1087 search results for "how to import image file to r"

Evaluating Optimization Algorithms in MATLAB, Python, and R

June 18, 2013
By
Evaluating Optimization Algorithms in MATLAB, Python, and R

As those of you who read my last post know, I’m at the NIMBioS-CAMBAM workshop on linking mathematical models to biological data here at UT Knoxville. Day 1 (today) was on parameter estimation and model identifiability. Specifically, we (quickly) covered … Continue reading →

Read more »

Exploratory Data Analysis: Combining Box Plots and Kernel Density Plots into Violin Plots for Ozone Pollution Data

Exploratory Data Analysis: Combining Box Plots and Kernel Density Plots into Violin Plots for Ozone Pollution Data

Introduction Recently, I began a series on exploratory data analysis (EDA), and I have written about descriptive statistics, box plots, and kernel density plots so far.  As previously mentioned in my post on box plots, there is a way to combine box plots and kernel density plots.  This combination results in violin plots, and I

Read more »

Biostatisticians… beware of fuzzy researchers!

June 11, 2013
By
Biostatisticians… beware of fuzzy researchers!

In the last days I was thinking about about how researchers could collaborate efficiently with their experts in statistics. With the increasing complexity in science, interchanging information can be crucial to get the best results. But what happens when a … Sigue leyendo →

Read more »

Mahout for R Users

June 9, 2013
By
Mahout for R Users

I have a few posts coming up on Apache Mahout so I thought it might be useful to share some notes. I came at it as primarily an R coder with some very rusty Java and C++ somewhere in the back of my head so that will be my point of reference. I’ve also included … Continue reading...

Read more »

How old is the oldest person you know?

June 4, 2013
By
How old is the oldest person you know?

Last week, we had a discussion with some colleagues about the fact that – in order to prepare for the SOA exams – we did not have time (so far) to mention results on extreme values in our actuarial program. I did gave an introduction in my nonlife actuarial models class, but it was only an introduction, in three...

Read more »

PluginR v0.80 released & 2 new trainings in July 2013

June 4, 2013
By
PluginR v0.80 released & 2 new trainings in July 2013

I'm pleased to announce that the new version 0.80 of PluginR has just been released (as usual, available as a Tiki Mod) with a few minor bugs fixed, and a couple of new interesting features added: PluginR now uses a caching mechanism extending the ...

Read more »

PluginR v0.80 released & 2 new trainings in July 2013

June 4, 2013
By
PluginR v0.80 released & 2 new trainings in July 2013

I'm pleased to announce that the new version 0.80 of PluginR has just been released (as usual, available as a Tiki Mod) with a few minor bugs fixed, and a couple of new interesting features added: PluginR now uses a caching mechanism extending the ...

Read more »

A Few Tips for Writing an R Book

June 3, 2013
By
A Few Tips for Writing an R Book

I just finished fixing (hopefully all) the problems in the knitr book returned from the copy editor. David Smith has kindly announced this book before I do. I do not have much to say about this book: almost everything in the book can be found in the on...

Read more »

Item Analysis App – Shiny Code

May 28, 2013
By
Item Analysis App – Shiny Code

Here is the code for my first Shiny App! It is the one that I posted previously with a few slight revisions. You can see it at:A Shiny R AppIn order to make any sense of this I suggest you working through the tutorial (http://www.rstudio.com/shiny/) it...

Read more »

When Does the Kinetic Theory of Gases Fail? Examining its Postulates with Assistance from Simple Linear Regression in R

When Does the Kinetic Theory of Gases Fail?  Examining its Postulates with Assistance from Simple Linear Regression in R

Introduction The Ideal Gas Law, , is a very simple yet useful relationship that describes the behaviours of many gases pretty well in many situations.  It is “Ideal” because it makes some assumptions about gas particles that make the math and the physics easy to work with; in fact, the simplicity that arises from these

Read more »