-
Notifications
You must be signed in to change notification settings - Fork 1
/
foss4g2021.html
918 lines (777 loc) · 33.5 KB
/
foss4g2021.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
<!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>State of GRASS GIS: The Dawn of a New Era</title>
<meta name="description" content="GRASS GIS state of the art slides for FOSS4G 2021">
<meta name="author" content="Vaclav Petras et al.">
<link rel="stylesheet" href="reveal/reset.css">
<link rel="stylesheet" href="reveal/reveal.css">
<link rel="stylesheet" href="css/theme/osgeo.css" id="theme">
<link rel="stylesheet" href="css/nouislider.min.css" id="slide">
<!-- Theme used for syntax highlighted code -->
<link rel="stylesheet" href="reveal/plugin/highlight/monokai.css" id="highlight-theme">
<!-- For chalkboard plugin -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
<!-- If the query includes 'print-pdf', include the PDF print sheet -->
<script>
if( window.location.search.match( /print-pdf/gi ) ) {
var link = document.createElement( 'link' );
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = 'css/print/pdf.css';
document.getElementsByTagName( 'head' )[0].appendChild( link );
}
</script>
<!-- <link href="https://fonts.googleapis.com/css?family=Miriam+Libre" rel="stylesheet">-->
<style>
/* miriam-libre-regular - latin */
@font-face {
font-family: 'Miriam Libre';
font-style: normal;
font-weight: 400;
src: url('lib/font/miriam-libre/miriam-libre-v1-latin-regular.eot'); /* IE9 Compat Modes */
src: local('Miriam Libre'), local('MiriamLibre-Regular'),
url('lib/font/miriam-libre/miriam-libre-v1-latin-regular.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
url('lib/font/miriam-libre/miriam-libre-v1-latin-regular.woff2') format('woff2'), /* Super Modern Browsers */
url('lib/font/miriam-libre/miriam-libre-v1-latin-regular.woff') format('woff'), /* Modern Browsers */
url('lib/font/miriam-libre/miriam-libre-v1-latin-regular.ttf') format('truetype'), /* Safari, Android, iOS */
url('lib/font/miriam-libre/miriam-libre-v1-latin-regular.svg#MiriamLibre') format('svg'); /* Legacy iOS */
}
/* miriam-libre-700 - latin */
@font-face {
font-family: 'Miriam Libre';
font-style: normal;
font-weight: 700;
src: url('lib/font/miriam-libre/miriam-libre-v1-latin-700.eot'); /* IE9 Compat Modes */
src: local('Miriam Libre Bold'), local('MiriamLibre-Bold'),
url('lib/font/miriam-libre/miriam-libre-v1-latin-700.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
url('lib/font/miriam-libre/miriam-libre-v1-latin-700.woff2') format('woff2'), /* Super Modern Browsers */
url('lib/font/miriam-libre/miriam-libre-v1-latin-700.woff') format('woff'), /* Modern Browsers */
url('lib/font/miriam-libre/miriam-libre-v1-latin-700.ttf') format('truetype'), /* Safari, Android, iOS */
url('lib/font/miriam-libre/miriam-libre-v1-latin-700.svg#MiriamLibre') format('svg'); /* Legacy iOS */
}
/* sintony-regular - latin */
@font-face {
font-family: 'Sintony';
font-style: normal;
font-weight: 400;
src: url('lib/font/sintony/sintony-v4-latin-regular.eot'); /* IE9 Compat Modes */
src: local('Sintony'),
url('lib/font/sintony/sintony-v4-latin-regular.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
url('lib/font/sintony/sintony-v4-latin-regular.woff2') format('woff2'), /* Super Modern Browsers */
url('lib/font/sintony/sintony-v4-latin-regular.woff') format('woff'), /* Modern Browsers */
url('lib/font/sintony/sintony-v4-latin-regular.ttf') format('truetype'), /* Safari, Android, iOS */
url('lib/font/sintony/sintony-v4-latin-regular.svg#Sintony') format('svg'); /* Legacy iOS */
}
/* sintony-700 - latin */
@font-face {
font-family: 'Sintony';
font-style: normal;
font-weight: 700;
src: url('lib/font/sintony/sintony-v4-latin-700.eot'); /* IE9 Compat Modes */
src: local('Sintony Bold'), local('Sintony-Bold'),
url('lib/font/sintony/sintony-v4-latin-700.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
