<div dir="ltr"><p class="MsoNormal"><a name="_Hlk484784993">Weekly Report for Paul Schrum for
Week 2 (the week ending 6/9/2017)<span></span></a></p>
<p class="MsoNormal">Project:
Integration Of PDAL into GRASS GIS<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">1. What did you get done this week?<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">- Found a suitable test .las dataset and ran pdal on it from
a unix command line just to view info and prove to myself that everything works
as expected. I also ran v.in.lidar on
this dataset, again just to be sure it works as expected.<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">- Got a good understanding of how writing to a new VectorMap
works in GRASS by studying v.in.ascii and v.in.lidar.<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">- Added reference to pdal-config to my local build
environment and got it to build okay.
Doing this caused make to attempt to build v.in.pdal. See the next bullet item for more on this.<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">- I did not previously realize that when I was building
GRASS from source, it was not trying to build v.in.pdal, though the source is
part of the Subversion repo. So with my
mentor’s help I brought v.in.pdal into the build process on my local
machine. This triggered build errors,
which is expected to happen. This is the
state of the code as I prepare this report.<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">- Studied PDAL documentation (especially <a href="https://www.pdal.io/pipeline.html">https://www.pdal.io/pipeline.html</a>) and started to develop a coding approach and
plan which will utilize Pipelines. There
will be some common operations for which v.in.pdal will provide the pipeline
json string internally so the GRASS end user does not have to concern
themselves with it. There will also be a
way in GRASS for end users to provide their own pipeline json file if they prefer. Much of this comes from recommendations by Howard
Butler on the PDAL mailing list and in the primary GRASS enhancement ticket for
this project.<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">- Discussed this approach with my mentor and we talked about
a few more issues beyond just the pipeline approach.<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">- Added v.in.pdal to a new public github repository. (<a href="https://github.ncsu.edu/ptschrum/v_in_pdal">https://github.ncsu.edu/ptschrum/v_in_pdal</a>) As of 6/9/2017 this repository is just a copy
of what is in the main svn repo for v.in.pdal.
All changes will be pushed from my local machine to the github
repository.<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">2. What do you plan on doing next week?<span></span></p>
<p class="MsoNormal">- Write classes and procedural code to make a simple and
basic use case work via v.in.pdal.<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">- This includes implementing the pipeline approach as
described above. It also entails
eliminating rotted API function calls and struct references. Much of the existing code base will be
rewritten. So part of this task will be
assessing what existing code to retain and what to rework.<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">- Implement the GRASS testing framework using the sample
dataset and add some foundational unit test runs.<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">- Paul’s vacation begins Friday, 16 June. That day and part of the Thursday before I
will not be able to work on the project.
Vacation lasts until Monday 26 June.
Tuesday may be a slow day as well.
I will continue to post weekly updates, but they will not have much in
them.<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">3. Are you blocked on anything?<span></span></p>
<p class="MsoNormal">No.<span></span></p>
<p class="MsoNormal"><span> </span></p></div>