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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>GRASS GIS 7.2</title>
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<meta name="author" content="Vaclav Petras, Markus Neteler, Anna Petrasova, Helena Mitasova">
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</head>
<body>
<div class="reveal">
<div class="slides">
<section>
<h1>GRASS GIS</h1>
<h3>Advanced geospatial technologies:</h3>
<h3>The new powerful GRASS GIS 7.2 release</h3>
<p style="margin-top: 0.5em">
<a href="http://wenzeslaus.github.io/">Vaclav (Vashek) Petras</a>
</p>
<p class="title-foot">
<a href="http://www.ncsu.edu/" title="North Carolina State University">North Carolina State University</a><br>
<a href="http://www.ncsu.edu/" title="North Carolina State University">NCSU</a>
<a href="http://geospatial.ncsu.edu/osgeorel/" title="NCSU GeoForAll Lab">GeoForAll Lab</a>
at
<a href="http://geospatial.ncsu.edu/" title="NCSU Center for Geospatial Analytics">Center for Geospatial Analytics</a>
<br>
</p>
<p><small>Markus Neteler - Mundialis GmbH &, Co. KG;<br> Anna Petrasova - NCSU, Helena Mitasova - NCSU</small></p>
<img src="img/grass_gis.svg" class="stretch">
<p><small>FOSS4G 2017 Boston</small></p>
</section>
<section>
<h2>Runs everywhere</h2>
<ul>
<li>from Raspberry Pi to HPC cluster
<li>Linux, Mac, Windows, ...
<li>GCC, clang, C, C++98, C++11, C++14
</ul>
</section>
<section>
<h2>Interface: CLI</h2>
<p>The baseline interface for efficiency and reproducibility</p>
<img src="img/grass_cli.png" class="stretch">
</section>
<section>
<h2>Interface: GUI</h2>
<p>The interface for beginners and desktop</p>
<img src="img/grass_gui.png" class="stretch">
</section>
<section>
<h2>Tangible Landscape</h2>
<p>3rd party tangible user interface to GRASS GIS and Blender</p>
<img src="img/tangible_landscape.jpg" class="stretch">
<p>by NC State University, Center for Geospatial Analytics</p>
</section>
<section>
<h2>APIs</h2>
<ul>
<li>native:
<ul>
<li>C
<li>Python
<li>command line
</ul>
<li>3rd party:
<ul>
<li>R (<em>rgrass7</em> package)
<li> Ruby (<em>grassgis</em> gem)
<li> Java (<em>JGrasstools</em> library)
</ul>
<li>as backend:
<ul>
<li><em>QGIS Processing</em> (Python and R APIs)
<li><em>gvSIG JGrasstools Spatial Toolbox</em> <small>under development</small>
</ul>
</section>
<section>
<h2>Functionality</h2>
<ul>
<li>Hydrology
<li>Remote sensing/imagery/image processing
<li>3D rasters, space-time cubes
<li>Spatio-temporal
<li>Lidar
<li>Topological vectors, network analysis
<li>Integrated visualizations, 3D visualizations
<li>Relational databases (SQLite, PostgreSQL, PostGIS, MySQL)
</ul>
</section>
<section>
<h2>Return of investment</h2>
<h3>2002 code running in 2017?</h3>
<!-- 5 pre-release -->
version 5.0 code works as is in 7.2:
<pre style="font-size: 94%;">r.mapcalc depr.bin="if((elev - fill)< 0., 1, 0)"
</pre>
<p>
although there is a better way to write it:
</p>
<pre style="font-size: 94%;">r.mapcalc <em style="color: red;">"</em>depr<em style="color: red;">_</em>bin<em style="background-color: #FFDDDD;"> = </em>if((elev - fill) < 0., 1, 0)"
</pre>
</section>
<section>
<h2>Command line prevails: 1987</h2>
<img src="img/cli_movie.png" class="stretch">
</section>
<section>
<h2>Command line prevails: 2017</h2>
<img src="img/cli_tangible.png" class="stretch">
</section>
<section>
<h2>Scientific foundation</h2>
references to related scientific papers associated with a module
<img src="img/module_references.png" class="stretch">
</section>
<section>
<h2>GRASS GIS 7.2</h2>
<ul>
<li>Recent releases:
<ul>
<li>7.2.0 (December 2016) <small>1,900 commits since 7.0</small>
<li>7.2.1 (May 2017) <small>150 commits since 7.2.0</small>
</ul>
<li style="opacity: 0.5;">Upcoming releases:
<ul>
<li>7.2.2 (summer/fall 2017)
<li>7.4.0 (fall/winter 2017)
<li>8.0.0 (panning started)
</ul>
</ul>
</section>
<section>
<h2>New features in 7.2</h2>
<a href="https://trac.osgeo.org/grass/wiki/Grass7/NewFeatures72">trac.osgeo.org/grass/wiki/Grass7/NewFeatures72</a>
</section>
<section>
<h2>Data catalog</h2>
<p><em>g.gui.datacatalog</em> - browse and manipulate raster and vector maps</p>
<img src="img/data_catalog.png" class="stretch">
<p>by Tereza Fiedlerova and Anna Petrasova
</section>
<section>
<h2>Simple Python Editor</h2>
<p>Create Python scripts and modules with ease</p>
<img src="img/pyedit.png" class="stretch">
<p>by Vaclav Petras
</section>
<!--
g.region n=264149 s=99480 w=307341 e=533491 res=10 -a
d.vect map=sc_state fill_color=0:64:68 width=1 legend_label="South Carolina"
d.vect map=nc_state color=0:77:82 fill_color=0:174:96 width=2 legend_label="North Carolina"
d.vect map=urbanarea color=none fill_color=39:94:70 width=1 legend_label="Urban areas"
d.vect map=railroads color=244:246:246 width=2 legend_label="Major roads"
d.vect map=hospitals color=167:0:33 fill_color=255:0:51 width=1 icon=basic/cross3 size=10 legend_label=Hospitals
d.legend.vect -b at=2,40 title="NC hospitals around Charlotte" symbol_size=17 bgcolor=198:198:198 font=Lato:Regular fontsize=15 title_font=Lato:Bold title_fontsize=15
-->
<section>
<h2>Vector legend</h2>
<p><em>d.legend.vect</em> - automatic and customizable legends</p>
<img src="img/d_legend_vect.png" class="stretch">
<p>by Adam Laza and GSoC mentors
</section>
<section>
<h2>Advanced search in command line</h2>
<p><em>g.search.modules</em> - search for modules</p>
<img src="img/g_search_modules.png" class="stretch">
<p>by Jachym Cepicky
</section>
<section>
<h2>3D raster flows and gradients</h2>
<p>
<em>r3.flow</em> - flow lines in a 3D raster
<br>
<em>r3.gradient</em> - gradients in a 3D raster
</p>
<img src="img/r3_flow.png" class="stretch">
<p>by Anna Petrasova
</section>
<section>
<h2>Simplified batch processing</h2>
<pre style="font-size: 94%;">grass72 /grassdata/nc_spm/work1 --exec \
r.viewshed input=elevation output=viewshed \
coordinates=642964,222890
</pre>
<p>by Vaclav Petras
</section>
<section>
<h2>Temporal Algebra</h2>
<img src="img/temporal_htc.png" class="stretch">
<p>by Thomas Leppelt and Soeren Gebbert
</section>
<section>
<h2>Other improvements in 7.2</h2>
</section>
<section>
<h2>viridis as default color table</h2>
<p>Perceptually uniform color table</p>
<img src="img/viridis_comparison.png" class="stretch">
<p>by Vaclav Petras (following Matplotlib's example)
</section>
<section>
<h2>Links to source code</h2>
<img src="img/module_author_source.png" class="stretch">
<p>by Luca Delucchi
</section>
<section>
<h2>Graphical index</h2>
<img src="img/graphical_index.png" class="stretch">
<p>by Vaclav Petras; designer needed!