url('lib/font/sintony/sintony-v4-latin-700.woff2') format('woff2'), /* Super Modern Browsers */
url('lib/font/sintony/sintony-v4-latin-700.woff') format('woff'), /* Modern Browsers */
url('lib/font/sintony/sintony-v4-latin-700.ttf') format('truetype'), /* Safari, Android, iOS */
url('lib/font/sintony/sintony-v4-latin-700.svg#Sintony') format('svg'); /* Legacy iOS */
}
.reveal li > ul {
font-size: 85%;
line-height: 110%;
}
.reveal small {
display: inline-block;
font-size: smaller;
line-height: 1.2em;
vertical-align: baseline;
margin: 0.1em; }
.reveal small * {
vertical-align: baseline; }
.reveal .credit {
font-size: small;
color: gray;
margin: 0.1em;
}
.reveal .right, .reveal .textimg > img, .reveal .textimg > video, .reveal .textimg > iframe, .reveal .imgtext > p, .reveal .imgtext > ul, .reveal .imgtext > ol, .reveal .imgtext > div {
float: right;
text-align: left;
max-width: 47%;
}
.reveal .left, .reveal .imgtext > img, .reveal .imgtext > video, .reveal .imgtext > iframe, .reveal .textimg > p, .reveal .textimg > ul, .reveal .textimg > ol, .reveal .textimg > div {
float: left;
text-align: left;
max-width: 47%;
}
</style>
</head>
<body>
<div class="reveal">
<div class="slides">
<!--
GRASS GIS is a well established, all-in-one geospatial number cruncher with Python interface, command line, and GUI. This talk will give an overview of new additions and highlight latest updates in version 7.8 and new major version 8.0. Major updates in 7.8 include Python 3 support, transition to PROJ 6+, easier batch processing, virtual raster mosaic, and improved data compression. Version 8.0 completely revamps the first-time user experience in GUI, streamlines how users interact with their data, and supports dark-themes. The development successfully runs on GitHub, several Docker images are available, and there is a growing number of Jupyter Notebooks.
This talk gives an overview of the current state of the GRASS GIS project for both users and developers. The focus will be on new releases, specifically the new major version 8, and various updates including Python 3, PROJ, and GitHub transitions.
-->
<section>
<h1>State of GRASS GIS:<br>The Dawn of a New Era</h1>
<p style="margin-top: 0.5em">
<a href="http://wenzeslaus.github.io/" style="font-weight: bold">
Vaclav (Vashek) Petras*
</a>
<br>
& Veronica Andreo, Martin Landa, Anna Petrasova, Guido Riembauer,
Maris Nartiss, Moritz Lennert, Markus Metz, Stefan Blumentrath,
Huidae Cho, Markus Neteler
</p>
<p class="title-foot">
*
<a href="http://geospatial.ncsu.edu/geoforall/" 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">NC State University</a>
</p>
<img src="img/grass_gis.svg" class="stretch">
<p><small>FOSS4G 2021 Buenos Aires</small></p>
<p>
<a href="https://wenzeslaus.github.io/grass-gis-talks/foss4g2021.html">wenzeslaus.github.io/grass-gis-talks</a>
</section>
<section class="textimg">
<h2>Vaclav (Vashek) Petras</h2>
<ul>
<li>Geospatial Research Software Engineer at North Carolina State University
<li>BS & MS in Geoinformatics, Czech Technical University in Prague
<li>PhD in Geospatial Analytics, NC State
<li>GRASS GIS Development Team Member
<li>GRASS GIS Project Steering Committee Member
<li>Open Source Geospatial Foundation Charter Member
</ul>
<img src="img/vp_field_work.jpg">
</section>
<section>
<h2>Community</h2>
<ul>
<li>Open community of users and developers</li>
<li>Contributors to code, documentation, translations, …</li>
<li>Project Steering Committee</li>
<li>PSC Chair: Verónica Andreo <small>(since February 2021)</small></li>
</ul>
<br>
<img src="img/psc_meeting_2021.png" class="stretch">
<p><em>Credit goes to the whole community, not just this talk's authors.</em></p>
</section>
<section>
<h2>Support</h2>
<ul>
<li>Community support
<ul>
<li><a href="https://lists.osgeo.org/mailman/listinfo/grass-user">user mailing list</a> <small>(with vast archives since 1991)</small>
<li><a href="https://gis.stackexchange.com/questions/tagged/grass">GIS StackExchange</a> <small>(use increasing)</small>
