Last week I mentioned terrain derivatives and promised some how-to posts. I'm going to start with an brief intro to SAGA GIS, which is my preferred software for generating terrain derivatives. SAGA was written in the early 2000s and has been regularly updated-- you can learn more from its makers here. You can download SAGA… Continue reading Intro to SAGA GIS
There are a lot of good ways to compile different images into a single figure. For me, the print composer in QGIS works to get my map, scales, and legends into a single TIFF to embed in a word document or send as an attachment 90 percent of the time. The other 10 percent of… Continue reading Making Figures in PowerPoint
Lots of people have been asking me about terrain derivatives lately, and I've been putting off blogging about them for a while because I just didn't know where to start. Instead of one master post with all the things I decided to split it into some more manageable chunks-- for both your sake and mine.… Continue reading What are terrain derivatives?
The primary reason I started Spatially Challenged is to have a lasting record of questions I get asked frequently. Since the American Society of Agronomy meeting in November, I've had a number of questions about terrain derivatives like curvature, terrain wetness index, etc. I promise I've heard those questions and the answers are coming! I… Continue reading 2019 Preview and Captioning Photos in Word
We're getting into winter holidays, so I will likely post infrequently between now and the start of spring semester. Before that break though, here are three brief notes in celebration of 6 months of blogging! Firstly, a quick summary of the blog so far (updated as of 18 Dec 2018). Spatially Challenged has been viewed… Continue reading 6 Months of Spatially Challenged!
Columbus is the 14th largest city in the US, and by far the most populous place I've ever lived (source). It's the 2nd largest in the Midwest, just after Chicago. But at roughly 879,000 residents, Columbus is truly tiny compared to many global cities. I know it's a fairly small city, but I can't really… Continue reading Visualizing Global Population
Last week I posted about my usual QGIS to R workflow, and shared a little flowchart: This week I wanted to highlight the software I used to make it-- Draw.io, which is an open source version of Microsoft Visio. Visio is great, but it's expensive, so Draw.io usually makes more sense for me. Draw.io lets… Continue reading Draw.io