</section>
<section>
<h2>New addons</h2>
<!-- Addons added since 7.0 -->
<img src="img/.png" class="stretch">
</section>
<section>
<h2>SLIC</h2>
<p><em>i.superpixels.slic</em> - image segmentation using SLIC superpixels</p>
<img src="img/i_superpixels_slic_ndvi.png" class="stretch">
<p>by Rashad Kanavath and Markus Metz
</section>
<section>
<h2>Supervised classification</h2>
<p><em>r.learn.ml</em> - classification with Python scikit-learn package</p>
<img src="img/.png" class="stretch">
<p>by Steven Pawley
</section>
<section>
<h2>Itzï</h2>
<p>Hydrologic and hydraulic model of surface water flow</p>
<img src="img/itzi.png" class="stretch">
<p>by Laurent Courty
</section>
<section>
<h2>FUTURES</h2>
<p><em>r.futures</em> - set of modules for urban spread modeling</p>
<img src="img/futures.jpg" class="stretch">
<p>by NC State University, Center for Geospatial Analytics
</section>
<section>
<h2>Parallelized solar radiation</h2>
<p><em>r.sun.mp</em> - parallelized version of <em>r.sun</em></p>
<img src="img/summer_solstice_centennial.gif" class="stretch">
<p>by Jaroslav Hofierka et al.
</section>
<section>
<h2>Resources</h2>
<ul>
<li>
Full list of
<a href="https://grass.osgeo.org/grass72/manuals/graphical_index.html">core modules</a>
and official
<a href="https://grass.osgeo.org/grass72/manuals/addons">addon modules</a>
<li>
Tutorials:
<ul>
<li>
<a href="https://grasswiki.osgeo.org/wiki/From_GRASS_GIS_novice_to_power_user_(workshop_at_FOSS4G_Boston_2017)">Introduction to GRASS GIS</a>
<li>
<a href="https://grasswiki.osgeo.org/wiki/Processing_lidar_and_UAV_point_clouds_in_GRASS_GIS_(workshop_at_FOSS4G_Boston_2017)">Processing lidar and UAV point clouds</a>
<li>
<a href="https://github.com/wenzeslaus/python-grass-addon">How to write a Python GRASS GIS 7 addon</a>
<li>
<a href="http://ncsu-geoforall-lab.github.io/grass-temporal-workshop/">
Spatio-temporal data handling and visualization</a>
<li>
<a href="https://grasswiki.osgeo.org/wiki/Workshop_on_urban_growth_modeling_with_FUTURES">
Urban growth modeling with FUTURES</a>
</ul>
<li>
Books (English):
<ul>
<li>Open Source GIS: A GRASS GIS Approach
<li>Tangible Modeling with Open Source GIS
<li>GIS-based Analysis of Coastal Lidar Time-Series
<li>Open Source Approaches to Spatial Data Handling
</ul>
<li>
<a href="https://grass.osgeo.org/support/">Community and commercial support</a>
</ul>
</section>
<section>
<img src="img/grass_gis.svg" alt="GRASS GIS logo" style="height: 300px;">
<p>
<a href="https://grass.osgeo.org">grass.osgeo.org</a>
<p>
<!--
Slides
<br>
<a href="http://wenzeslaus.github.io/grass-gis-talks">wenzeslaus.github.io/grass-gis-talks</a>
<br>
-->
Twitter: vaclavpetras
<br>
GitHub: wenzeslaus
</p>
</section>
</div>
</div>
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chalkEffect: 1.0,
src: null,
readOnly: undefined,
toggleChalkboardButton: true,
toggleNotesButton: true,
boardmarkers : [
{ color: 'rgba(220,20,60,1)', cursor: 'url(' + path + 'img/boardmarker-red.png), auto'},
{ color: 'rgba(255,140,0,1)', cursor: 'url(' + path + 'img/boardmarker-orange.png), auto'},
]
},
math: {
mathjax: 'https://cdn.jsdelivr.net/gh/mathjax/mathjax@2.7.8/MathJax.js',
config: 'TeX-AMS_HTML-full',
// pass other options into `MathJax.Hub.Config()`
TeX: { Macros: { RR: "{\\bf R}" } }
},
plugins: [
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RevealHighlight,
RevealMarkdown,
RevealChalkboard
]
});
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</body>
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