<li><a href="https://github.com/OSGeo/grass/discussions">GitHub Discussions</a> <small>(since September 2021)</small></li>
</ul>
<li>Commercial support
<ul>
<li><a href="https://www.mundialis.de/en/open-source-gis/">mundialis</a>
<li><a href="https://opengeolabs.cz/en/home/">OpenGeoLabs</a> (& GISMentors)
<li><a href="https://www.northrivergeographic.com/">North River Geographic Systems</a>
<li><a href="https://geospatial.ncsu.edu/engage/service-center/">Center for Geospatial Analytics, NC State University</a>
<li>…
</ul>
<small><em>Write to grass-dev or contact me privately if your name is not here!</em></small>
</ul>
<br>
<img src="img/grass_gis.svg" alt="GRASS GIS logo" class="stretch">
</section>
<section>
<h2>General Features</h2>
<ul>
<li>Free and open source, you can use, modify, improve, share</li>
<li>Large amount of tools: <b>500+</b> <a href="https://grass.osgeo.org/grass80/manuals/full_index.html">core modules</a>, <b>300+</b> <a href="https://grass.osgeo.org/grass78/manuals/addons/">addons</a></li>
<li>Graphical User Interface and Command Line Interface</li>
<li>Python API, C API, and libraries</li>
<li>Interface & connection with R, QGIS, WPS, …</li>
<li>Different data types supported:
<a href="https://grass.osgeo.org/grass-stable/manuals/vectorintro.html">vector</a>,
<a href="https://grass.osgeo.org/grass-stable/manuals/rasterintro.html">raster</a>
(including <a href="https://grass.osgeo.org/grass-stable/manuals/imageryintro.html">satellite imagery</a>),
<a href="https://grass.osgeo.org/grass-stable/manuals/raster3dintro.html">3D raster (voxel)</a>,
and
<a href="https://grass.osgeo.org/grass-stable/manuals/temporalintro.html">space-time datasets (temporal data)</a>.</li>
</ul>
<img src="img/modeler_skyview.png" class="stretch">
</section>
<section>
<h2>Scientific Foundations</h2>
<ul>
<li>references to related scientific papers</li>
<li>references to papers associated with tools or libraries</li>
<li>usage visible in scientific literature</li>
<li><a href="https://scholar.google.com/citations?user=gJ0ZB0cAAAAJ">GRASS GIS Google Scholar profile</a> <small>(experimental)</small></li>
<li><a href="https://doi.org/10.5281/zenodo.5176030">DOI: 10.5281/zenodo.5176030</a> <small>(experimental)</small></li>
</ul>
<br>
<img src="img/module_references.png" class="stretch">
<br>
</section>
<section>
<h2>Innovation with Stability</h2>
Improvements bring need for changes, but breaking changes are introduced only when needed, for example:
<ul>
<li>Graphical user interface changes as needed.</li>
<li>Python API added in v6 taking the leading position from Bash, matured in v7, additions planned for 8.2.</li>
<li>Basic things continue to work in the same way, for example:</li>
</ul>
<p><em>Raster algebra expression from 2002 (v5) works in 2021 (v8):</em></p>
<p>
<code style="font-size: larger;">
depressions<em style="background-color: #f8404090;"> </em>=<em style="background-color: #f8404090;"> </em>
if(elevation - fill < 0, 1, 0)
</code>
</p>
<p>
<em>Only the best practice on how you write spaces around an equal sign changed.</em>
</p>
</section>
<section>
<h2>All-in-one Software Suite</h2>
<ul>
<li>All matured tools available right away.
<li>Download of experimental tools possible.
<li>Network analysis, hydrology, OBIA, time series, …
</ul>
<br>
<img src="img/hexagons_3d_white_outlier.png" class="stretch">
</section>
<section>
<h2>GRASS GIS 8</h2>
<ul>
<li>Roadmap:
<ul>
<li>7.8.6 Fall 2021
<ul>
<li>Old but still good.</li>
</ul>
</li>
<li>8.0.0 Fall 2021
<ul>
<li>First release in the new era.</li>
</ul>
</li>
<li>8.0.1 Winter 2021
<ul>
<li>What did we miss?</li>
</ul>
</li>
<li>8.2.0 Spring 2022
<ul>
<li>Enjoy the GSoC 2021 results!</li>
</ul>
</li>
</ul>
</li>
</ul>
<br>
<img src="img/splash_screen.png" class="stretch">
</section>
<section>
<h1>New Era</h1>
</section>
<section>
<h2>Improved First-time User Experience</h2>
Initial project sets up automatically and suggestions for next steps are provided.
