1997 search results for "Ggplot2"

Veterinary Epidemiologic Research: Linear Regression

February 14, 2013
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Veterinary Epidemiologic Research: Linear Regression

This post will describe linear regression as from the book Veterinary Epidemiologic Research, describing the examples provided with R. Regression analysis is used for modeling the relationship between a single variable Y (the outcome, or dependent variable) measured on a continuous or near-continuous scale and one or more predictor (independent or explanatory variable), X. If

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Stadium / home team effects in making field goals

February 13, 2013
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Stadium / home team effects in making field goals

We take on a reader question of whether the stadium / home team matters for making a field goal. We pulled up the data on every field goal since 2002 (over 10,000) of them and plotted the probability of scoring as a function of the stadium in which the field goal was kicked. The post Stadium / home...

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#14 A New GGPLOT Template

February 13, 2013
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#14 A New GGPLOT Template

  So the opts() has now been given the boot, and all the cool kids are using theme() to customise their ggplots. If you’re still on an old version of R then theme() will still work, but if you update (which you should) then it’ll stop working and you’ll have to edit all your code

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Sharing my work for “Advanced Methods III”

February 13, 2013
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Sharing my work for “Advanced Methods III”

This semester I’m taking the live version of the Data Analysis class by Jeff Leek. His more popular version of the course is available through Coursera.  One of the things that Jeff promotes is reproducibility and sharing code. I share that tendency and thus created a Git repository for my homework and code for the class: lcollado753. I’m...

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R: Barplot with absolute and relative values

February 12, 2013
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R: Barplot with absolute and relative values

In this short tutorial I will show how you can add the relative amount over the barplots, such that you have both, the absolute and relative Information in the plot. First, I create some artificial SNPs and TPMT-genotype.

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A Review of the R Graphics Cookbook

February 11, 2013
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A Review of the R Graphics Cookbook

A common criticism of R, especially from data scientists who are new to R but proficient in multiple programming languages, is that R is “quirky” and annoying because there is almost always more than one way to do simple things. I usually counter that they are trying to say that R is “flexible” and “rich”, but by the time...

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F1Stats – Correlations Between Qualifying, Grid and Race Classification

February 9, 2013
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F1Stats – Correlations Between Qualifying, Grid and Race Classification

Following directly on from F1Stats – Visually Comparing Qualifying and Grid Positions with Race Classification, and continuing in my attempt to replicate some of the methodology and results used in A Tale of Two Motorsports: A Graphical-Statistical Analysis of How Practice, Qualifying, and Past SuccessRelate to Finish Position in NASCAR and Formula One Racing, here’s

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Happy Birthday Florence Henderson

February 9, 2013
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Happy Birthday Florence Henderson

As a celebration of Florence Henderson’s 79th birthday (on February 14), I have created this scatterplot to use in my regression course. The plot depicts the relationship between time spent on mathematics homework outside of school (expressed as z-scores) and … Continue reading →

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Finding a jump in data

February 9, 2013
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Finding a jump in data

The other day I saw a plot with some data with a clear jump in it. So I wondered if it were possible to determine the position of that jump. Data with a jump is easy enough made:library(ggplot2)n <- 100mydata <- data.frame(x=runif(n))mydata$...

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Learning R Using a Chemical Reaction Engineering Book: Part 4

February 8, 2013
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Learning R Using a Chemical Reaction Engineering Book: Part 4

The links to previous parts are listed here. (Part 1, Part 2, Part 3). In this part, I tried to recreate the examples in sections A.3.1 of the computational appendix in the reaction engineering book (by Rawlings and Ekerdt). Solving a … Continue reading →

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