See also:. 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. A simple but useful free application for quickly opening and browsing shapefile maps.
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We would like to announce the development of LSI Viewer (Libre Spatial Information Viewer)- an Online tool to visualize one's own GIS data.
Web and desktop based software for creating interactive maps, using embedded maps or external. See also the. A mobile-compatible version of StatPlanet with dashboard capabilities, and support for GeoJSON maps. An open source Geographic Information System for editing, merging and simplifying shapefile maps. 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 ). For step-by-step gudiance, see our. can also be used to simplify shapefiles. First import your shapefile map via the menu, 'Layer' - 'Add Vector Layer'.
Once it is imported, go to 'Vector' - 'Geometry Tools' - '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.