<br>
<img src="img/first-time_user_world.png" class="stretch">
<p>
by Linda Kladivova &
rest of the community (many reviews, video calls, user surveys, …)
</p>
</section>
<section>
<h2>No Startup Screen</h2>
<img src="img/grass_startup_gone.png" class="stretch">
</section>
<section>
<h2>Single-Window GUI</h2>
<p>
Ongoing code refactoring to enable a single-window GUI with dockable widgets.
</p>
<img src="img/single_window_proposal.png" class="stretch">
<p>Opt-in preview coming in 8.2.</p>
<p>See talk <em>I hated the way GRASS started so I changed it.</em> <small>2021-09-30, 08:00</small></p>
<p>by Linda Kladivova</p>
</section>
<section>
<h2>Centralized Data Management</h2>
All data manipulation centered around revamped <em>Data</em> tab.
<br>
<img src="img/data_catalog_isolines.png" class="stretch">
<p>by Linda Kladivova, Anna Petrasova, Vaclav Petras
</section>
<section>
<h2>Dark Theme Support</h2>
Interface respects system dark theme.
<br>
<img src="img/dark_theme_v_clip.png" class="stretch">
<p>by Anna Petrasova, Nicklas Larsson
</section>
<section>
<h2>GitHub-centered Software Development</h2>
<ul>
<li>Git</li>
<li>PRs</li>
<li>Issues</li>
<li>GitHub Actions</li>
</ul>
<br>
<img src="img/octocat.png" class="stretch">
</section>
<section>
<h2>Improved and Robust Code Quality Checks</h2>
<ul>
<li>Python code formatted by Black.</li>
<li>Python code checked against Flake8.</li>
<li>Most of warnings in C code removed and now checked.</li>
<li>Code tested with CodeQL.</li>
</ul>
<img src="img/code_in_vscodium.png" class="stretch">
<p>by Nicklas Larsson, Vaclav Petras, Anna Petrasova, Carmen Tawalika, ...
</section>
<section>
<h2>Docker Containers</h2>
<br>
<ul>
<li>Different flavours <small>(add or suggest more!)</small></li>
<li>Built and updated automatically</li>
</ul>
<img src="img/grass_docker.png" class="stretch">
</section>
<section>
<h2>actinia</h2>
<ul>
<li>REST API</li>
<li>3rd party project, open source</li>
<li><a href="https://github.com/mundialis/actinia_core">github.com/mundialis/actinia_core</a></li>
</ul>
<img src="img/actinia_logo.svg" class="stretch">
<p>See talk <em>News from actinia</em> <small>(2021-09-30, 09:30)</small></p>
<small>by Markus Neteler, Carmen Tawalika, Anika Weinmann, …</small>
</section>
<section>
<h2>Improved HPC Readiness</h2>
<ul>
<li><a href="https://github.com/ncsu-geoforall-lab/grass-gis-on-hpc-henry2">Recipes for High Performance Computing setups</a></li>
<li>Better integration with conda environments</li>
</ul>
<img src="img/skyview.png" class="stretch">
<small>by Vaclav Petras, Markus Neteler, Nicklas Larsson, …</small>
</section>
<section>
<h2>Grassy the Hungry Cow</h2>
<pre style="font-size: 100%;">
-----------------------------------
| I'm always hungry for more GRASS! |
-----------------------------------
\ ^__^
\ (oo)\_______
(__)\ )\/\
||----w |
_\|/__\|/__\|/_ || || _\|/__\|/_
</pre>
<p>
<small>Thanks to <em>cowsay</em>.</small>
</p>
</section>
<section>
<h1>More Improvements</h1>
</section>
<section>
<h2>Lidar Data Import with PDAL</h2>
<ul>
<li>binning using any point dimension <small>(including user defined ones, e.g., from PDAL filters)</small></li>
<li>point filtering by values in any dimension</li>
<li>support of 19 binning methods <small>(including eigenvalues)</small></li>
</ul>
<img src="img/elevation.png" class="stretch">
<p>by Vaclav Petras and Maris Nartiss</p>
</section>
<section>
<h2>Latest PROJ and GDAL</h2>
<ul>
<li>Support for PROJ >=6 added.</li>
<li>Support for GDAL >=3 added.</li>
<li>WKT2 can be used for CRS definitions.</li>
<li>High-accuracy coordinate transformations supported.</li>
</ul>
<img src="img/natural_europe.png" class="stretch">
<p>by Markus Metz</p>
<aside class="notes">
GRASS is currently supporting the latest versions of PROJ and GDAL.
