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Add regression line equation and R^2 on graph
... solution
# GET EQUATION AND R-SQUARED AS STRING
# SOURCE: https://groups.google.com/forum/#!topic/ggplot2/1TgH-kG5XMA
lm_eqn <- function(df){
m <- lm(y ~ x, df);
eq <- substitute(italic(y) == a + b %.% italic(x)*","~~italic(r)^2~"="~r2,
list(a = format(unname(coef(m)[1]...
When should I use mmap for file access?
...on to other nice answers, a quote from Linux system programming written by Google's expert Robert Love:
Advantages of mmap( )
Manipulating files via mmap( ) has a handful of advantages over the
standard read( ) and write( ) system calls. Among them are:
Reading from and writing to...
Casperjs/PhantomJs vs Selenium
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HtmlCleaner 0 82
HtmlUnit 169 102
Google Chrome 38 562
Firefox 46 1159
PhantomJS 40 575
Some comments:
In some cases the "failures" may not be failures at all, it may be
that the extractors are f...
PostgreSQL: Is it better to use multiple databases with one schema each, or one database with multip
...l suffer more this way - and I'm expecting like 500 schemas!)
Otherwise, googling around I've seen that there is no auto-procedure to duplicate a schema (using one as a template), but many suggest this way:
Create a template-schema
When need to duplicate, rename it with new name
Dump it
Rename i...
How to change past commit to include a missed file?
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I realize people can google and come here to find a simpler answer: What if it was just the last commit?
(OP's question is for fixing the 4th commit back in history)
In the case you commit and realize you forgot to add some file immediately, ju...
PHP $_SERVER['HTTP_HOST'] vs. $_SERVER['SERVER_NAME'], am I understanding the man pages correctly?
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Google certainly had (and probably still has in some form) the concept of dupe sites, so that if your site is accessible as http://example.com/, http://www.example.com/ and http://93.184.216.34/ it would combine them into one...
const vs constexpr on variables
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@MayukhSarkar Simply Google C++ why constexpr, e.g. stackoverflow.com/questions/4748083/…
– underscore_d
Aug 13 '16 at 19:27
...
Directive isolate scope with ng-repeat scope in AngularJS
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Discussion on the AngularJS Google Group where @JoshDavidMiller was finally able to clear my confusion!
– Deepak Nulu
Mar 27 '13 at 0:29
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Is AngularJS just for single-page applications (SPAs)?
...RESTful API with Express you can consume from your Angular application(s). Google NodeJS Express RESTful API and Angular's $resource and $http services. After that, just start prototyping and playing with it. I think you might find you're overthinking/worrying too much about the "HOW" once you see h...
How to make an array of arrays in Java
...lections makes APIs a lot more manageable (which is why new libraries like Google Guava hardly use Arrays at all).
So, for your scenario, I'd prefer a List of Lists, and I'd create it using Guava:
List<List<String>> listOfLists = Lists.newArrayList();
listOfLists.add(Lists.newArrayList...