= GRASS GIS 7.8.6 =

[[TOC]]

A short summary of changes: '''[wiki:Grass7/NewFeatures78 New features in GRASS 7.8]'''

=== Releases ===

==== Stable Release ====

 * Release date: ''10 Oct 2021''
 * Changelog: https://grass.osgeo.org/grass78/source/ChangeLog_7.8.6.gz
 * Binaries: ​https://grass.osgeo.org/download/software/#g78x
 * Source code:
   * https://github.com/OSGeo/grass/releases/tag/7.8.6
   * https://grass.osgeo.org/grass78/source/grass-7.8.6.tar.gz ([https://grass.osgeo.org/grass78/source/grass-7.8.6.md5sum md5sum])

==== Release Candidate 3 (RC3) ====

 * Release date: ''01 Oct 2021''
 * Changelog: https://grass.osgeo.org/grass78/source/ChangeLog_7.8.6RC3.gz
 * Binaries: ​https://grass.osgeo.org/download/software/#g78x
 * Source code:
   * https://github.com/OSGeo/grass/releases/tag/7.8.6RC3
   * https://grass.osgeo.org/grass78/source/grass-7.8.6RC3.tar.gz ([https://grass.osgeo.org/grass78/source/grass-7.8.6RC3.md5sum md5sum])

==== Release Candidate 2 (RC2) ====

 * Release date: ''10 Aug 2021''
 * Changelog: https://grass.osgeo.org/grass78/source/ChangeLog_7.8.6RC2.gz
 * Binaries: ​https://grass.osgeo.org/download/software/#g78x
 * Source code:
   * https://github.com/OSGeo/grass/releases/tag/7.8.6RC2
   * https://grass.osgeo.org/grass78/source/grass-7.8.6RC2.tar.gz ([https://grass.osgeo.org/grass78/source/grass-7.8.6RC2.md5sum md5sum])

==== Release Candidate 1 (RC1) ====

 * Release date: ''19 May 2021''
 * Changelog: https://grass.osgeo.org/grass78/source/ChangeLog_7.8.6RC1.gz
 * Binaries: ​https://grass.osgeo.org/download/software/#g78x
 * Source code:
   * https://github.com/OSGeo/grass/releases/tag/7.8.6RC1
   * https://grass.osgeo.org/grass78/source/grass-7.8.6RC1.tar.gz ([https://grass.osgeo.org/grass78/source/grass-7.8.6RC1.md5sum md5sum])

=== Git Source Code ===

 * Milestone: [https://github.com/OSGeo/grass/milestone/6?closed=1 "7.8.6"]
 * Release branch created on 4 Aug 2019 (GH d4879d4)
 * Git clone of latest 7.8 release branch (including yet unpublished bugfixes):
{{{ 
  git clone https://github.com/OSGeo/grass.git
  cd grass
  git checkout releasebranch_7_8
}}}

=== Overview of changes ===

The focus of this release are stability fixes. Importantly, PROJ6+ / WKT2 are now supported. Further stability fixes, documentation improvements and updated message translations are included. The raster data link module `r.external` is now notably faster. And a new module to downgrade a temporal DB from version 3 to 2 has been added. Eventually, a series of new add-ons has been made available as well.

The GRASS GIS 7.8.6 release provides more than [https://github.com/OSGeo/grass/compare/7.8.5...7.8.6 149 fixes and improvements] with respect to the release 7.8.5.

==== New modules ====

 * G78:t.downgrade: downgrade a temporal DB from version 3 to 2 (PR:1449)

==== Major module changes ====

(see also below for closed bugs)
 
 * G78:g.extension: updated to match new addon repository structure (PR:1762)
 * G78:g.extension: match module files on Windows (PR:1575)
 * G78:r.external major speed-up (PR:1305)

==== Minor module changes ====

(see also below for closed bugs)

 * NC full sample dataset: new URL (PR:1463)
 * G78:d.mon: do not clear an existing output file on fatal error (PR:1475)
 * G78:g.extension: ignore cruft __pycache__ files (PR:1496)
 * G78:g.proj: fix segfault issue #1163 (PR:1170)
 * G78:g.proj: fix reading input WKT (PR:1582)
 * G78:i.vi: fix check input 'red' param arg (PR:1353)
 * G78:i.vi: fix the check for the existence of the 'redchan' variable (PR:1378)
 * G78:m.proj: fix PROJ URL in error message
 * G78:psdriver: write data to a tempfile before closing (rel78) (PR:1506)
 * G78:r.in.wms: enable !CreateOptions for GDAL driver
 * G78:r.out.gdal: fix xy export (PR:1564)
 * G78:t.register: strip newline from list of maps to avoid error (PR:1295)
 * G78:v.colors: fix v.colors cannot properly copy color table (#1297, PR:1429)
 * G78:v.colors: Fix color inversion (PR:1478, PR:1479)
 * G78:v.import: add layer to the projection check (PR:1328)
 * G78:v.net.visibility: fix coordinates parameter (PR:1336)
 * G78:v.out.ogr: fix xy export (PR:1564)
 * G78:v.patch: v.patch: fix segmentation fault when DB table absent in one input map (#1488, PR:1492)
 * G78:v.surf.idw: less confusing error message (PR:1332)
 * G78:v.surf.idw: fix uninitialized ret value for 2D without column specified (PR:1548)