All the fancy new high-accuracy coordinate transformation methods are supported.
The WKT2 can be used to define a CRS and is printed as CRS info by g.proj.
Some new PROJ 8 functionality is not yet supported.
For example, automated download of datum transformation grids is yet missing.
</aside>
</section>
<section>
<h2>Skeletons and Centerlines</h2>
<em>v.voronoi</em> tool can now create area skeletons and centerlines.
<img src="img/lake_skeleton_naip.png" class="stretch">
<p>by Markus Metz
</section>
<section>
<h2>Semantic Labels for Rasters</h2>
<ul>
<li>add a <em>semantic label</em> to any raster map <small>(e.g., <code>S2_1</code> or <code>red</code>)</small></li>
<li>image classification use sematic labels to identify bands</li>
<li>new <em>portable signature files</em> created as a result of training use it to identify bands</li>
<li>different scenes can then be classified if semantic labels are the same</li>
</ul>
<br>
<img src="img/i_superpixels_slic_ndvi.png" class="stretch">
<p>by Maris Nartiss and Martin Landa</p>
</section>
<section>
<h2>Faster External Data Links</h2>
<em>r.external</em> links (opens) external raster data (GeoTiffs, …) faster.
<br>
<small>(2-5× faster, or almost no time for some workflows)</small>
<br>
<img src="img/r_external_us.png" class="stretch">
<p>by Markus Metz</p>
<p>Great for workflows when only portion of the data is processed in GRASS GIS.</p>
</section>
<section>
<h1>More to Come in 8.2</h1>
</section>
<section>
<h2>OpenMP parallelization</h2>
<p>
r.series, r.univar, r.neighbors, r.patch, r.resamp.interp, r.resamp.filter, r.mfilter, r.slope.aspect + benchmarking library
</p>
<img src="img/openmp_graph.png" class="stretch">
<p>by Aaron Saw Min Sern (Google Summer of Code 2021)</p>
<aside class="notes">
<ul>
<li>Parallelization of multiple, often used raster modules, with benchmarks.</li>
<li>Especially useful for big data processing</li>
<li>Can work on all platforms, providing GRASS is compiled with OpenMP</li>
</ul>
</aside>
</section>
<section>
<h2>Integration with Jupyter Notebooks</h2>
<p>
New Python library that simplifies the launch of GRASS GIS in Jupyter and the display of vector & raster data.
</p>
<img src="img/jupyter_interactive.png" class="stretch">
<p>by Caitlin Haedrich (Google Summer of Code 2021)</p>
<aside class="notes">
<ul>
<li>Simpler GRASS GIS initialization</li>
<li>More intuitive API for rendering</li>
<li>Classic rendering with d.* commands, rendering with webmap and zooming, also 3D rendering</li>
<li>Available now as experimental, coming in 8.2 officially</li>
</ul>
</aside>
</section>
<section>
<h2>Spatial Query of Projections</h2>
Select a CRS spatially on a map.
<br>
<img src="img/proj_picker.png" class="stretch">
<p>by Huidae Cho and Owen Smith</p>
</section>
<section>
<h1>Much More by Broader Community</h1>
</section>
<section>
<h2>Valley Bottom Flatness Index</h2>
<p><em>r.valley.bottom</em> - Multi-resolution Valley Bottom Flatness (MrVBF)</p>
<img src="img/r_valley_bottom_3d.png" class="stretch">
<p>by Helmut Kudrnovsky, Steven Pawley
</section>
<section>
<h2>Hydrologic Parameters Using a Flow Direction Raster</h2>
<em>r.accumulate</em> - weighted flow accumulation, subwatersheds, stream networks, and longest flow paths using a flow direction
<br>
<img src="img/subwatersheds.png" class="stretch">
<p>
<small>
See
<em>Physically-Based Hydrologic Modeling Using GRASS GIS</em>
<small>
(FOSS4G 2021 workshop,
<a href="https://github.com/HuidaeCho/foss4g-2021-r.topmodel-workshop">material</a>)
</small>
</small>
</p>
<p>by Huidae Cho</p>
</section>
<section>
<h2>Weighted layers for dasymetric mapping</h2>
<p><em>r.area.createweight</em> - Weighting layer for dasymetric mapping using a random forest regression model.</p>
<img src="img/r_area_createweight.png" class="stretch">
<p>
See talk <em>A tool for machine learning based dasymetric mapping approaches in GRASS GIS</em>. <small>(2021-09-30, 08:00)</small>
</p>
<p>by Charlotte Flasse, Tais Grippa, Safa Fennia</p>
</section>
<section>
<h2>Sentinel, THREDDS, …, netCDF</h2>
<p>
Automated download and import of common datasets
<small>
i.sentinel, i.modis, i.landsat, r.in.usgs, r.in.nasadem, m.crawl.thredds, t.rast.import.netcdf, …
</small>
</p>
<img src="img/usgs_ned_naip_3d.png" class="stretch">
<p>
<small>
See talks
<em>Sentinel processing in GRASS GIS: A growing toolset for downloading, preprocessing and multitemporal analysis of Copernicus Sentinel data</em> <small>(2021-10-01, 08:00)</small>
and
<em>Cold war reconnaissance imagery reloaded: orthorectifying the 1960s in high resolution</em> <small>(2021-09-29, 11:00)</small>
</small>
</p>
<p>
<small>
by
Fondazione Edmund Mach,
OpenGeoLabs,
mundialis
GSoC,
NC State University,
CONICET,
Norwegian Institute for Nature Research,
<!--
Luca Delucchi (Fondazione Edmund Mach),
Martin Landa (OpenGeoLabs),
Anika Weinmann (mundialis),
Guido Riembauer (mundialis),
Roberta Fagandini (GSoC),
Zechariah Krautwurst (GSoC),
Anna Petrasova (NC State University),
Vaclav Petras (NC State University),
Veronica Andreo (CONICET),
Stefan Blumentrath (Norwegian Institute for Nature Research - NINA)
-->
…
</small>
</p>
</section>
<section>
<h2>FUTURES</h2>
<p><em>r.futures</em> - set of tools for urban growth modeling</p>
<img src="img/FUTURES_Raleigh.png" class="stretch">
<p>by NC State Center for Geospatial Analytics</p>
</section>
<section>
<h2>PoPS</h2>
<p><em>r.pops.spread</em> - Pest or Pathogen Spread simulation</p>
<img src="img/pops_version_1.png" class="stretch">
<p>by NC State Center for Geospatial Analytics
</section>
<section>
<h2>Tangible Landscape</h2>
<p>Geospatial tangible user interface</p>
<img src="img/cli_tangible.png" class="stretch">
<p>by NC State Center for Geospatial Analytics</p>
</section>
<section>
<h2>Resources</h2>
<ul>
<li>
Documentation:
<ul>
<li><a href="https://grass.osgeo.org/learn/">Learn center</a></li>
<li>See <a href="https://grass.osgeo.org/grass-stable/manuals/graphical_index.html">full list of core tools</a>
<li>See <a href="https://grass.osgeo.org/grass-stable/manuals/addons">tools in Addons repository</a>
</ul>
<li>
Tutorials <small>(my three favorites)</small>:
<ul>
<li>
<a href="https://github.com/petrasovaa/grass-gis-workshop-FOSS4G-2021">From Beginner to Power User <small>with Jupyter (FOSS4G 2021)</small></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="http://ncsu-geoforall-lab.github.io/grass-temporal-workshop/">
Spatio-temporal data handling and visualization</a>
</ul>
<li>
Books:
<ul>
<li>Open Source GIS: A GRASS GIS Approach <small>(the classic)</small>
<li>Tangible Modeling with Open Source GIS <small>(use-case-based with additional flavors)</small>
<li>Open Source Approaches to Spatial Data Handling <small>(broader context)</small>
</ul>
</ul>
</section>
<section>
<h1>Get involved!</h1>
</section>
<section>
<h2>Code contributions</h2>
<p>
GRASS GIS development is GitHub-centered:
<br>
core, addons, website
</p>
<ul>
<li>
To create your own tools, see this tutorial for a guideline:
<em><a href="https://github.com/wenzeslaus/python-grass-addon">How to write a Python GRASS addon</a></em>.
