Hi John,
Yes I'm trying to import classified DWEL points to spd and take advantage
of its functions rather than writing a lot of code by myself. I just need
to put all points into projection bins and get the mode of class in a
projection bin. But we do have cases that more than one class in a pulse,
i.e. multi-return of the same class. Right now I'm going to write a python
code to do the projection of mode of point class directly from points.
Thanks for sharing the spd importer of DWEL points. Now I have a python
code that can merge two point clouds at the two wavelengths together that
gives us a single dual-wavelength point cloud. So we have multiple
intensities values. I'll try the spd importer later and try to make some
change to import double intensities.
Thanks,
Zhan.
On Fri, Feb 6, 2015 at 3:39 AM, John Armston <john.arms...@dsitia.qld.gov.au
> wrote:
> Hi Zhan,
>
>
>
> the -x option in spdtranslate is for spatially indexing a pulse in a 2D
> Cartesian grid, which requires one location along the path of a laser beam
> to index by. This is typically the location of the first or last return
> (point). To spatially index by class would not work if none or >1 of the
> points within a pulse are of that class.
>
>
>
> You can create an image of the mode of point class categories using the
> spdmetrics command, or the spdpy2 Python bindings. Examples of using spdpy2
> are in the SPDLib source under ngpython/tests.
>
>
>
> cheers,
>
> John.
>
>
>
> p.s. Is this DWEL data you’re trying to import? The current schema method
> for importing ASCII treats each point as belonging to a separate laser shot
> – i.e. pulse information is lost. Is that right Pete? If so best to use the
> Python bindings to write a custom importer – we’ve done one for OzDWEL
> here:
> https://bitbucket.org/qdermrsc/tlsrepo/src/9b7f0f94662f/tlsiig_brisbane/converters/dwel/?at=default
>
>
>
>
>
>
>
> *From:* Zhan Li [mailto:zhanli1...@gmail.com]
> *Sent:* Friday, 6 February 2015 4:24 PM
> *To:* Daniel Clewley
> *Cc:* spdlib-develop
> *Subject:* Re: [spdlib-develop] where is the function of hemisherical
> projection
>
>
>
> Hi Dan, Pete,
>
>
>
> Thanks a lot for all the helps! I now run the spdtranslate correctly. But
> may I suggest one thing about the -x option, index method? As
> multi-spectral lidar emerging, we can classify each point potentially. Even
> with single-wavelength full-waveform data, we can classify with pulse
> shape. I think there are some people like me that need to project a
> classified points to an image. And projection of a classified points (the
> class) needs to use mode of the point class categories as index. I'd like
> to have option "MODE" as the index.
>
>
>
> Thanks,
>
>
>
> Zhan.
>
>
>
> On Wed, Feb 4, 2015 at 1:47 PM, Daniel Clewley <daniel.clew...@gmail.com>
> wrote:
>
> Hi Zhan,
>
>
>
> You need to define a scheme when importing ASCII data using the ‘—schema’
> flag.
>
>
>
> There are some examples in the schemas folder of the SPDLib source. You
> can modify the xyzi.xml one, changing the delimiter to “ “.
>
>
>
> Thanks,
>
>
>
> Dan
>
>
>
> On 4 Feb 2015, at 15:41, Zhan Li <zhanli1...@gmail.com> wrote:
>
>
>
> Sorry for bugging again... I got segmentation fault error. My ascii file
> is formatted as x y z I (they are separated by a space, no header line). Is
> it because there might be some funky points in my data? Our point cloud
> data has some noise so far we haven't figured out a good way to remove. If
> helpful for more info, here is the ASCII file I'm converting to spd.
> ftp://earth.bu.edu/zhanli86/hfhd_20140919_c_ascii.txt
>
>
>
> thanks,
>
>
>
> Zhan.
>
>
>
> On Wed, Feb 4, 2015 at 8:57 AM, Pete Bunting <petebunt...@mac.com> wrote:
>
> HI Zhan,
>
>
>
> If you open the SPD file in hdfview then you can save out the quicklook
> image.
>
>
>
> Cheers, Pete
>
>
>
>
>
>
>
> On 4 Feb 2015, at 13:05, Zhan Li <zhanli1...@gmail.com> wrote:
>
>
>
> Oh oh this is embarrassing that I missed my typo error... Hectic day...
