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- == GRASS GIS topology management == === Topology general characteristics === ...4 KB (594 words) - 07:36, 10 October 2023
- ...What would be the 'recommended' way of dealing with the 'errors' found in vector data which were created with zero topological restrictions (and saved as .s A hint for snapping: {{cmd|v.in.ogr}} suggest for vector data with topological errors a range of <nowiki>[1e-08, 1]</nowiki> for sui ...6 KB (1,018 words) - 13:02, 5 April 2020
- ...rass70/manuals/vectorintro.html#vector-model-and-topology Vector model and topology] * [[Vector topology cleaning]] ...4 KB (664 words) - 15:13, 22 July 2016
Page text matches
- == GRASS GIS topology management == === Topology general characteristics === ...4 KB (594 words) - 07:36, 10 October 2023
- '''Q:''' How can I patch several vector map together, i.e. merge them? Especially SHAPE files? '''A 1:''' To patch vector maps in GRASS: ...2 KB (316 words) - 11:25, 22 December 2014
- ...vector data (from GRASS GIS 6) in GRASS GIS 7 the user has to rebuild the topology. Additionally it is recommended to switch the database backend from DBF fil == Convert automatically all GRASS 6 vector maps to GRASS 7 (including attribute transfer from DBF to SQLite) == ...2 KB (324 words) - 10:41, 4 December 2018
- * Intro to [[Vector Database Management|vector data model]] (with drawing) * [[Vector topology cleaning]] ...2 KB (272 words) - 10:28, 4 December 2018
- '''Vector:''' You need to rebuild the topology with {{cmd|v.support|version=54}}. ...ve been deprecated and are handled as vector points. Convert sites maps to vector maps with [https://old.grass.osgeo.org/grass64/manuals/v.in.sites.html v.in ...2 KB (397 words) - 21:14, 24 June 2021
- '''Q:''' How to show vector map labels * After Importing the data, if a vector file run v.support option=build. ...863 bytes (143 words) - 07:49, 12 December 2006
- ...GIS 6. To be able to use imported data in GRASS GIS 6, just rebuild vector topology (e.g., {{cmd|v.build}}). [[Category: Vector]] ...781 bytes (132 words) - 20:05, 18 September 2016
- ...he Spearfish sample dataset in GRASS 6.4 to reduce the node coordinates of vector polygons (''areas'') to three decimal digit precision: ...preserved, but it is worth paying close attention to the verification and topology-building messages upon import. (in case of errors make sure that the origin ...1 KB (223 words) - 22:45, 23 April 2018
- * {{Cmd|v.out.vtk}} - export vector maps for VTK ...RASSBrige provides a VTK/C++ interface to most of the GRASS GIS raster and vector C library functions. Its using an intuitive class structure to hide the com ...3 KB (490 words) - 00:37, 19 June 2013
- =Vector Maps= ==Vector Geometries== ...4 KB (620 words) - 15:14, 17 July 2012
- == Option to reduce memory consumption for vector topology == ...n cause problems such as out-of-memory errors or freezing the machine if a vector module uses up all system memory and goes into swap space. ...2 KB (348 words) - 14:54, 8 May 2017
- * Draw a 1 km x 1 km grid ({{cmd|d.grid}}), and overlay the {{cmd|v.mkgrid}} vector map (area fill = none, or only display boundary features, colored red or so * Generate a region that defines the required grid topology: extent, cell size, origin ...1 KB (211 words) - 15:49, 26 August 2010
- * [[#Link to GRASS|link]] PostGIS data as GRASS vector maps * {{cmd|vectorintro|desc=Vector data processing in GRASS GIS}} help page ...6 KB (973 words) - 03:12, 23 January 2017
- ...It's available in '''PostGIS 2.0 and later'''. GRASS GIS supports PostGIS Topology in version '''GRASS 7.0 and later''' through [http://trac.osgeo.org/grass/w ...ta/osgeorel/2013-04-fem-gis/landa-fem-gis-2013-04.pdf Working with PostGIS Topology in GRASS GIS] ([http://gis.cri.fmach.it/news/47/15/Seminar-Advances-in-GIS- ...15 KB (1,952 words) - 21:55, 6 November 2017
- ...rass70/manuals/vectorintro.html#vector-model-and-topology Vector model and topology] * [[Vector topology cleaning]] ...4 KB (664 words) - 15:13, 22 July 2016
- ...What would be the 'recommended' way of dealing with the 'errors' found in vector data which were created with zero topological restrictions (and saved as .s A hint for snapping: {{cmd|v.in.ogr}} suggest for vector data with topological errors a range of <nowiki>[1e-08, 1]</nowiki> for sui ...6 KB (1,018 words) - 13:02, 5 April 2020
- * Raster / vector processing * 3D raster / vector modelling ...2 KB (228 words) - 20:31, 2 September 2018
