How I prepared for the AWS Cloud Practitioner exam

I'm currently working on a cloud product which is utilizing the AWS cloud; so it was a great time to study for and take the AWS Cloud Practitioner Exam. Here are some of the details on how I prepared for the exam; but none of the details from the actual exam, just logistics. AWS Exam …

Projection Cards

This was a fun little voluntary project organized by Danield Huffman from somethingaboutmaps.com to produce a series of project cards.I thought it would be a nice opportunity to share some of my working notes to see if my process makes sense and just to put it out there for others to use. Inspiration First of …

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 …

Automated Testing for Geospatial Applications

We really don’t want to break things that work, it's super frustrating. We test to make sure that any changes we make do not break another piece of the code in our applications. Of course manual or exploratory tests are important but the dream is to get this stuff fully automated. We make some changes …

Basics of Drone flight

How to Capture Drone Imagery How to capture some cool drone imagery with a few pro tips. Step one: Get a drone My personal favorite at the moment is the Maverick Air. It's tiny and fits easily into a day pack. Step two: Flight planning Before you set out to collect imagery it is critical …

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 …

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