01.04.2010 09:10 · GIS · gdal, python, howto
GDAL is a free library for working with raster and vector data. The command line utilities included in the library are widely used to perform a variety of tasks. Thanks to the developed API, you can work with GDAL functions from many programming languages. This article is dedicated to using the GDAL API in Python and is based on the GDAL Raster API Tutorial.
Read more ››06.06.2009 15:53 · GIS · postgis, wktraster, howto
To some extent, PostGIS can be seen as a free, open-source alternative to ArcSDE, but until recently it lacked support for raster data. Lately, a WKTRaster project has been started to fill this gap and develop an extension to support raster data in PostGIS. Perhaps in the near future, PostGIS will be able to offer its users functionality comparable to ArcSDE.
There was an idea to compare the speed of loading a large raster in ArcSDE and PostGIS. Since there are no ready-to-use binary builds of WTKRaster, it is necessary to build and configure the PostgreSQL + PostGIS + WKTRaster bundle before performing any tests.
We will build the latest stable version of PostgreSQL (8.3.7 at the time of writing), the latest SVN version of PostGIS (1.4.0SVN at the time of writing), and the latest SVN version of WKTRaster (0.1.6SVN at the time of writing). This post is based on the official build instructions and blog posts by Mateusz Loskot.
Read more ››01.10.2008 18:10 · GIS · geoproject, howto
Probably everyone who has started to work with the Report Generator in GIS Geoproject has asked the question: “How can I insert a table in a template?” This question comes up again and again because tables are one of the main elements of various cadastral and geodetic documents (just think of coordinate lists, azimuth tables, and land explications).
At first glance, the lack of standard tools like in MS Word or OOo Writer makes this task impossible. But this is only at first sight. In reality, FastReport, and thus the Report Generator, are at least as good as text editors when it comes to creating tables.
Read more ››03.09.2008 19:54 · GIS · geoproject, howto
One of the most commonly used primitives of the Geoproject 5.x GIS Report Generator is the Cadastral Plan component (PlaneView). Its short description can be found in the “Geoproject 5” GIS User Manual (chapter 11 Designer — Document Template Editor). Since this component is very powerful and most templates will need it, and since there is not much information in the manual, I think it is time to get to know it.
22.08.2008 12:18 · GIS · geoproject, howto
GIS Geoproject is a very popular, convenient, and easy-to-use geographic information system. It is used by more than 350 organisations from different countries, and this number is still growing.
The reason for writing this post was the fact that many people use the system as it is after installation. There is nothing wrong with that — the default configuration of Geoproject is quite universal, and it can be used without changes to perform almost any task. It is possible to work this way, but in my opinion, it is not very comfortable. This post is dedicated to improving the user experience when working with GIS Geoproject.
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