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  2. Wikipedia:Graphics Lab/Resources/QGIS/Create a topographic ...

    en.wikipedia.org/wiki/Wikipedia:Graphics_Lab/...

    Color each vector polygon level (0m, 200m, ...) as need. Introduction. QGis can convert raster polygons into vector polygons (raster > polygonizer). It does contours too, which have no fill, and so you must use vector > geometry > lines to polygons in order to fill them up. QGis cycles Inkscape cycles

  3. Wikipedia : Graphics Lab/Resources/QGIS/Get ready

    en.wikipedia.org/.../Resources/QGIS/Get_ready

    There are 2 kinds of data: raster GIS files — surfaces with limited precision represented by dots (pixels) — most of time topographic data; and vector GIS files — dots, lines and polygons. Below are both the biggest families, and some links to download the files needed for this tutorial.

  4. GIS file format - Wikipedia

    en.wikipedia.org/wiki/GIS_file_format

    A simple vector map, using each of the vector elements: points for wells, lines for rivers, and a polygon for the lake A vector dataset (sometimes called a feature dataset) stores information about discrete objects, using an encoding of the vector logical data model to represent the location or geometry of each object, and an encoding of its ...

  5. QGIS - Wikipedia

    en.wikipedia.org/wiki/QGIS

    QGIS supports raster, vector, mesh, and point cloud layers. [4] Vector data is stored as either point, line, or polygon features. Multiple formats of raster images are supported, and the software can georeference images. QGIS supports shapefiles, personal geodatabases, dxf, MapInfo, PostGIS, and other industry-standard formats. [5]

  6. Wikipedia:Graphics Lab/Resources/QGIS/Importing OSM roads

    en.wikipedia.org/.../QGIS/Importing_OSM_roads

    QGIS displays raster or vector data in the projection you have him before indicated. To choose a projection to your project, QGIS 1.8 > Preferences > Project Properties > select the desired projection in the list. When you import your raster and vector layers in the current project, they should be displayed directly in the right projection (but ...

  7. Data model (GIS) - Wikipedia

    en.wikipedia.org/wiki/Data_model_(GIS)

    While the raster model is closely tied to the field conceptual model, objects can also be represented in raster, essentially by transforming an object X into a discrete field of presence/absence of X. Alternatively, a layer of objects (usually polygons) could be transformed into a discrete field of object identifiers.

  8. Man abandons haircut to help officer under attack - AOL

    www.aol.com/man-abandons-haircut-help-officer...

    A man having his hair cut leapt out of the barber's chair and ran to help a police officer who was being wrestled to the ground in a headlock.

  9. Georeferencing - Wikipedia

    en.wikipedia.org/wiki/Georeferencing

    Georeferencing or georegistration is a type of coordinate transformation that binds a digital raster image or vector database that represents a geographic space (usually a scanned map or aerial photograph) to a spatial reference system, thus locating the digital data in the real world.