==== GUI: Improvements in the Graphical User Interface ====

 * wxGUI/dbmgr: fix calculate column values (PR:1370)
 * wxGUI/dbmgr: fix click on the 'Modify layer' button if vector map doesn't have any layers (PR:1334)
 * wxGUI/dbmgr: fix hit 'Refresh' button if vector map doesn't have any layers (PR:1371)
 * wxGUI/dbmgr: fix insert record for each category into table (PR:1333)
 * wxGUI: fix another wx flag assertion error in iclass (PR:1471)
 * wxGUI: fix calling coordselect validator (PR:1455)
 * wxGUI: fix cmd-c closing interactive colour table on mac (PR:1293)
 * wxGUI: fix d.out.file command parsing with --overwrite (PR:1284)
 * wxGUI: Fix key binding issues on mac (PR:818 #1160)
 * wxGUI: fix search field in location wizard (PR:1322)
 * wxGUI: fix validators (partial backport of #1069 and #1418) (PR:1427)
 * wxGUI: fix 'wxPyDeprecationWarning: Call to deprecated item. Use !FindItem instead.' (PR:1344)
 * wxGUI: fix parsing GDAL/OGR formats which contains a colon in a description (PR:1226)
 * wxGUI: fix wx flag assertion error in !DefaultFontDialog (PR:1545) * wxGUI/forms: fix Python 3.8 integer warning (PR:1302)
 * wxGUI: update Slovakia 3D precipitation voxel sample dataset URL (PR:1292)
 * wxGUI/animation: fix 3D rendering (PR:1551)
 * wxGUI/g.extension: fix failure to uninstall addon (PR:1524)
 * wxGUI/dbmgr: fix get statistics for character column type if it contains NULL value (PR:1574)
 * wxGUI/gcmd: fix read command stdout (PR:1228)
 * wxGUI/locwizard: fix flags for wxPython 4.1 (PR:1330)
 * wxGUI/locwizard: fix more flags for wxPython 4.1 (PR:1343)
 * wxGUI/locwizard: remove unneeded +ellps proj4string tag (PR:1550)
 * wxGUI/mapwin: check if '!BufferedMapWindow' instance exist before calling '_runUpdateMap()' method (PR:1456)
 * wxGUI/rlisetup: dissociate the managed window from the manager ('wx.aui.!AuiManager' instance) before destroy wizard window (PR:1196)
 * wxGUI/tplot: fix x, y coordinates validation (PR:1199)
 * wxGUI/vselect: fix delete row from selected features list (PR:1231)
 * wxGUI/WMS: replace broken URLs with alternative WMS (PR:1674)

==== Python scripting ====

 * remove deprecated py 'PIL' module 'fromstring', 'tostring' method call (removed from 'PIL' module version >= 8.0.0) (PR:1223)
 * pygrass: backport #1407 Module fix (PR:1606)
 * ctypes: fix Callable for Python 3.10 (PR:1673)

==== Projection support ====

 * **PROJ6+ / WKT2 support** (PR:1240)
 * libproj: added alias for ITRF92 (PR:1460)
 * libproj: change warning to debug message (PR:1337)
 * lib/proj: fix results for ll equivalents (PR:1444)
 * datum: add support for D_Rauenberg_1983 (PR:1331)

==== GDAL support ====

 * GDAL 3.3.0 introduces the use of standard C bool type, compatibility added (PR:1567)

==== Database support ====

 * n/a

==== Library changes ====

 * make: add support for Makefile variable DESTDIR (PR:1234)
 * libgis: add test for invalid value to parser (PR:1459)
 * libgis: enable the C99 bool type (PR:1567)
 * libgis: fix reading of WKT and SRID
 * libgis: add read/write functions for WKT and srid (PR:976)
 * parser: accept `#-space-%` to allow writing PEP8-compliant Python code (PR:1446)
 * parser: add a standard option for nprocs= (G_OPT_M_NPROCS) (PR:1648, PR:1652)

