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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: What's New (NCGIS 2019)</title>
<meta name="description" content="GRASS GIS talk slides for NCGIS2019">
<meta name="author" content="Vaclav Petras, Corey White, Doug Newcomb">
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<body>
<div class="reveal">
<div class="slides">
<section>
<h1>GRASS GIS</h1>
<h2>What's New</h2>
<p style="margin-top: 0.5em">
<a href="http://wenzeslaus.github.io/">Vaclav (Vashek) Petras</a>
</p>
<p class="title-foot">
<a href="http://geospatial.ncsu.edu/osgeorel/" title="NCSU GeoForAll Lab">NCSU GeoForAll Lab</a>
at the
<a href="http://geospatial.ncsu.edu/" title="NCSU Center for Geospatial Analytics">Center for Geospatial Analytics</a>
<br>
<a href="http://www.ncsu.edu/" title="North Carolina State University">North Carolina State University</a>
</p>
<p><small>
Corey White, NCSU
<br>
Doug Newcomb, USFWS
</small></p>
<img src="img/grass_gis.svg" class="stretch">
<p><small>NCGIS 2019 Winston-Salem</small></p>
</section>
<section>
<h2>What's Old</h2>
</section>
<section>
<h2>All-in-one</h2>
<ul>
<li>All matured tools available right away
<li>Download of experimental tools possible
<li>Hydrology, remote sensing, lidar, network analysis, …
</ul>
<br>
<img src="img/hexagons_3d_white_outlier.png" class="stretch">
</section>
<section>
<h2>Return of investment</h2>
<p>
<em>Learn once, use forever.</em>
</p>
<ul>
<li>Emphasis on backwards compatibility
<li>No increasing license fees over time
<li>Employer-independent
</ul>
<br>
<div>
<img src="img/cli_movie.png" style="height: 7em;">
<img src="img/cli_tangible.png" style="height: 7em;">
</div>
<aside class="notes">
Old commands, often work in new versions with minimal changes.
No increase in license fees over time.
</aside>
</section>
<section>
<h2>Scientific foundation</h2>
<ul>
<li>references to papers associated with modules
<li>references to related scientific papers
</ul>
<br>
<img src="img/module_references.png" class="stretch">
</section>
<section>
<h2>Community shares improvements</h2>
<ul>
<li>GRASS GIS community provides software to the public
<li>Shares its source code
<li>Includes latest additions
</ul>
<br>
<img src="img/grass_team.jpg" class="stretch">
</section>
<section>
<h2>New in 7.0</h2>
<a href="https://trac.osgeo.org/grass/wiki/Grass7/NewFeatures">trac.osgeo.org/grass/wiki/Grass7/NewFeatures</a>
</section>
<section>
<h2>Temporal Framework</h2>
<p>Manage and analyze spatio-temporal datasets (time series)</p>
<img src="img/grass760_temporal_plot_labels.png" class="stretch">
<p>by Sören Gebbert and Thomas Leppelt
<br>
(visualization tools by Anna Petrasova and Luca Delucchi)
</section>
<section>
<h2>Animation Tool</h2>
<p>Visualize spatio-temporal datasets and other series</p>
<img src="img/temporal_precip_temp.png" class="stretch">
<p>by Anna Petrasova
</section>
<section>
<h2>...and 10,000 other changes</h2>
<p>In total, more than 10,000 changes have been implemented in 7.0 with respect to GRASS GIS 6.4.</p>
</section>
<section>
<h2>New 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>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>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>Links to source code</h2>
Documentation now links to relevant parts of the source code.
<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; Contribute better graphic designs!
