Tags » PostGIS

Training courses calendar: QGIS (Desktop, Server and Web) and PostGIS

We just published our Training Courses calendar for the period September 2014 – January 2015.

This includes training courses about QGIS (Desktop, Server and Web) and PostgreSQL/PostGIS… 190 more words

Qgis

Functions for Transferring Vector Data Between PostGIS and R

There are numerous excellent packages to process and analyze spatial data in R. However, when a project involves multiple and/or large spatial data sets, it often makes sense to make use of a spatial database for data management. 1,247 more words

R

LiDAR and pointcloud extension pt 6

There’s all sorts of reasons why what I’ve been doing so far is wrong (see the previous 5 posts).  More on that later. But in case you needed 3D visualization of the chipping I’ve been working through, look no further:

FOSS

LiDAR and pointcloud extension pt 5

Now for the crazy stuff:

The objective is to allow us to do vertical and horizontal summaries of our data. To do this, we’ll take chipped LiDAR input and further chip it vertically by classifying it. 452 more words

FOSS

LiDAR and pointcloud extension pt 4

Now, we navigate into unknown (and perhaps silly) territory. Now we do point level calculations of heights, and drop the new calculated points back into the point cloud as though it were a Z value. 230 more words

FOSS

LiDAR and pointcloud extension pt 3

Digging a little deeper. Ran the chipper on a smaller number of points and then am doing a little hacking to get height per chip (if you start to get lost, … 235 more words

FOSS

LiDAR and pointcloud extension pt 2

As much for my edification as anyones:
Want to get at just a few points within the pointcloud extension? A with query will get you there: 70 more words

FOSS