Blog Archives

How do I open R help about a symbol or punctuation mark like ( parenthesis or [ bracket?

April 8, 2014
By

A question I’ve googled before without success. Hopefully this answer will show up for someone who needs it. I’ll also go over the better-known uses of ? just in case. To get help in R about a function like subset you type ?subset . That’s like man subset from the command line. If you only know roughly what you’re looking for use double...

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How do I open R help about a symbol, special character, or punctuation mark like ( parenthesis or [ bracket?

April 8, 2014
By

A question I’ve googled before without success. Hopefully this answer will show up for someone who needs it. I’ll also go over the better-known uses of ? just in case. To get help in R about a function like subset you type ?subset . That’s like man subset from the command line. If you only know roughly what you’re looking for use double...

Read more »

a public list of R freelancers

December 4, 2013
By

tl,dr: If you want to be contacted for freelance R work, edit this list https://github.com/isomorphisms/hire-an-r-programmer/blob/gh-pages/README.md.   Background/Problem: I was looking for a list of R-programming freelancers and realised there is no such list. Other than famous people and people I already talk to, I don’t know even a small fraction of the R community—let alone people who do R among other...

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a public list of R freelancers

December 4, 2013
By

tl,dr: If you want to be contacted for freelance R work, edit this list https://github.com/isomorphisms/hire-an-r-programmer/blob/master/README.md.   Background/Problem: I was looking for a list of R-programming freelancers and realised there is no such list. Other than famous people and people I already talk to, I don’t know even a small fraction of the R community—let alone people who do R...

Read more »

Two interesting ideas here: “trading time” price impact of a…

October 29, 2013
By
Two interesting ideas here:
“trading time”
price impact of a…

Two interesting ideas here: "trading time" price impact of a trade proportional to exp( √size ) Code follows: require(quantmod) getSymbols("MER") #Merrill Lynch #Gatheral's model HiLo Op(symbol) #munging mer names(mer) = "UpDay"names(mer) = "HiLo" mer ...

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Two interesting ideas here: “trading time” price impact of a…

October 29, 2013
By
Two interesting ideas here:
“trading time”
price impact of a…

Two interesting ideas here: "trading time" price impact of a trade proportional to exp( √size ) Code follows: require(quantmod) getSymbols("MER") #Merrill Lynch #Gatheral's model HiLo Op(symbol) #munging mer names(mer) = "UpDay"names(mer) = "HiLo" mer ...

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playing along with Elias Wegert in R: X <-…

October 15, 2013
By
playing along with Elias Wegert in R:
X <-…

sine mis-calculated the angles on sine mid-res, small cex, pch=46, sine low-res, small cex, pch=46 z^17th power sine in HCL rather than HSV cosh z+zz+zzz+zzzz+zzzzz+zzzzzz+zzzzzzz+zzzzzzzz+zzzzzzzzz+zzzzzzzzzzplaying along with Elias Wegert in R: X * complex(imaginary=.05) + t(X)/20 #twist & shout X hcl(h=55*Arg(sin(X)), c=Mod(sin(X))*40 ) , ...

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playing along with Elias Wegert in R: X <-…

October 15, 2013
By
playing along with Elias Wegert in R:
X <-…

sine mis-calculated the angles on sine mid-res, small cex, pch=46, sine low-res, small cex, pch=46 z^17th power sine in HCL rather than HSV cosh z+zz+zzz+zzzz+zzzzz+zzzzzz+zzzzzzz+zzzzzzzz+zzzzzzzzz+zzzzzzzzzzplaying along with Elias Wegert in R: X * complex(imaginary=.05) + t(X)/20 #twist & shout X hcl(h=55*Arg(sin(X)), c=Mod(sin(X))*40 ) , ...

Read more »

“I like this concept of “low volatility, interrupted by occasional periods of high volatility”. I…”

July 29, 2013
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“I like this concept of “low volatility, interrupted by occasional periods of high volatility”. I…”

“I like this concept of “low volatility, interrupted by occasional periods of high volatility”. I think I will call it “volatility”.” - Daniel Davies via nonergodic   (PS: If you didn’t see Read more »

“I like this concept of “low volatility, interrupted by occasional periods of high volatility”. I…”

July 29, 2013
By
“I like this concept of “low volatility, interrupted by occasional periods of high volatility”. I…”

“I like this concept of “low volatility, interrupted by occasional periods of high volatility”. I think I will call it “volatility”.” - Daniel Davies via nonergodic   (PS: If you didn’t see Read more »

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