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Overlaying histograms with ggplot2 in R

...ncrete example with some output: dat <- data.frame(xx = c(runif(100,20,50),runif(100,40,80),runif(100,0,30)),yy = rep(letters[1:3],each = 100)) ggplot(dat,aes(x=xx)) + geom_histogram(data=subset(dat,yy == 'a'),fill = "red", alpha = 0.2) + geom_histogram(data=subset(dat,yy == 'b'),fill ...
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SQL - Rounding off to 2 decimal places

...lay only up to 2 numbers after the decimal point. So if I have minutes as 650.Then hours should be 10.83 14 Answers ...
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Why do Twitter Bootstrap tables always have 100% width?

... Andres IlichAndres Ilich 72.6k2020 gold badges150150 silver badges136136 bronze badges 1 ...
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jQuery If DIV Doesn't Have Class “x”

...background-color: #0f0; margin: 10px; padding: 10px; width: 100px; height: 50px; clear: both;"> One div with a thumbs class </div> <div id="div2" class="thumbs" style=" background-color: #f00; margin: 10px; padding: 10px; width: 100px; height: 50px; clear: both;"> Another one with a ...
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How to test if list element exists?

...ve sense. – Andy V Oct 21 '14 at 19:50 add a comment  |  ...
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How to remove only underline from a:before?

...6/1607968 – LeJared Feb 20 '14 at 8:50 add a comment  |  ...
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RegEx to parse or validate Base64 data

... | edited Jan 24 '09 at 0:50 answered Jan 24 '09 at 0:40 Gu...
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Position an element relative to its container

...x solid red; height: 100px; } #box { position: absolute; top: 50px; left: 20px; } <div id="container"> <div id="box">absolute</div> </div> In that example, the top left corner of #box would be 100px down and 50px left of the top left corner of #co...
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How to get an element by its href in jquery?

... answered Jun 29 '12 at 16:50 jonathancardosojonathancardoso 8,45266 gold badges4848 silver badges6363 bronze badges ...
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How to check SQL Server version

...RLOG.n files. The entries may resemble the following: 2011-03-27 22:31:33.50 Server Microsoft SQL Server 2008 (SP1) - 10.0.2531.0 (X64) Mar 29 2009 10:11:52 Copyright (c) 1988-2008 Microsoft Corporation Express Edition (64-bit) on Windows NT 6.1 &...