Now that the shapefile knows what its projection system is, it can convert to WGS84 to be compatible with Google Earth using MapWindow GIS’s “Reproject a Shapefile” tool.
We have one more step to go, however, as Google Earth has its own projection System. In this case, the web site points out that “All data sets are projected into the Texas State Plane Central NAD 83 survey feet coordinate system unless otherwise stated.” So we enter this in the “Choose Projection” form in MapWindow GIS. This shapefile has no projection information, but MapWindow GIS allows us to assign a projection to the shapefile. I’ll start at a web page for accessing GIS data for Austin, Texas (and the regional area) and downloading a shapefile representing School Districts. To get an idea of the status of this open source KML initiative (I will certainly have to come up with a better name than that), I thought I would walk through a typical scenario of taking a shapefile off of the internet and placing it in Google Earth. MapWindow GIS also lets users make shapefiles from scratch pretty quickly, though its editing tools are not as robust as OpenJump or QGIS (which I have often used for editing shapefiles to be converted in MapWindow GIS). The main reason for choosing this open source GIS was it’s development environment (.NET), the ease with which it was possible to create plugins, and its re-projecting capability (very important if you want to get all of your shapefiles into Google Earths projection system). To develop my Shapefile to KML tool, I decided to use MapWindow GIS. In fact, I have found that if you are willing to jump back and forth between each of them, you can do an enormous amount of serious GIS work. As you might expect, each of these has their strong and weak points. My personal favorites are OpenJUMP, Quantum GIS (QGIS), and MapWindow GIS.
#Editing kml in quantum gis professional
There are several good open source GIS packages available today, and while none of them come close to matching a professional GIS, quite a few of them are powerful enough to be useful. I also really like the idea of having my own, royalty free, toolset for creating Google Earth based applications.
#Editing kml in quantum gis license
There is a massive amount of GIS data available to the public in the form of shapefiles, and a cheap, license free, toolset to get the data into Google Earth might be useful to a lot of people. 1) It sounded like a lot of fun, 2) I have been increasingly interested in open source GIS, and 3) the emergence of Google Earth (as well as Google Maps, Yahoo Maps, and Microsoft Live Local) has led to an enormous interest in geospatial visualization outside of the traditional GIS community. There were three main reasons that I decided to work on this project. I gained a lot of experience with KML while prototyping an ESRI ArcMap based toolset that used ArcObjects, and thought that an open source equivalent would be worth pursuing. whenever I get the chance) is a Shapefile to KML writer for viewing GIS data in Google Earth that uses open source GIS components. The example shows the case in which in the local project_data directory there are two directories ( geopackage and spatialite) in addition to the two system directories ( svg and media_user).One of the things that I have been working on lately (or. NB: The names of these directories are defined by the basic settings set during the installation of the suite. Svg: a directory to store extra SVG icons used your QGIS projectsĪll the directories can be organized in subdirectories with no nesting limits. Media_user: a directory exposed on the web, to store your multimedia files Two specific directories can also be created within the root directory of the File Manager: It will therefore be necessary, in the case of using geographic files on the file system, to synchronize the contents of the local project_data directory (and any sub-directories) before proceeding with the publication of QGIS projects. The root directory of the File Manager corresponds to the local project_data directory Using this tool it is possible to manage the physical geographic data on the server in a simple and intuitive way. To synchronize your data access to the Administration panel of G3W-ADMIN and click on the Configurations icon located in the upper right corner.Ĭhoose the File Manager item in the linked menu. The geographic data stored in the local project_data folder must be loaded, reflecting any subdirectory structure. The data stored in the local project_data directory must be synchronized on the server where the G3W-SUITE application is installed. Geographic data synchronization on the server ¶
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