- ...GRASS maps are identical. It uses the MD5 cryptographic hash function. For vector map layers it does not check if the attribute table(s) are identical, too. ...pression. Optionally, a prefix can be added to all files copied and vector topology can be rebuilt to match currently running version of GRASS. ...2 KB (400 words) - 07:31, 25 June 2020
- ==Vector data management== ===Importing Vector data=== ...8 KB (893 words) - 21:41, 24 March 2014
- ...miliarize you with the improved functionality and will focus on raster and vector data management as well some basic spatial data analysis. New developments in GRASS GIS have made major improvements to the vector ...6 KB (852 words) - 08:29, 30 July 2013
- = Vector Data Structures = ...underlying theories (e.g. linear algebra, graph theory, network theory) of vector data can already lead to great confusion. ...10 KB (1,553 words) - 19:53, 2 September 2012
- * vector lib topology: R*-tree '''Vector data operations''': ...11 KB (1,603 words) - 14:00, 27 February 2021
- {{AddonSrc|vector|v.area.weigh|version=7}} creates a raster surface from vector areas using known cell weights and preserving the value of the area attribu {{AddonSrc|vector|v.build.pg|version=7}} builds PostGIS topology for feature tables linked via v.external. ...7 KB (1,085 words) - 07:25, 25 June 2020
- ...al index. Finally, there are a series of new modules to analyse raster and vector data; some of the already existing modules were improved and made faster (s ...3 KB (392 words) - 21:21, 19 August 2014
- * In GRASS Toolbox click on Add GRASS vector layer tool: (screenshot) * In the 'Select GRASS vector layer select in the Map name combobox map roads and in the Layer combobox s ...12 KB (1,972 words) - 05:44, 6 July 2017
- This page covers core functionality of [[wxGUI]] '''vector digitizer''', explains its usage for newcomers. * see also [[:Category:Vector|other vector related pages]] ...11 KB (1,434 words) - 09:46, 5 March 2014
- ...rnal raster and vector data in GRASS 7. See also [[PostGIS]] and [[PostGIS Topology]]. == Vector data == ...9 KB (1,357 words) - 09:15, 8 May 2018
- ...ac.osgeo.org/grass/browser/grass/trunk/doc/python/vector_example_ctypes.py vector] sample scripts. (GRASS 7) == Vector == ...5 KB (712 words) - 10:02, 20 May 2012
- * [http://www.gdal.org/ogr/ogr_formats.html Supported vector formats] via {{cmd|v.import}} (for example importing Shapefiles) * Vector formats: File → Import vector data (internally using OGR) ...6 KB (1,054 words) - 11:50, 20 January 2023
- | Type of Map: vector (level: 2) | Building topology for vector map <boundary_county>... ...8 KB (952 words) - 14:21, 4 August 2016
- Dla wektorów: Plik → Import vector data using OGR ...add it to the Layer Manager with the grid-like button with a (+), to add a vector map to the Layer Manager use the button with lines and points on it to the ...5 KB (835 words) - 14:00, 22 August 2016
- | Title: || '''Temporal GIS Algebra for raster and vector data in GRASS ''' ...API to create spatio-temporal vector and raster algebra to process massive vector and raster datasets based on their spatio-temporal relationships. ...29 KB (4,404 words) - 16:00, 26 August 2014
- * Allow display of a vector legend in the map display (equivalent to current {{cmd|d.legend}} implement === Vector === ...15 KB (2,313 words) - 21:16, 28 May 2013
- == Vector == ...raster equivalent version of the CORINE2000 map derived from the seamless vector database is of 100m pixel resolution [see Raster data section below]. Never ...11 KB (1,617 words) - 03:47, 2 July 2019
- # A similar tool for vector data would also be very nice, which would simply store the colors in the GR ...lp with interpolation to deal with missing values, etc. A SQL based raster/vector map management is desired. ...15 KB (2,389 words) - 04:25, 6 February 2014
- * {{cmd|v.in.ogr}} or → <u>underlying vector library functions to build topology and spatial index</u> ← ...4 KB (653 words) - 11:39, 4 April 2016
- : ''('''t''' in minutes; '''points''': number of vector points)'' Interpolation large DEMs from large amounts of vector points requires lot of RAM. Some hints ...6 KB (896 words) - 05:50, 30 June 2017
- # Example for pyGRASS usage - vector API from grass.pygrass.vector import VectorTopo ...18 KB (2,784 words) - 08:20, 8 December 2020
- * {{cmd|v.in.ascii}} - Import data from an ASCII file to GRASS vector format. ...d vector point imports will be limited to a few million data points unless topology and database creation is skipped with the '''-bt''' flags''. It may also be ...28 KB (4,297 words) - 22:50, 11 October 2020
