I broke out SAGA again this week to do some soil interpolations. I don't usually use inverse distance weighting (IDW) for much because you can't generate error maps or use covariates with this method. For this project I needed to make some maps in IDW to compare back to other methods. I'm using IDW for… Continue reading Inverse Distance Weighting in SAGA
Author: matcham2.0
Hills vs Bluffs
Gahhhh I'm terribly behind on posting here! I have some good material in the works regarding interpolation in SAGA, soil map downloads, and box plots, but today you'll have to settle for a quick geology fact. On Friday we planted a variety trial location in Galesville, WI. This site sits in a valley surround by… Continue reading Hills vs Bluffs
Living on an Isthmus
I recently moved to Madison, Wisconsin and have since become very excited about isthmuses. Madison is located on an isthmus between Lake Monona and Lake Mendota. The west side of the isthmus is the University of Wisconsin Madison campus. Between campus and the center of the isthmus is the state capital. Other cool cities on… Continue reading Living on an Isthmus
Vocab Word: Multicollinearity
I'm going to continue highlighting words I get asked about regularly. Today's feature: multicollinearity! This is a word you've probably heard about in stats class, but might not know specifically what it is or why it matters. We worry about multicollinearity when we are using multiple independent variables to model one output. One of your… Continue reading Vocab Word: Multicollinearity
Data Downloads: 2017 Ag Census
The 2017 Census of Agriculture results will be released on Thursday, April 11th. If you're looking for updated production information, this is a great resource. Here are some quick facts about the census and some ways to see the results! What is the Census of Agriculture? It's a record of all the humans, animals, and… Continue reading Data Downloads: 2017 Ag Census
Trial Design App: PLOTS
Field season is basically here, and I am ready to get out of the office. Most of us have our plot maps made already, but we all have a few trials that slipped through the cracks. One great tool, especially for on-farm research, is the Ohio State PLOTS app. PLOTS can help you design a… Continue reading Trial Design App: PLOTS
Data Downloads: DEMs
There are four types of spatial data I download frequently for research purposes-- aerial images, digital elevation models (DEMs), soil maps, and county or other political maps. You can learn more about the first type, aerial images, in one of my early blog posts about Google Satellite, OpenLayers for QGIS, and OGRIP. Today I'm going… Continue reading Data Downloads: DEMs
