Which is the latest version of GRASS GIS?

Note: A new GRASS GIS stable version has been released: GRASS GIS 7.8, available here. v.distance – Finds the nearest element in vector map ‘to’ for elements in vector map ‘from’. Output may be written to stdout using the ‘-p’ flag or uploaded to a new table created by the ‘table’ option; multiple ‘upload’ options may be used.

How are OGR layers imported into a grass vector map?

If several OGR layer names are given, all these layers are imported as separate GRASS layers into one GRASS vector map. The optional spatial parameter defines spatial query extents. This parameter allows the user to restrict the region to a spatial subset while importing the data.

Do you need GDAL to use v.in.ogr?

The OGR (Simple Features Library) is part of the GDAL library, hence GDAL needs to be installed to use v.in.ogr . The list of actually supported formats can be printed by -f flag. Topology cleaning on areas is automatically performed, but may fail in special cases.

Which is the wrapper command for v.in.ogr?

An interesting wrapper command around v.in.ogr is v.import which reprojects (if needed) the vector dataset during import to the projection of the current location. The characters which are eligible for table column names are limited by the SQL standard. Supported are:

GRASS GIS 7.8 is actively developed and maintained with a first 7.8.0 stable release in Sep. 2019. In total, it comes with almost 1400 fixes and improvements with respect to the previous stable releases 7.6.x. This page summarizes the manifold new features which have been added to GRASS 7.8.

Are there any GIS options for Apple Macintosh?

There is a common misconception that there are no options for Apple Macintosh or iOS users who want to use GIS. There are several choices available for Apple Macintosh and iOS users. ArcGIS Explorer is a freely available lightweight GIS data viewer from ESRI that lets you perform a variety of basic GIS functions.

Which is the best open source GIS program?

DIVA-GIS is a free computer program for mapping and geographic data analysis (a geographic information system (GIS). Quantum GIS (QGIS) is a user friendly Open Source Geographic Information System (GIS) licensed under the GNU General Public License.

Which is the open source version of QGIS?

QGIS is an official project of the Open Source Geospatial Foundation (OSGeo). It runs on Linux, Unix, Mac OSX, and Windows and supports numerous vector, raster, and database formats and functionalities.

Note: A new GRASS GIS stable version has been released: GRASS GIS 7.8, available here. wxGUI is a native Graphical User Interface (GUI) for GRASS GIS. Its main features include displaying geographical data in 2D and 3D, calling GRASS GIS modules, and interacting with data.

How do I import raster data into grass?

Import selected raster data into GRASS using r.in.gdal and load them into current layer tree. Link selected external raster data as GRASS raster maps (using r.external) and load them into current layer tree. Define external format for newly created raster maps (see r.external.out for details)

Where to find GRASS GIS in layer manager?

On Linux and Windows platforms, the layer manager also has a menu bar with a set of pull-down menus for all GRASS GIS functions (analysis, file I/O, GIS configuration and management); on a Mac, the GRASS functions menu is at the top of the screen. The top left button of the toolbar opens a new Map Display Window.

Note: A new GRASS GIS stable version has been released: GRASS GIS 7.8, available here. r.reclass – Reclassify raster map based on category values. Creates a new raster map whose category values are based upon a reclassification of the categories in an existing raster map.

Where are the grass data stored in QGIS?

GRASS data are stored in a directory referred to as GISDBASE. This directory, often called grassdata, must be created before you start working with the GRASS plugin in QGIS. Within this directory, the GRASS GIS data are organized by projects stored in subdirectories called LOCATIONs.

Can a reclassed map be stored in grass?

Also note that although the user can generate a r.reclass map which is based on another r.reclass map, the new r.reclass map will be stored in GRASS as a reclass of the original raster map on which the first reclassed map was based.

Note: A new GRASS GIS stable version has been released: GRASS GIS 7.8, available here. i.pansharpen uses a high resolution panchromatic band from a multispectral image to sharpen 3 lower resolution bands.

How to use pansharpened Landsat as a basemap?

A few months ago I found an excellent pansharpened Landsat dataset to use as a basemap in ArcGIS by going to the Add Data icon, selecting ArcGIS Online and then selecting add pansharpened landsat. Landsat 8 composite image using different resolutions?

How to use Pansharpening in Google Earth Engine?

Referring to Pansharpening Sentinel-2 imagery in Google Earth Engine and the solution provided In the answer the code mentioned refers to the use of a single image, instead, I am trying to use it on

What do you need to know about Pansharpening?

Pansharpening is a process of merging high-resolution panchromatic and lower resolution multispectral imagery to create a single high-resolution color image. Learn more…

How is image processing done in GRASS GIS?

For a general overview, see “Introduction: image processing in GRASS GIS” at imageryintro . Digital numbers and physical values (reflection/radiance-at-sensor):

How are satellite imagery and orthophotos handled in grass?

Satellite imagery and orthophotos (aerial photographs) are handled in GRASS as raster maps and specialized tasks are performed using the imagery (i.*) modules. All general operations are handled by the raster modules. The wxGUI offers a convenient tool for single map and bulk import:

Can a grass raster map be exported in GeoTIFF?

If a GRASS raster map is exported for a particular application, the application’s native format would be preferable. GeoTIFF is supported by a wide range of applications (see also NOTES on GeoTIFF below). To specify multiple creation options use a comma separated list ( createopt=”TFW=YES,COMPRESS=DEFLATE” ).

Why is the color table grayscale in r.out.gdal?

This is not a bug of r.out.gdal , but often caused by the default color table assigned by that software. The default color table may be grayscale covering the whole range of possible values which is very large for e.g. Int32 or Float32.

Note: A new GRASS GIS stable version has been released: GRASS GIS 7.8, available here. v.to.rast – Converts (rasterize) a vector map into a raster map.

How to convert v.to.rast to grass?

When used with direct OGR access this is the layer name. type = string [,string,…] v.to.rast transforms GRASS vector map layers into GRASS raster map layer format. Optionally, attributes can be converted to raster category labels. In order to avoid unexpected results, the type of vector features should always be specified.

When was the first release of grass 6.4?

Since its initial release in September 2010 more than 2400 source code modifications have been made to the 6.4 release branch. Between 6.4.3 and the current 6.4.4 more than 300 updates have been applied.

Which is the latest version of GRASS GIS?