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Cluster analysis in R: determine the optimal number of clusters
...e reproducible data (the data in the Q are... unclear to me):
n = 100
g = 6
set.seed(g)
d <- data.frame(x = unlist(lapply(1:g, function(i) rnorm(n/g, runif(1)*i^2))),
y = unlist(lapply(1:g, function(i) rnorm(n/g, runif(1)*i^2))))
plot(d)
One. Look for a bend or elbow in the...
How to list the size of each file and directory and sort by descending size in Bash?
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DeveloperDeveloper
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Rails 4 LIKE query - ActiveRecord adds quotes
... Ian Vaughan
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answered Sep 30 '13 at 23:57
rb512rb512
6,44433 gold badges...
Real differences between “java -server” and “java -client”?
...anced static analysis and compilation techniques.
Note: The release of jdk6 update 10 (see Update Release Notes:Changes in 1.6.0_10) tried to improve startup time, but for a different reason than the hotspot options, being packaged differently with a much smaller kernel.
G. Demecki points out in t...
What's the difference between ASCII and Unicode?
...the same meaning in ASCII as they have in Unicode. For example, the number 65 means "Latin capital 'A'".
Because Unicode characters don't generally fit into one 8-bit byte, there are numerous ways of storing Unicode characters in byte sequences, such as UTF-32 and UTF-8.
...
Solving a “communications link failure” with JDBC and MySQL [duplicate]
...on and MySQL package used)
Windows: C:**ProgramData**\MySQL\MySQL Server 5.6\my.ini (Notice it's ProgramData, not Program Files)
Here are the solutions:
changing "bind-address" attribute
Uncomment "bind-address" attribute or change it to one of the following IPs:
bind-address="127.0.0.1"
or
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Compiling Java 7 code via Maven
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answered Dec 26 '12 at 16:50
Ryan StewartRyan Stewart
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Sorting a Python list by two fields
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162
like this:
import operator
list1 = sorted(csv1, key=operator.itemgetter(1, 2))
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PHP function to get the subdomain of a URL
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Gras Double
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answered Jun 20 '12 at 20:47
Michael DealMichael D...
How do I output text without a newline in PowerShell?
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164
Write-Host -NoNewline "Enabling feature XYZ......."
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