Top 5 Recent Articles
ARTICLES CATEGORIES
- Algorithms (20)
- All (400)
- Biography (1)
- Blog (45)
- Business Requirements (1)
- Commentary (1)
- Customers (2)
- Data Models (1)
- Education (2)
- GeoRaptor (13)
- GPS (1)
- Image Processing (2)
- Import Export (8)
- Licensing (2)
- LiDAR (1)
- Linear Referencing (4)
- Manifold GIS (3)
- Mapping (1)
- MySQL Spatial (7)
- Networking and Routing (including Optimization) (4)
- Open Source (18)
- Oracle Spatial and Locator (193)
- Partitioning (1)
- PostGIS (34)
- Projections (1)
- Published Articles (1)
- qGIS (1)
- Recommendations (1)
- Services (1)
- Software Change Log (1)
- Source Code (35)
- Space Curves (9)
- Spatial Database Functions (108)
- Spatial DB comparison (1)
- Spatial XML Processing (11)
- SQL Server Spatial (92)
- Standards (3)
- Stored Procedure (15)
- Tessellation or Gridding (10)
- Tools (2)
- Topological Relationships (1)
- Training (2)
- Triangulation (2)
Converting Oracle Optimized Rectangles to PostGIS
Someone on the PostGIS discussion list asked about a problem converting an Oracle database to PostGIS and he had run into some difficulties with Oracle’s
15 April, 2020
No Comments
Building polygons from overlapping linestrings requiring intersection
I received an email a few weeks ago asking: I was wondering if you could post an article explaining how to create a polygon from
15 April, 2020
No Comments
Loading Point Data from a CSV File in PostGIS
I recently wrote an article on the use of External File with Oracle tables to load point data into Oracle. I thought I would have
15 April, 2020
No Comments
DMS2DD for PostGIS
Yesterday, I posted a short article on Converting Google Earth Formatted Longitude/Latitude points to decimal degrees. The Google Earth longitude/latitude values are expressed as a
15 April, 2020
No Comments
Implementing Oracle’s GetVertices function in PostGIS – ST_DumpPoints
The GetVertices function in the MDSYS.SDO_UTIL package in Oracle Spatial is an exceedingly useful function. From the Oracle documentation of this function: This function returns
13 April, 2020
No Comments
Filtering Rings in Polygon (PostGIS)
This is my first blog article on PostGIS. On the PostGIS discussion list, a question was asked: > I have a polygon table that has
2 April, 2020
No Comments
STAsEWKT
STAsEWKT — Implements an method to create Extended Well Known Text (EWKT) strings from the input @p_geometry. Introduction/Description The Open Geospatial Consortium’s, Simple Features Specifications
3 January, 2020
No Comments
STGeomFromEWKT
STGeomFromEWKT — Function that implements an import method for Extended Well Known Text including EWKT with SRID, Z and M ordinates.. Introduction/Description The Open Geospatial
1 January, 2020
No Comments
Using PostgreSQL’s XML processing to load spatial data
Using PostgreSQL’s XML processing to load spatial data Spatial data comes in many forms, but the most common is, probably, XML. If you have a
2 September, 2019
No Comments
STLocateBetweenElevations
STLocateBetweenElevations — Computes and returns elements that intersect the specified Z range. Function Specification Description Is implementation of PostGIS: Processes the supplied (3D, 3DM) (multi)linestring
19 July, 2019
No Comments