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- Raster_data abstract "A raster data structure is based on a (usually rectangular, square-based) tessellation of the 2D plane into cells. In the example the cells of tessellation A is overlaid on the point pattern B resulting in an array C of quadrant counts representing the number of points in each cell. For purposes of visualization a lookup table has been used to color each of the cells in an image D. Here are the numbers as a simple vector in row/column order:1 3 0 0 1 12 8 0 1 4 3 3 0 2 0 2 1 7 4 1 5 4 2 2 0 3 1 2 2 2 2 3 0 5 1 9 3 3 3 4 5 0 8 0 2 4 3 2 8 4 3 2 2 7 2 3 2 10 1 5 2 1 3 7Finally, here is a run-length encoded representation of the raster, which has 55 positions:values : 1 3 0 1 12 8 0 1 4 3 ...lengths: 1 1 2 1 1 1 1 1 1 2 ...This process clearly results in a loss of information, from the real-valued coordinates of the points, through the integer cell counts, to the ordinal colors, but there are also gains:The data structure is usually more compact,The raster is easy to visualize, andIt can be related to other rasters provided the locations and resolutions are properly conflated.".
- Raster_data thumbnail The_use_of_a_raster_data_structure_to_summarize_a_point_pattern.gif?width=300.
- Raster_data wikiPageID "33511472".
- Raster_data wikiPageRevisionID "597618244".
- Raster_data hasPhotoCollection Raster_data.
- Raster_data subject Category:Geographic_information_systems.
- Raster_data type Artifact100021939.
- Raster_data type DataSystem103164344.
- Raster_data type GeographicInformationSystems.
- Raster_data type Instrumentality103575240.
- Raster_data type Object100002684.
- Raster_data type PhysicalEntity100001930.
- Raster_data type System104377057.
- Raster_data type Whole100003553.
- Raster_data comment "A raster data structure is based on a (usually rectangular, square-based) tessellation of the 2D plane into cells. In the example the cells of tessellation A is overlaid on the point pattern B resulting in an array C of quadrant counts representing the number of points in each cell. For purposes of visualization a lookup table has been used to color each of the cells in an image D.".
- Raster_data label "Raster data".
- Raster_data sameAs m.0h943tn.
- Raster_data sameAs Q7295261.
- Raster_data sameAs Q7295261.
- Raster_data sameAs Raster_data.
- Raster_data wasDerivedFrom Raster_data?oldid=597618244.
- Raster_data depiction The_use_of_a_raster_data_structure_to_summarize_a_point_pattern.gif.
- Raster_data isPrimaryTopicOf Raster_data.
