Useful free GIS shapefile map tools | StatSilk

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Explore interactive maps: Ebola deaths timeline | World’s top universities | Most liveable cities | Football rankings | more The following tools can significantly reduce the size of your maps. Please note that significantly simplifying maps your maps can lead to blocky or jagged map borders, as well as cause map areas smaller than the ‘tolerance area’ to simply disappear. Therefore please use this with caution and verify that all map areas are still present following simplification. MapShaper is the recommended tool for this, as it has options on startup to prevent map areas from disappearing following simplification. All exported map and graph images are licensed under a Creative Commons Attribution 3.0 Unported License. See also: attribution. – Online application for generating map colors, optimized for distinguishing color categories, and finding colors which are color blind friendly (8% of men / 0.4% of women) and print and photocopy friendly. – Calc can be used to edit the DBF (database) files associated with shapefile maps. It can be useful for example to remove unused columns and significantly reduce the size of the DBF for web publishing. Calc is part of the free Open Office suite. – StatSilk’s own StatPlanet Plus can be used to create web-based or offline interactive maps, using embedded maps or external The following tools can significantly reduce the size of your maps. Please note that significantly simplifying maps your maps can lead to blocky or jagged map borders, as well as cause map areas smaller than the ‘tolerance area’ to simply disappear. Therefore please use this with caution and verify that all map areas are still present following simplification. MapShaper is the recommended tool for this, as it has options on startup to prevent map areas from disappearing following simplification. is a free web-based utility for simplifying a map and significantly reducing the size. Maps of over 50 mb can sometimes be reduced to less than 1 mb. It is therefore very useful for creating lighter weight maps suitable for online publishing (for example, for ). MapShaper also has options for repairing intersections and preventing shape removal. The steps to simplify your map are as follows: Make sure to select ‘repair intersections’ and ‘prevent shape removal’ to avoid small map regions from disappearing and map area boundaries from intersecting themselves. Click on ‘shapefile’ in the export menu, in the top-right corner of the screen. Within a few moments, the new map will be downloaded. , replace the file ‘map.shp’ in the map folder with the new .shp file just downloaded. The map.dbf file does not need to be modified. can also be used to simplify shapefiles. First import your shapefile map via the menu, ‘Layer’ -&gt, ‘Add Vector Layer’. Once it is imported, go to ‘Vector’ -&gt, ‘Geometry Tools’ -&gt, ‘Simplify geometries’. Use the default ‘Simplify tolerance’ value or insert your own (increase the value to increase simplification). To save the result, check ‘Save to new file’, and browse to a location for the new map file. For more details, see also the following Source.

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