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Add a common Legend for combined ggplots
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Update 2015-Feb
See Steven's answer below
df1 <- read.table(text="group x y
group1 -0.212201 0.358867
group2 -0.279756 -0.126194
group3 0.186860 -0.203273
group4 0.417117 -0.002592
group1 -0.212201 0.358867
group2 -0.279756 -0.126194
group3 0.186860 -0.203273
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tomcat - CATALINA_BASE and CATALINA_HOME variables
...installation directory, including its contents, and ensure that Tomcat has read permissions to it. Edit the configuration files according to your needs.
Create a logs directory if conf/logging.properties points to ${catalina.base}/logs, and ensure that Tomcat has read/write permissions to it.
Creat...
How to allow http content within an iframe on a https site
...thenonsslsite.com";
Alternatively, you could add an RSS feed or write some reader/parser to read the http site and display it within your https site.
You could/should also recommend to the http site owner that they create an ssl connection. If for no other reason than it increases seo.
Unless you ...
How to reload apache configuration for a site without restarting apache
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@cs01 Where do you read that the httpd daemon will be restarted? Everything I read on the link provided in the answer says things like apachectl graceful: Gracefully restarts the Apache daemon by sending it a SIGUSR1. If the daemon is not runni...
Converting PKCS#12 certificate into PEM using OpenSSL
...on
with open("push.p12", "rb") as file:
p12 = crypto.load_pkcs12(file.read(), "my_passphrase")
# PEM formatted private key
print crypto.dump_privatekey(crypto.FILETYPE_PEM, p12.get_privatekey())
# PEM formatted certificate
print crypto.dump_certificate(crypto.FILETYPE_PEM, p12.get_certificate...
How to fix Hibernate LazyInitializationException: failed to lazily initialize a collection of roles,
In the custom AuthenticationProvider from my spring project, I am trying read the list of authorities of the logged user, but I am facing the following error:
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What is the difference between Serializable and Externalizable in Java?
...perform the marshalling and unmarshalling functions (you need to implement readExternal and writeExternal methods on your class). This gives you the means to get around the reflection performance bottleneck.
In recent versions of Java (1.3 onwards, certainly) the performance of reflection is vastl...
When to use Common Table Expression (CTE)
I have begun reading about Common Table Expression and cannot think of a use case where I would need to use them. They would seem to be redundant as the same can be done with derived tables. Is there something I am missing or not understanding well? Can someone give me a simple example of limitati...
How can I tell Rails to use RSpec instead of test-unit when creating a new Rails app?
...ec/spec_helper.rb
create spec/rails_helper.rb
I strongly recommended to read through all spec_helper and rails_helper comments to get a good understanding of what each option does.
Once everything is set you can run all your tests with:
bundle exec rspec
You can read more about the recommend...
What is the most efficient way to create HTML elements using jQuery?
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personally i'd suggest (for readability):
$('<div>');
some numbers on the suggestions so far (safari 3.2.1 / mac os x):
var it = 50000;
var start = new Date().getTime();
for (i = 0; i < it; ++i) {
// test creation of an element
// se...