</section>
<section>
<h2>New in 7.4</h2>
<a href="https://trac.osgeo.org/grass/wiki/Grass7/NewFeatures74">trac.osgeo.org/grass/wiki/Grass7/NewFeatures74</a>
</section>
<section>
<h2>Geomorphon</h2>
<p><em>r.geomorphon</em> - landform detection</p>
<img src="img/geomorphon_3d.png" class="stretch">
<p>by Jarek Jasiewicz and Tomek Stepinski
</section>
<section>
<h2>Parallelized solar radiation</h2>
<p><em>r.sun</em> - new parallelized version</p>
<img src="img/summer_solstice_centennial.gif" class="stretch">
<p>by Stanislav Zubal and Michal Lacko
</section>
<section>
<h2>Compressed NULL files</h2>
<p>reading and writing to disk is now faster for no-data values</p>
<img src="img/r_in_lidar_nulls.png" class="stretch">
<p>by Markus Metz
</section>
<section>
<h2>Data catalog</h2>
<p><em>g.gui.datacatalog</em> - browse, manage, and reproject raster and vector maps</p>
<img src="img/data_catalog.png" class="stretch">
<p>by Tereza Fiedlerova and Anna Petrasova
</section>
<section>
<h2>New in 7.6</h2>
<a href="https://trac.osgeo.org/grass/wiki/Grass7/NewFeatures76">trac.osgeo.org/grass/wiki/Grass7/NewFeatures76</a>
</section>
<section>
<h2>Computational Region in Map Display</h2>
<p><em>Map Display</em> now shows computational region extent by default</p>
<img src="img/grass760_show_region.png" class="stretch">
<p>by Martin Landa
</section>
<section>
<h2>Perceptually uniform color tables</h2>
<p>grey, viridis, inferno, magma, plasma, and grass</p>
<p>viridis as default color table</p>
<img src="img/viridis_comparison.png" class="stretch">
<p>by Vaclav Petras and Pierre Roudier
</section>
<section>
<h2>Virtual raster mosaics</h2>
<p><em>r.buildvrt</em> - creates virtual raster (VRT) mosaics from a list of input raster maps</p>
<img src="img/lidar_city.png" class="stretch">
<p>by Markus Metz
</section>
<section>
<h2>Faster and higher compression</h2>
<p><em>ZSTD</em> - an improvement over ZLIB method, providing both faster and higher compression</p>
<img src="img/skyview.png" class="stretch">
<p>by Markus Metz
</section>
<section>
<h2>Segment library all-in-memory mode</h2>
<p>the segment library uses a new fast all-in-memory cache instead of a file-based cache if all data can be kept in memory</p>
<p>faster cost path, point cloud binning, stream and flow, i.segment, v.surf.bspline</p>
<img src="img/cost.png" class="stretch">
<p>by Markus Metz
</section>
<section>
<h2>Simplified raster algebra</h2>
<p><em>r.mapcalc.simple</em> - simplified syntax for compatibility with QGIS</p>
<pre style="font-size: 94%;">r.mapcalc.simple expression="A + B + C"
a=one b=two c=three output=four
</pre>
<img src="img/uav_diff.png" class="stretch">
<p>by Vaclav Petras
</section>
<section>
<h2>New Addons</h2>
</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>Tools for Sentinel Data</h2>
<p>download, import, preprocessing, cloud detection, and masking of Sentinel 2 data</p>
<img src="img/i_sentinel_mask_ES.png" class="stretch">
<p>by Roberta Fagandini, Martin Landa, Moritz Lennert, and Roberto Marzocchi
</section>
<section>
<h2>Point clouds with PDAL</h2>
<p><em>r.in.pdal</em> - binning of points using PDAL for LAS reading</p>
<img src="img/lidar_vegetation_3d.png" class="stretch">
<p>by Anika Bettge and Vaclav Petras
</section>
<section>
<h2>Point cloud transects</h2>
<p><em>v.profile.points</em> - transects of point clouds</p>
<img src="img/v_profile_points.png" class="stretch">
<p>by Vaclav Petras
</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>
<img src="img/grass_gis.svg" alt="GRASS GIS logo" class="stretch">
<p>
<a href="https://grass.osgeo.org/">grass.osgeo.org</a>
<p>
<a href="https://github.com/wenzeslaus/grass-gis-talks/">github.com/wenzeslaus/grass-gis-talks</a>
<p>
<a href="https://geospatial.ncsu.edu/engage/service-center/">geospatial.ncsu.edu/engage/service-center</a>
<p>
<a href="https://twitter.com/vaclavpetras/">Twitter: vaclavpetras</a>
<br>
<a href="https://github.com/wenzeslaus/">GitHub: wenzeslaus</a>
<br>
<a href="https://gitlab.com/vpetras/">GitLab: vpetras</a>
</p>
<p>Meet me here: NCSU booth, poster session, next talks</p>
</section>
</div>
</div>
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hideAddressBar: true,
// Opens links in an iframe preview overlay
previewLinks: false,
// Slide transition
transition: 'none', // default/none/slide/concave/convex/zoom
// Transition speed
transitionSpeed: 'default', // default/fast/slow
// Transition style for full page slide backgrounds
backgroundTransition: 'none', // default/none/slide/concave/convex/zoom
// Number of slides away from the current that are visible
viewDistance: 3,
// Parallax background image
//parallaxBackgroundImage: '', // e.g. "'https://s3.amazonaws.com/hakim-static/reveal-js/reveal-parallax-1.jpg'"
// Parallax background size
//parallaxBackgroundSize: '' // CSS syntax, e.g. "2100px 900px"
chalkboard: {
boardmarkerWidth: 3,
chalkWidth: 7,
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/[email protected]/MathJax.js',
config: 'TeX-AMS_HTML-full',
// pass other options into `MathJax.Hub.Config()`
TeX: { Macros: { RR: "{\\bf R}" } }
},
plugins: [
RevealMath,
RevealHighlight,
RevealMarkdown,
RevealChalkboard
]
});
</script>
</body>
</html>