534 search results for "boxplot"

Relearn boxplot and label the outliers

February 5, 2013
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Relearn boxplot and label the outliers

Despite the fact that box plot is used almost every where and taught at undergraduate statistic classes, I recently had to re-learn the box plot in order to know how to label the outliers.This stackoverflow post was where I found how...

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Scatterplot with marginal boxplots

February 3, 2013
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Scatterplot with marginal boxplots

Using R and ggplot2 to draw a scatterplot with the two marginal boxplotsDrawing a scatterplot with the marginal boxplots (or marginal histograms or marginal density plots) has always been a bit tricky (well for me anyway). The approach I take here is, first, to draw the three separate plots using ggplot2:the scatterplot;the horizontal boxplot to appear in the...

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ggplot2 multiple boxplots with metadata

January 26, 2013
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ggplot2 multiple boxplots with metadata

Recently I was asked for an advice of how to plot values with an additional attached condition separating the boxplots. This turns out to be ugly in base graphics, but amazingly simple in ggplot2.

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Looking to boxplots (Shootout 2012)

January 20, 2013
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Looking to boxplots (Shootout 2012)

Boxplots are a nice way to compare the three sample sets of the Shoot-out 2012 data files.There is a category variable (Set) in the data frame with the labels (Cal = Training Set, Test = Test Set and Val = Validation Set). # IMPORTING THE SAMPLE SETS #...

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Two tips: adding title for graph with multiple plots; add significance asterix onto a boxplot

June 28, 2012
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Two tips: adding title for graph with multiple plots; add significance asterix onto a boxplot

I've not added tips for a while. Here is it for today:1. How to add title for graph with multiple plots?par(mfrow=c(1,2),oma = c(0, 0, 2, 0))plot(1:10,  main="Plot 1")plot(1:100,  main="Plot 2")mtext("Title for Two Plots", outer = TRUE, cex =...

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about boxplot

June 15, 2012
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From Wiki:"... the bottom and top of the box are always the 25th and 75th percentile (the lower and upper quartiles, respectively), and the band near the middle of the box is always the 50th percentile (the median). But th...

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whisker of boxplot

June 15, 2012
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whisker of boxplot

From Wiki:"... the bottom and top of the box are always the 25th and 75th percentile (the lower and upper quartiles, respectively), and the band near the middle of the box is always the 50th percentile (the median). But the ends of the whiskers can represent several possible alternative values..."In R's default boxplot{graphics} code,upper whisker =...

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Boxplots and Day of Week Effects

March 4, 2012
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Boxplots and Day of Week Effects

THIS BLOG DOES NOT CONSTITUTE INVESTMENT ADVICE. ACTING ON IT WILL MOST LIKELY BE DETRIMENTAL TO YOUR FINANCIAL HEALTH.After following some R-related quant finance blogs like Timely Portfolio, Systematic Investor or Quantitative tho...

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Pattern Recognition: forward Boxplot Trajectories using R

July 28, 2011
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Pattern  Recognition: forward Boxplot Trajectories using R

Although the following discussion can apply to the Quantitative Candlestick Pattern Recognition series, it is addressing the same issue as any basic conditional type system -- how and when to exit.  The following is one way to visualize and think ...

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Boxplots without boxes

June 14, 2011
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Let’s say you have several categories with multiple data points each that you would like to plot as individual points. Even if you have only a single point, the R graphics package will plot a line (without a box for … Continue reading →

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