Blog Archives

Modeling an Infant’s Feeding Schedule with Periodic Smoothing Splines

June 15, 2013
By
Modeling an Infant’s Feeding Schedule with Periodic Smoothing Splines

Feeding Schedule While on paternity leave I had an opportunity to test out periodic smoothing splines (within the framework of generalized additive models) on an interesting time-series-- an infant's feeding schedule. read more

Read more »

AQP News and Updates

March 12, 2013
By

The AQP family of R packages has seen a lot of development over the last 3 months. Some of the highlights include: HTML manual pages with syntax-highlighting and figures, c/o knitr new vignettes: "dealing with bad data", gridded SSURGO (gSSURGO) demo,...

Read more »

Visualizing CA Snow Survey Data in R

January 14, 2013
By
Visualizing CA Snow Survey Data in R

The CDEC website provides access to a wide range in hydrologic data (stream flow, snow survey, etc.) collected in California. The following code and functions (attached at the bottom of the page) illustrate how to query CDEC, and graphically compare th...

Read more »

New AQP Tutorials

January 4, 2013
By
New AQP Tutorials

Soil Series Extent Several new AQP-related tutorials have been posted to the R-Forge project page. SoilProfileCollection class/method documentation soil series extent mapping examples read more

Read more »

Basic Simulation of Soil Profile Data in R via AQP

December 19, 2012
By
Basic Simulation of Soil Profile Data in R via AQP

Something fun to play with before the new year: experimental code in aqp for simulating soil profile data from a single "template" profile. The basic idea: simulate horizon thickness data using a family of Gaussian functions with mean defined by horizo...

Read more »

Summarizing Circular Data in R: Aspect Angle

October 10, 2012
By
Summarizing Circular Data in R: Aspect Angle

The orientation of terrain surface (aspect) can have dramatic effects on landscape-scale variation in soil temperature and moisture. Summarizing aspect angle is complicated by the fact that sampled values are measured on a circular scale. The circular ...

Read more »

Compiling Source Packages on R 2.15.x / Mac OS 10.5.x

August 31, 2012
By

For some reason R is not happy with its 64-bit cousin when installing source packages: * installing *source* package ‘XMLSchema’ ... ** R ** inst ** preparing package for lazy loading ** help *** installing help indices ** building package indices ** installing vignettes ** testing if installed package can be loaded *** arch - i386 *** arch - x86_64 /Library/Frameworks/R.framework/Resources/bin/R: line 259: /Library/Frameworks/R.framework/Resources/bin/exec/x86_64/R: Bad CPU type in executable /Library/Frameworks/R.framework/Resources/bin/R: line 259:...

Read more »

Compiling rgdal on Mac OS 10.5

August 31, 2012
By

Why do I always forget how to do this? R CMD INSTALL rgdal --configure-args="--with-gdal-config=/Library/Frameworks/GDAL.framework/Versions/Current/unix/bin/gdal-config --with-proj-include=/Library/Frameworks/PROJ.framework/Versions/4/Headers/ --with-proj-lib=/Library/Frameworks/PROJ.framework/Versions/Current/unix/lib/" You will need to adjust the paths based on your version of the GDAL and Proj4 frameworks. read more

Read more »

Basic documentation for soilDB package (R) now available

August 29, 2012
By

A proper introduction to the soilDB package is now available here. Installation and basic usage are covered. More detailed, task-specific documentation on aqp and soilDB will be available soon. read more

Read more »

Extracting an image chunk from a collection of Large MrSid Images

June 4, 2012
By

Recently needed to extract a small "chunk" from a collection of adjacent MrSid mosaics, each about 4Gb in size. Once again, GDAL came to the rescue, and saved much time and agony wile working with very large, compressed, and proprietary-format files. T...

Read more »

Sponsors

Mango solutions



plotly webpage

dominolab webpage



Zero Inflated Models and Generalized Linear Mixed Models with R

Quantide: statistical consulting and training

datasociety

http://www.eoda.de





ODSC

ODSC

CRC R books series





Six Sigma Online Training









Contact us if you wish to help support R-bloggers, and place your banner here.

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)