tag:blogger.com,1999:blog-57985668328310321732011-07-28T17:34:28.615+02:00early medieval mappingElaborating ideas about geo-referencing historical events in time and space.Johanhttp://www.blogger.com/profile/01885200766340155057noreply@blogger.comBlogger51100tag:blogger.com,1999:blog-5798566832831032173.post-79830035607167694672009-12-13T22:44:00.003+01:002009-12-13T23:59:12.034+01:00Building an integrated historical geographical information system, part 1Historical source-documents are increasingly becoming available on the Internet. It's a huge resource waiting to be elaborated. The sources often come in one of two formats. They are published as graphical scans of printed book pages with or without large chunks of unedited OCR-text, or they can be fully formatted as an electronic text, that can be copied, edited or searched. Often little or no Johanhttp://www.blogger.com/profile/01885200766340155057noreply@blogger.com1tag:blogger.com,1999:blog-5798566832831032173.post-43153055642920502352009-11-16T17:00:00.009+01:002009-11-16T19:49:03.234+01:00Historical GIS and Semantic webThe historical GIS application Regnum Francorum Online references historical events in time, space and by agency and link the events to source documents and literature available online. In doing so, the application becomes a GIS-interface to a growing number of both primary and secondary sources online. This also includes the huge collection of articles in the Wikipedia. To me, it has become Johanhttp://www.blogger.com/profile/01885200766340155057noreply@blogger.com0tag:blogger.com,1999:blog-5798566832831032173.post-68660400406904477392009-10-31T16:48:00.034+01:002009-10-31T21:06:28.523+01:00Working with spatial data in binary representation in MySQL and PHPIn an earlier post I showed how to store and retrieve spatial POINT geometries in MySQL and PHP. A POINT is a geometry that represents a single location in coordinate space. In this post we will be dealing with more complex spatial data such as LINESTRING and POLYGON, in real world representing for example rivers, roads, or territories in coordinate space. A number of Shapefiles (SHP) describingJohanhttp://www.blogger.com/profile/01885200766340155057noreply@blogger.com0tag:blogger.com,1999:blog-5798566832831032173.post-22231815589180287242009-10-28T21:02:00.048+01:002010-02-21T23:37:07.867+01:00Using MySQL spatial extensions in historical GISThis post describes some aspects of using MySQL spatial extensions in the historical GIS application Regnum Francorum Online. Because I was already using MySQL to store evidence of historical events, the choise to try out the spatial extensions of MySQL that were introduced in version 4 was very close at hand. The geographical information system Regnum Francorum Online (RFO) is a MySQL database Johanhttp://www.blogger.com/profile/01885200766340155057noreply@blogger.com2tag:blogger.com,1999:blog-5798566832831032173.post-54621730702341508732009-10-28T18:12:00.032+01:002009-11-02T15:50:59.883+01:00Regnum Francorum Online historical GISRegnum Francorum Online — interactive maps and sources of early medieval Europe 614-840 is a historical geographic information system (GIS), aiming at referencing historical events of Merovingian and Carolingian Europe (Frankish kingdom) in time and space. The information system covers the time period approx. 614 to 840. Historical events are recognized through source-documents of different kind,Johanhttp://www.blogger.com/profile/01885200766340155057noreply@blogger.com0