> But good to to know the indexing should export to SPD. I was wondering if
> ASCII to ASCII could work...
>
>
>
> Is there a way to export the quick view image in SPD to a tif or other
> imag file? If not I think I'll read the quick view from the SPD and save
> it?
>
>
>
> Thanks
>
>
>
> Zhan.
>
> On Wednesday, February 4, 2015, Pete Bunting <petebunt...@mac.com> wrote:
>
> Hi Zhan,
>
>
>
> Going from ascii to ascii won’t do anything in terms of an index. If you
> want an indexed file it needs to be an SPD file. So you should have --if
> ACSII --of SPD.
>
>
>
> Cheers, Pete
>
>
>
> On 4 Feb 2015, at 07:30, Daniel Clewley <daniel.clew...@gmail.com> wrote:
>
>
>
> HI Zhan,
>
>
>
> I think the problem is you’re only using single dashes for -if and -of it
> should be:
>
>
>
> —if ASCII —of ASCII
>
>
>
> To get the latest version of SPDLib you can check out the development
> version:
>
>
>
> hg clone https://bitbucket.org/petebunting/spdlib
>
>
>
> Thanks,
>
>
>
> Dan
>
>
>
> On 4 Feb 2015, at 01:05, Zhan Li <zhanli1...@gmail.com> wrote:
>
>
>
> I got error from running spdtranslate in my installed version. Maybe there
> is a updated version I need to reinstall?
>
>
>
> Thanks,
>
>
>
> Zhan.
>
>
>
> $ spdtranslate --output
> "HFHD_20140919_C_1064_cube_bsfix_pxc_update_atp2_sdfac2_sievefac10_ptcl_points_ascii_hsproj.txt"
> --input
> "HFHD_20140919_C_1064_cube_bsfix_pxc_update_atp2_sdfac2_sievefac10_ptcl_points_ascii.txt"
> -if ASCII -of ASCII --polar -x MAX_INTENSITY
>
>
>
> It reports errors in the following.
>
>
>
> spdtranslate SPDLib 3.0.0, Copyright (C) 2012 Sorted Pulse Library (SPD)
>
> This program comes with ABSOLUTELY NO WARRANTY. This is free software,
>
> and you are welcome to redistribute it under certain conditions; See
>
> website (http://www.spdlib.org). Bugs are to be reported on the trac
>
> or directly to spdlib-develop@lists.sourceforge.net
>
> PARSE ERROR: Argument: -i
>
> Couldn't find match for argument
>
>
>
> Brief USAGE:
>
> spdtranslate -o <String> -i <String> [-f] [--pulseversion <unsigned
>
> int>] [--pointversion <unsigned int>] [--wavenoise
>
> <float>] [--Oz <float>] [--Oy <double>] [--Ox <double>]
>
> [--defineOrigin] [--tly <double>] [--tlx <double>]
>
> [--defineTL] [--keeptemp] [--convert_proj] [--output_proj
>
> <string>] [--input_proj <string>] [-b <float>] [-c
>
> <unsigned int>] [-r <unsigned int>] [-s <string>] [-t
>
> <string>] [--scan] [--polar] [--spherical] [--wavebitres
>
> <8BIT|16BIT|32BIT>] [-x <FIRST_RETURN|LAST_RETURN
>
> |START_WAVEFORM|END_WAVEFORM|ORIGIN|MAX_INTENSITY
>
> |UNCHANGED>] --of <SPD|UPD|ASCII|LAS> --if <SPD
>
> |ASCIIPULSEROW|ASCII|FWF_DAT|DECOMPOSED_DAT|LAS
>
> |DECOMPOSED_COO|ASCIIMULTILINE> [--] [--version] [-h]
>
>
>
> For complete USAGE and HELP type:
>
> spdtranslate --help
>
>
>
> On Tue, Feb 3, 2015 at 5:00 AM, Pete Bunting <petebunt...@mac.com> wrote:
>
> Hi Zhan,
>
>
>
> Yes, sorry the website is not very up to date. There is more up to date
> documentation on the sourceforge download site:
> http://sourceforge.net/projects/spdlib/files/Tutorials/
>
>
>
> Regarding the projection issue you want to use polar. The definition is
> within the paper attached, see figure 8.