==== JSON /  REST support ====

 * json parser: fix mapsets in tokenizing (PR:1252)

==== Code quality ====

 * Add missing `#include <stdlib.h>` to display/d.where/main.c. (PR:1377)
 * Allow parsing long GISDBASE paths (PR:1376)
 * Imagery lib: Add notes to documentation about I_get_*2() functions (PR:1250)

==== Unit tests / CI ====

 * CI: make test report available as artifact (PR:1484)
 * !GitHub action CI: drop ubuntu-16.04 (PR:1254)
 * testsuite: fix libgis/parser_json.c and r.fillnull (PR:1346)

==== User Manuals - Documentation ====

 * [https://github.com/OSGeo/grass/blob/main/CONTRIBUTING.md CONTRIBUTING.md]: intro added for newcomers (PR:1566)
 * G78:g.gui manual: example load workspace from command line
 * G78:r.import manual: explain missing resampling methods (PR:1557)
 * r.random*/r.surf.* manuals: examples and screenshots added (PR:1542)
 * G78:r.out.gdal manual: added COG example (PR:1554), fix LZW export example
 * G78:r.series: manual update (PR:1246)
 * G78:r.stream.extract: fix typos in the manual (PR:1352) (PR:1383)
 * G78:t.register manual: add link to r.timestamp
 * G78:t.select manual: add scientific paper ref
 * G78:v.in.ogr manual: update old GDAL links

==== Portability ====

 * attempt to fix #1218 windows does not start (PR:1270)

==== Docker support ====

 * Dockerfile Alpine: fix broken pip six installation (PR:1568, PR:1581)

==== Message Translations ====

 * i18N: sync from Transifex (https://www.transifex.com/grass-gis/grass7/dashboard/) (PR:1520)
 * i18n: Sync from Transifex for rel78 (PR:1340, PR:1466, PR:1593)
 * i18n: Remove duplicate messages from po files (PR:1397)
 * Sync Transifex; labelcolumn => label_column for v.to.rast (PR:1385)
 * Updated translators.csv file (PR:1249)

==== Packaging ====

 * make: Add support for Makefile variable DESTDIR (PR:1234)
   * Hint for Debian:  
{{{
INST_DIR=/usr/lib/$(BASE_NAME) UNIX_BIN=/usr/bin
}}}
   * Hint for other Linux distros: TBD
 * configure: updated to autoconf 2.69 (PR:1867)
=== New Addons since GRASS 7.8.5 ===

{{{
#!htmlcomment
Get from here: ("new addons" tag)
https://github.com/OSGeo/grass-addons/pulls?q=is%3Apr+label%3A%22new+addon%22+is%3Aclosed
}}}
 * G7A:g.projpicker: Queries projection information spatially.
 * G7A:i.gabor: Creates Gabor filter bank for a 2-dimensional image.
 * G7A:i.landsat toolset: G7A:i.landsat.download, G7A:i.landsat.import, G7A:i.landsat.qc
 * G7A:m.csv.clean: Cleaning of CSV files
 * G7A:r.area.createweights: Creates a weighting layer for dasymetric mapping, using a random forest regression model.
 * G7A:r.bearing.distance: Find the bearing and/or straight-line distance from all non-null cells to the specified point.
 * G7A:r.centroids: Creates vector map of centroids from raster of "clumps".
 * G7A:r.centroids: Creates vector map of centroids from raster of "clumps".
 * G7A:r.extract: Extracts specified categories of an integer input map.
 * G7A:r.extract: Extracts specified categories of an integer input map. 
 * G7A:r.in.ogc and G7A:v.in.ogc suites: Import raster and vector data from several OGC API standards 
 * G7A:r.in.ogc, G7A:r.in.ogc.coverages: OGC API support
 * G7A:r.skyline: Compute the skyline index and / or find the horizon cells in a raster viewshed. 
 * G7A:r.suitability.regions: From suitability map to suitable regions.
 * G7A:v.in.csv: Easy import of CSV as vector points
 * G7A:v.in.ogc, G7A:v.in.ogc.coverages: OGC API support
 * G7A:v.percolate: Continuum percolation analysis


=== Closed !GitHub tickets since the last release ===

See [https://github.com/OSGeo/grass/milestone/6?closed=1 GitHub].

For old trac tickets, see below.

==== Closed trac bugs since the last release ====

[[TicketQuery(status=closed&milestone=7.8.6&type=defect&resolution=fixed&order=priority)]]

==== Closed trac wishes since the last release ====

[[TicketQuery(status=closed&milestone=7.8.6&type=enhancement&resolution=fixed&order=priority)]]