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Geometric Mean: is there a built-in?

...ositive values. gm_mean = function(x, na.rm=TRUE){ exp(sum(log(x[x > 0]), na.rm=na.rm) / length(x)) } Thanks to @ben-bolker for noting the na.rm pass-through and @Gregor for making sure it works correctly. I think some of the comments are related to a false-equivalency of NA values in the d...
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How to create a drop shadow only on one side of an element?

...ent is required. #box { background-color: #3D6AA2; width: 160px; height: 90px; position: absolute; top: calc(10% - 10px); left: calc(50% - 80px); } .box-shadow:after { content:""; position:absolute; width:100%; bottom:1px; z-index:-1; ...
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Android: How to change CheckBox size?

... answered Jan 28 '10 at 7:36 moraesmoraes 11.8k77 gold badges4141 silver badges5858 bronze badges ...
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How to remove the querystring and get only the url?

... +100 You can use strtok to get string before first occurence of ? $url = strtok($_SERVER["REQUEST_URI"], '?'); strtok() represents the ...
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How dangerous is it to compare floating point values?

...nt the actual result. An easy example where you can see this is adding x = 0x1fffffe and y = 1 as floats. Here, x has 24 bits of precision in the mantissa (ok) and y has just 1 bit, but when you add them, their bits are not in overlapping places, and the result would need 25 bits of precision. Inste...
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How do I add 1 day to an NSDate?

... 720 Swift 5.0 : var dayComponent = DateComponents() dayComponent.day = 1 // For removing...
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Shading a kernel density plot between two points.

...x(which(dens$x < q95)) with(dens, polygon(x=c(x[c(x1,x1:x2,x2)]), y= c(0, y[x1:x2], 0), col="gray")) Output (added by JDL) share | improve this answer | follow ...
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Selecting data frame rows based on partial string match in a column

... 150 I notice that you mention a function %like% in your current approach. I don't know if that's a r...
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How to write a cron that will run a script every day at midnight?

...how to use it on Ubuntu. Your crontab line will look something like this: 00 00 * * * ruby path/to/your/script.rb (00 00 indicates midnight--0 minutes and 0 hours--and the *s mean every day of every month.) Syntax: mm hh dd mt wd command mm minute 0-59 hh hour 0-23 dd day of month 1-...
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Maintaining the final state at end of a CSS3 animation

I'm running an animation on some elements that are set to opacity: 0; in the CSS. The animation class is applied onClick, and, using keyframes, it changes the opacity from 0 to 1 (among other things). ...