
> ><br>
> > log of entwine build with on 1220 tiles<br>
> > <a rel="noreferrer" target="_blank"
href="https://gist.github.com/Jean-Roc/29fcffa60886168e73d0e7146e897801"
moz-do-not-send="true">https://gist.github.com/Jean-Roc/29fcffa60886168e73d0e7146e897801</a><br>
> ><br>
> > Could you point to the mistake(s) I've
made ? My aim is to publish<br>
> > our data online, the latest usgs example
is a great incentive.<br>
> ><br>
> > Regards,<br>
> > Jean-Roc Morreale
_______________________________________________<br>
> > pdal mailing list<br>
> > <a target="_blank"
href="mailto:pdal@lists.osgeo.org"
moz-do-not-send="true">pdal@lists.osgeo.org</a><br>
> > <a rel="noreferrer" target="_blank"
href="https://lists.osgeo.org/mailman/listinfo/pdal"
moz-do-not-send="true">https://lists.osgeo.org/mailman/listinfo/pdal</a><br>
><br>
><br>
<br>
_______________________________________________<br>
pdal mailing list<br>
<a target="_blank"
href="mailto:pdal@lists.osgeo.org"
moz-do-not-send="true">pdal@lists.osgeo.org</a><br>
<a rel="noreferrer" target="_blank"
href="https://lists.osgeo.org/mailman/listinfo/pdal"
moz-do-not-send="true">https://lists.osgeo.org/mailman/listinfo/pdal</a></blockquote>
</div>
</blockquote>
</div>
</blockquote>
</div>
</blockquote>
<br>
<br>
<br>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
pdal mailing list
<a class="moz-txt-link-abbreviated" href="mailto:pdal@lists.osgeo.org">pdal@lists.osgeo.org</a>
<a class="moz-txt-link-freetext" href="https://lists.osgeo.org/mailman/listinfo/pdal">https://lists.osgeo.org/mailman/listinfo/pdal</a></pre>
</blockquote>
</body>
</html>