[Qgis-user] QGIS Functionality and Training

Wed Oct 3 07:10:36 PDT 2018

Hi Luigi

A PDAL processing toolbox will be nice to have. This is a great addition 
to the QGIS project. Keep in mind that LAStools is intergrated in the 
processing toolbox but it is not free.  You can make small project but 
for anything serious or professiona you will need to pay for LAStools or 
else, you are using a limited demo. This being said, LAStools is not 
that expensive, has a very good email list where trouble shooting is 
done on the fly by the developer.  I would buy it.  Las2dem (not open 
source), as an example, will add black lines in the DEM if the data 
files are past a certain size.  LAStools does have open source tools 
(like las2txt.exe) but las2dem is not one of them.  This being said, I 
work with the open source tools from PDAL and LAStools and use GDAL Grid 
(available with QGIS) and Cloud Compare to generate the DEMs.

If your company does not have a GIS, then the cost of the learning curve 
between ArcGIS and QGIS will not be very different.  QGIS and variety of 
Open Source software like Cloud Compare, GRASS, SAGA can do everything 
you want.  Some is easier with ArcGIS and some is easier with QGIS.  
Personally, I have never purchased an ArcGIS license and don't see the 
advantage.

Keep in mind that doing this stuff will require that people in the 
company learn about GIS and not just on how to run software if you want 
to make a good professional job. Send me a personal email if you want 
examples of this stuff.  I am currently working on a project in Peru and 
could probably share some screen shots.   I am in Montréal, Canada.  I 
can also do training in French and English.  I also speak Spanish but 
it's a little rusty.  I am finishing a Ph.D. in a Remote sensing lab 
with extensive use of LiDAR and DEMs.

Nicolas Cadieux

nicolas.cadieux at archeotec.ca

P.S.

You will probably want to work with TauDEM, a qgis plugin for hydrologic 
analysis.  Look at http://www.engenious.com/Content/Tutorial.pdf and 
http://hydrology.usu.edu/taudem/taudem5/index.html

On 2018-10-03 8:15 AM, Luigi Pirelli wrote:
> Hi,
>
> All you listed is possible to process in qgis via all possibilities 
> offered by backend integrated in processing (GRASS; SAGA, native qgis 
> algs etc etc), btw about LIDAR data in a week I'll push a new 
> provider  for qgis processing toolbox that will allow the use of PDAL 
> (http://www.pdal.io) in processing. This will allow you to create 
> automatic workflow to automatically process basin delineation from 
> lidar data. BTW right now you can already use LASTools integrated in 
> processing toolbox. las2dem command can generate dem for basin 
> delineation.
>
> I strongly suggest to
> 1) avoid to spend for Arc licences and in opposite
>   A) invest in qgis upstream fixes via hiring core developers or 
> financing directly qgis project
>   B) customize your workflows hiring a power user
>   C) pay training to do all above in-house
> 2) invest contributing the new PDALtools in processing
> 3) invest contributing to PDAL
>
> all above suggestion allow your company to have ALSO a more direct 
> control on your product respect depending on external marketing decisions.
>
> regards
>
> Luigi Pirelli
>
> **************************************************************************************************
> * LinkedIn: https://www.linkedin.com/in/luigipirelli
> * Stackexchange: http://gis.stackexchange.com/users/19667/luigi-pirelli
> * GitHub: https://github.com/luipir
> * Mastering QGIS 2nd Edition:
> * 
> https://www.packtpub.com/big-data-and-business-intelligence/mastering-qgis-second-edition
> * Hire me: http://goo.gl/BYRQKg
> **************************************************************************************************
>
>
> On Wed, 3 Oct 2018 at 13:36, Seth Cohen <scohen at nfps.net 
> <mailto:scohen at nfps.net>> wrote:
>
>     All,
>
>     The company I work for is in need of the following information on
>     an upcoming project, and my boss is asking if we need to buy
>     ArcGIS or can QGIS do all this; see the list below.
>
>      1. Basin delineation from LiDAR surfaces
>      2. Stage-Storage determination for each delineated basin for
>         input into a hydrology model
>      3. Determine the longest flow path in the basin
>      4. Average slope of that flow path.
>      5. Acreage within the basin that is a certain soil grouping
>      6. Land cover size estimates, e.g. residential, timberland, open
>         pasture, wetland, industrial, commercial, etc.
>      7. Land cover size estimates for soil grouping mentioned in #5
>
>     Also, does anyone on here provide on-site training or know of
>     anyone or any company that provides on-site training and support? 
>     The company I work for is willing to pay of course.  I am based
>     out of USA, Lake City – Florida.
>
>     Thanks in advance.
>
>     Seth Cohen
>
>     Project Manager
>
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