>
>
>
> Cheers, Pete
>
>
>
>
>
>
>
>
>
> On 2 Feb 2015, at 19:49, Zhan Li <zhanli1...@gmail.com> wrote:
>
>
>
> Hi Dan,
>
>
>
> Thanks for the help. I was checking out the wiki page and it still lists
> spd2spd. But I just checked spdtranslate, there is no option for
> hemispherical projection. There are "polar", "spherical", and "scan". What
> is the definition of polar system here? Does it mean hemispherical
> projection? I need to feed an ASCII file of x, y, z and intensity to
> spdtranslate.
>
>
>
> Thanks,
>
>
>
> Zhan.
>
>
>
> On Mon, Feb 2, 2015 at 2:37 PM, Daniel Clewley <daniel.clew...@gmail.com
> > wrote:
>
> Hi Zhan,
>
> In the latest version of SPDLib spd2spd has been replaced with
> spdtranslate, you can use this to project data to a hemispherical system
> using the same flags.
>
> Thanks,
>
> Dan
>
>
> > On 2 Feb 2015, at 19:28, Zhan Li <zhanli1...@gmail.com> wrote:
> >
> > Hi I installed spdlib with a "version" label 20130504. I didn't see the
> spd2spd command that can project TLS data to a hemispherical projection. Is
> this version not complete or the projection function is moved to another
> command? Has anyone had the same issue and known how to get the spd2spd
> back?
> >
> > Thanks,
> >
> > Zhan.
> >
> > --
> > Zhan Li, 李展;
> > Earth & Environment, Boston University, USA;
> >
> > 2008 - 2011, in Chinese Academy of Sciences, China;
> > 2004 - 2008, in Nanjing University, China;
>
> >
> ------------------------------------------------------------------------------
> > Dive into the World of Parallel Programming. The Go Parallel Website,
> > sponsored by Intel and developed in partnership with Slashdot Media, is
> your
> > hub for all things parallel software development, from weekly thought
> > leadership blogs to news, videos, case studies, tutorials and more. Take
> a
> > look and join the conversation now.
> http://goparallel.sourceforge.net/_______________________________________________
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> > https://lists.sourceforge.net/lists/listinfo/spdlib-develop
>
>
>
>
>
> --
>
> Zhan Li, 李展;
>
> Earth & Environment, Boston University, USA;
>
>
>
> 2008 - 2011, in Chinese Academy of Sciences, China;
>
> 2004 - 2008, in Nanjing University, China;
>
>
> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming. The Go Parallel Website,
> sponsored by Intel and developed in partnership with Slashdot Media, is
> your
> hub for all things parallel software development, from weekly thought
> leadership blogs to news, videos, case studies, tutorials and more. Take a
> look and join the conversation now.
> http://goparallel.sourceforge.net/_______________________________________________
> spdlib-develop mailing list
> spdlib-develop@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/spdlib-develop
>
>
>
>
>
>
>
>
>
> --
>
> Zhan Li, 李展;
>
> Earth & Environment, Boston University, USA;
>
>
>
> 2008 - 2011, in Chinese Academy of Sciences, China;
>
> 2004 - 2008, in Nanjing University, China;
>
>
>
>
>
>
>
> --
>
> Zhan Li, 李展;
>
> Earth & Environment, Boston University, USA;
>
>
>
> 2008 - 2011, in Chinese Academy of Sciences, China;
>
> 2004 - 2008, in Nanjing University, China;
>
>
>
>
>
>
>
>
>
> --
>
> Zhan Li, 李展;
>
> Earth & Environment, Boston University, USA;
>
>
>
> 2008 - 2011, in Chinese Academy of Sciences, China;
>
> 2004 - 2008, in Nanjing University, China;
>
>
>
>
>
>
>
> --
>
> Zhan Li, 李展;
>
> Earth & Environment, Boston University, USA;
>
>
>
> 2008 - 2011, in Chinese Academy of Sciences, China;
>
> 2004 - 2008, in Nanjing University, China;
> This E-Mail is intended only for the addressee. Its use is limited to
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--
Zhan Li, 李展;
Earth & Environment, Boston University, USA;
2008 - 2011, in Chinese Academy of Sciences, China;
2004 - 2008, in Nanjing University, China;
------------------------------------------------------------------------------
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hub for all things parallel software development, from weekly thought
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look and join the conversation now. http://goparallel.sourceforge.net/
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