- This tutorial presents and explains the functionality of GRASS vector module ''v.generalize''. This module implements generalization operators for GRASS vector maps. The topics covered in this tutorial are: simplification, smoothing, n ...18 KB (2,757 words) - 10:32, 4 December 2018
- === Vector === ...}}). This probably isn't enough for a full SoC project, so in addition the vector engine should be audited for places where memory optimization could take pl ...10 KB (1,553 words) - 14:47, 27 June 2014
- * vector/v.label.sa see {{trac|1942}} and {{rev|34923}}. It probably shouldn't be de ...management (truncating long history, odd storage). It should work like for vector maps in GRASS 6. ...28 KB (4,409 words) - 21:04, 23 May 2019
- ...a consistency (coordinate system and topology) and has unified approach to vector, raster and 3D raster data. ...anuals/g.rename.html g.rename] for changing names of individual raster and vector maps ...9 KB (1,419 words) - 02:27, 13 January 2016
- ...thon.org/urls/raw.github.com/zarch/workshop-pygrass/master/02_Vector.ipynb Vector] g.copy(vector=(vectinmap,vectoutmap)) ...17 KB (2,568 words) - 21:30, 1 December 2023
- ...box concept, vector engine in GRASS 7, wxGUI, PostGIS Topology support, 3D topology | vector engine in GRASS 7, image processing, orthorectification ...16 KB (2,376 words) - 23:55, 19 February 2016
- aspects, in the form of raster and vector maps. In GRASS GIS, vector to attribute links are done through a database connection, ...57 KB (7,187 words) - 17:12, 9 February 2018
- === Vector MapObject === For the vector we can add some particular attributes and methods. ...40 KB (5,278 words) - 21:22, 27 May 2013
- ...ata processing. It supports large raster files (billions of cells), vector topology, coupling with databases, and 64 bit memory. New code based on recent resea ...ented in 1989 and extended for massive datasets in 2011. Similarly, vector topology cleaning was introduced in 2002, updated over time and substantially improv ...17 KB (2,413 words) - 03:04, 3 March 2019
- ...ac.osgeo.org/grass/browser/grass/trunk/doc/python/vector_example_ctypes.py vector] example Sample script for vector access (use within GRASS, Spearfish session): ...16 KB (1,666 words) - 08:51, 4 June 2013
- | v. || vector processing || ''{{cmd|v.surf.rst}}'': surface interpolation ...ts function, for example ''v.in.lidar'' starts with ''v'' so it deals with vector maps, the name follows with ''in'' which indicates that the module is for i ...55 KB (8,966 words) - 03:13, 2 May 2018
- ...ra. Experimental features available for download now include concave hull, vector algebra, ground point cloud classification, DEM fusion and blending, object ...14 KB (2,064 words) - 16:48, 11 February 2021
- from grass.pygrass.vector import VectorTopo from grass.pygrass.vector import VectorTopo ...26 KB (3,839 words) - 07:30, 22 July 2022
- ..., Topology, Cleaning, Overlays, Attributes, Spatio-Temporal Data Analysis, Vector Network Analysis, Landscape Structure ...10 KB (1,482 words) - 03:03, 3 March 2019
- ...e specifically for managing temporal and spatial extent including temporal topology. * Space time vector datasets ('''stvds''') are designed to manage vector map time series. Modules that process stvds have the naming prefix ''t.vect ...47 KB (7,425 words) - 17:55, 20 December 2022
- * Discuss improvements in GRASS 7 vector engine (OGR support, lightweight topology structures, better 3D support) * {{done}} Discuss fundamental changes in raster and vector engine for GRASS 8 ...18 KB (2,655 words) - 23:54, 19 February 2016
- The GUI interface allows you to display raster, vector data as well as navigate through zooming in and out. More advanced explorat | v.* || vector processing || ''{{cmd|v.clean}}'': topological cleaning ...40 KB (6,327 words) - 18:08, 14 September 2020
- * Moving the ilist functionality from the vector library to the gis library [http://trac.osgeo.org/grass/changeset/51796] |Toolbox concept, vector engine in GRASS 7, wxGUI, PostGIS Topology support ...16 KB (2,418 words) - 23:54, 19 February 2016
- g.region vector=lakes g.region vector=lakes res=10 -a -p ...45 KB (7,525 words) - 21:05, 3 August 2017
- # import KML without generating topology (-c flag) ...erning the black border around the scene data: you can use the "footprint" vector map which can be generated during the {{AddonCmd|i.sentinel.download}} step ...32 KB (4,993 words) - 13:50, 17 February 2021