wiki:Grass7/NewFeatures74

Version 31 (modified by veroandreo, 7 years ago) ( diff )

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This is a DRAFT page for the future release of GRASS GIS 7.4

List of new features in GRASS GIS 7.4

AT TIME: trunk

GRASS GIS 7.4 is the version of active development with a first 7.4.0 stable release in December 2017. In total, it comes with more than XXX fixes and improvements with respect to the stable releases 7.2.x. The development was officially moved to a dedicated release branch in XXX (rXXX). This page summarizes the manifold new features which have been added to GRASS 7.4.

Table of Contents

    1. What's new in a nutshell
    2. Releases
  2. Graphical User Interface
  3. Modules (commands)
    1. Display modules
    2. General modules
    3. Raster modules
    4. Raster3D modules
    5. Vector modules
    6. Imagery modules
    7. Temporal GIS modules
    8. Scripting
  4. User Manuals - Documentation
  5. GRASS 7 Library changes
  6. Source Code Portability
  7. GRASS GIS 7.4 Addons
  8. Migrating from GRASS GIS 6 to version 7.x

Startup screen of GRASS GIS 7.2.0

What's new in a nutshell

After almost XXX years of development the new stable major release GRASS GIS 7.4 is available. The quick brown fox jumps over the lazy dog. The quick brown fox jumps over the lazy dog. The quick brown fox jumps over the lazy dog. For details see below.

Releases

Graphical User Interface

GRASS GIS 7.4 graphical user interface comes with a new ....

  • Data Catalog (available in the Data tab) can now move and copy data between mapsets and locations, reproject rasters and vectors. This can be performed using right mouse click or drag and drop.
  • Show computational region function is now available also from menu Settings > Computational region > Show current region extent in Map Display.
  • Selected sample locations can be now downloaded from the Startup windows using a Download button next to location selection.
  • The GRASS GIS Spatial Database Directory is now automatically filled (if available on disk) when user starts GRASS GIS for the first time.
  • Access errors for creating location are now shown in the GUI instead of a traceback in the command line.
  • Map Display title is now more readable and says GRASS GIS Map Display: name - location/mapset.
  • Simple Python Editor is now available from the File menu.

Modules (commands)

A series of new modules has been added and many improved.

Display modules

  • ...

General modules

New:

  • G74:...

Improved:

  • G7:g.proj: When a new location is created from vector data, use the default region s=0 n=1 w=0 e=1 res=1 to avoid potentially invalid region settings (r71491)

Raster modules

New:

  • fixed longitude wrapping for lat/lon locations
  • support import of raster maps exceeding 90N or 90S or with an EW extent larger than 360 degrees
  • lat/lon: automatically fix floating point precision errors in the grid geometry of imported raster maps created with GIS software that uses limited floating point precision (common problem).
  • G7:r.regression.multi: added RMSE and MAE estimation
  • G7:r.what: added new -v flag to return also vector category

Improved:

  • G7:r.clump: fuzzy clumping, multispectral clumping, minimum clump size
  • G7:r.sim.water: added parallelization support
  • G7:r.sim.sediment: added parallelization support
  • G7:r.in.lidar: added -d flag to use base raster resolution instead of computational region
  • G7:r.import: added support to subset to region boundaries when importing (extent=region)
  • G7:r.mapcalc: implemented computational region settings based on disjoint union and intersection computation from all input raster maps in an expression

Raster3D modules

New:

Vector modules

New:

Improved

  • G7:v.in.ogr: Fix import of OSM data (r71464)
  • G7:v.in.ogr: When a new location is created, use the default region s=0 n=1 w=0 e=1 res=1 to avoid potentially invalid region settings (r71490)
  • G7:v.in.ogr: Support new curve geometry types starting with GDAL 2.0 (r71508, r71514)
  • G7:v.in.ogr: code restructuring (r71550)
    • projection checks are now performed for all input layers, not only the first layer
    • projection checks are a bit more strict and more verbose in case of trouble
    • the new GDAL 2.2 API is used where possible, avoiding deprecated functions
    • OSM import is properly working, also with spatial filters and with GDAL < 2.2
    • attribute import and table creation is finished before cleaning to avoid lengthy cleaning if tables can not be created, and to avoid a rare segfault when opening a GRASS database driver
    • the code has been restructured to make it a bit less unreadable and to fix the logic of steps (e.g. check output only if output is created)
  • G7:v.rast.stats: added new -d flag for line densification (as in G7:v.to.rast) and corresponding tests

Imagery modules

New:

Temporal GIS modules

Scripting

New:

  • PyGRASS:
    • MultiModule class
    • fix _check function to not raise an Error when iterating over available mapsets in a location if a non valid mapset exists

User Manuals - Documentation

GRASS 7 Library changes

  • Temporal framework:
    • Implemented temporal algebra complement tests that show the current condition bugs
    • Added spatial topological operators to the temporal algebra (r71369)
    • temporal framework: Tests regarding implicit temporal aggregation
    • improved gran_to_gran function to return correctly years and second values
    • added function to convert granularity to a smaller granularity
  • projlib:
    • added GPJ_grass_to_wkt2() and GPJ_grass_to_osr2()
  • python vector scripting library:
    • added layer variable to vector_info and vector_info_topo functions

Source Code Portability

...

GRASS GIS 7.4 Addons

More than XXX new addons are now enlarging the already impressive list of extensions available:

Migrating from GRASS GIS 6 to version 7.x

  • see here for changes in parameter names and changed flags
  • see here for removed modules and renamed modules
  • see here for renamed options

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