</li>
<li>To get involved, join a community sprint.</li>
</ul>
<img src="img/octocat.png" class="stretch">
</section>
<section>
<h2>Other contributions are relevant too!</h2>
<ul>
<li>Translation: Use <a href="https://www.transifex.com/grass-gis/">Transifex.</a></li>
<li>Documentation: Fix typos in manual pages, add examples, write <a href="https://grasswiki.osgeo.org/wiki/GRASS-Wiki">wiki</a> tutorials, …</li>
<li>Post material to GRASS social media.
<li>Write a blog post for GRASS website.</li>
<li>Bring your own ideas!</li>
</ul>
<img src="img/bonn_osgeo_code_sprint_2018_fotowall.jpg" class="stretch">
</section>
<section>
<h2>Sponsoring</h2>
<ul>
<li>Money and employee time donations are very important for GRASS GIS development. You can:</li>
<ul>
<li>organize or finance community sprints</li>
<li>contribute to infrastucture needs <small>(e.g., website)</small></li>
<li>pay developers <small>to implement new features and fix specific bugs</small></li>
</ul>
<li>New: <a href="https://opencollective.com/grass">opencollective.com/grass</a></p></li>
</ul>
<img src="img/osgeo_codesprint_2018.jpg" class="stretch">
</section>
<section>
<h2>Community Sprint</h2>
<p>
Meet the GRASS team at the <a href="https://wiki.osgeo.org/wiki/FOSS4G_2021/Community_sprint">FOSS4G 2021 Community Sprint</a>!
<br>
Saturday, October 2nd, 2021
</p>
<img src="img/bonn_osgeo_code_sprint_2018.jpg" class="stretch">
</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://twitter.com/vaclavpetras/"><small>Twitter:</small> vaclavpetras</a>
<br>
<a href="https://www.linkedin.com/in/vaclav-petras-a24a1b114/"><small>LinkedIn:</small> Vaclav Petras</a>
</p>
<p>
<a href="https://wenzeslaus.github.io/grass-gis-talks/foss4g2021.html">wenzeslaus.github.io/grass-gis-talks</a>
</section>
</div>
</div>
<!-- reveal internal plugins -->
<script src="reveal/reveal.js"></script>
<script src="reveal/plugin/notes/notes.js"></script>
<script src="reveal/plugin/markdown/markdown.js"></script>
<script src="reveal/plugin/highlight/highlight.js"></script>
<script src="reveal/plugin/math/math.js"></script>
<!-- extra plugins -->
<script src="reveal_plugins/chalkboard/plugin.js"></script>
<script>
// Full list of configuration options available here:
// https://github.com/hakimel/reveal.js#configuration
Reveal.initialize({
hash: true,
// Display controls in the bottom right corner
controls: true,
// Display a presentation progress bar
progress: true,
center: true,
// Display the page number of the current slide
slideNumber: false,
// Enable the slide overview mode
overview: true,
// Turns fragments on and off globally
fragments: true,
// The "normal" size of the presentation, aspect ratio will be preserved
// when the presentation is scaled to fit different resolutions. Can be
// specified using percentage units.
// width: 960,
// height: 700,
// Factor of the display size that should remain empty around the content
margin: 0.05, // increase?
// Bounds for smallest/largest possible scale to apply to content
minScale: 0.5,
maxScale: 5.0,
// Push each slide change to the browser history
history: true,
// Enable keyboard shortcuts for navigation
keyboard: true,
// Vertical centering of slides
center: true,
// Enables touch navigation on devices with touch input
touch: true,
// Loop the presentation
loop: false,
// Flags if the presentation is running in an embedded mode,
// i.e. contained within a limited portion of the screen
embedded: false,
// Number of milliseconds between automatically proceeding to the
// next slide, disabled when set to 0, this value can be overwritten
// by using a data-autoslide attribute on your slides
autoSlide: 0,
// Stop auto-sliding after user input
autoSlideStoppable: true,
// Enable slide navigation via mouse wheel
mouseWheel: false,
// Hides the address bar on mobile devices
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(' + 'reveal_plugins/' + 'img/boardmarker-red.png), auto'},
{ color: 'rgba(255,140,0,1)', cursor: 'url(' + 'reveal_plugins/' + '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>