Working with Shapefiles

Shapefiles are an old file format, originally developed by ESRI, which have become a common way of working with Geospatial data; much to the chagrin of ESRI who have ever since been trying to migrate to a Geodatabase format. A shapefile is driven by is .shp extension but can contain upto 17 different files adding …

How to work with point cloud data

Fundamentally point cloud data is just a lot of points needing to be represented in real or cartesian space. As a colleague recently pointed out to me, computer science is just moving information from one place to another. So the format in which we move data can become very significant and really understanding the schema can be enormously valuable. 

The P4 Multispectral by DJI

Let's look at some imagery collected from DJI's P4M setup released last year. It's being sold as a full agricultural solution. The Phantom 4 Multispectral (P4M) is shipping with one RGB camera and five narrow band sensors, including red edge and near infrared. That's quite the sensor array. Sensors are coming down in price, a …

Building a Raster Mosaic from LINZ Tiles

This is a quick note on cached tile services vs building a raster mosaic. Working with cached image services is a major time saver. It gives you the raster tiles most appropriate to the scale you require, when you require them. While a dynamic service would behave differently, I’m working with a cached tile service …

The Power of Python Toolboxes

A lot of manual work can be avoided by using scripts to automate the processes. However, you inevitably end up with a lot of scripts to automate different pieces of a process. Python toolboxes provide a nice way to bundle these scripts for a complete solution to a process. It contains the whole process in …

%d bloggers like this: