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Order discrete x scale by frequency/value
...
ggplot(mtcars, aes(factor(cyl))) + geom_bar()
# Manual levels
cyl_table <- table(mtcars$cyl)
cyl_levels <- names(cyl_table)[order(cyl_table)]
mtcars$cyl2 <- factor(mtcars$cyl, levels = cyl_levels)
# Just to be clear, the above line is no different than:
# mtcars$cyl2 <- factor(m...
How can the Euclidean distance be calculated with NumPy?
... description here: stats.stackexchange.com/questions/322620/… . I have 2 tables of 'operations'; each has a 'code' label, but the two sets of labels are totally different. my goal is to find the best or closest code from the second table corresponding to a fixed code in the first (I know what the ...
Pandas percentage of total with groupby
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What's going on here? As I understand it, x is a table of some kind, so 100 * x doesn't intuitively make sense (especially when some of the cells contain strings like AZ, ...).
– dhardy
Feb 6 '15 at 9:42
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Add a custom attribute to a Laravel / Eloquent model on load?
...s any accessors which do not directly relate to a column in the underlying table.
As Taylor Otwell mentioned here, "This is intentional and for performance reasons." However there is an easy way to achieve this:
class EventSession extends Eloquent {
protected $table = 'sessions';
protecte...
What methods of ‘clearfix’ can I use?
...one css statement. Additionally, using display: block (instead of display: table) allows margins to collapse properly when elements with clearfix are siblings.
.container::after {
content: "";
display: block;
clear: both;
}
This is the most modern version of the clearfix.
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Older...
Are JavaScript strings immutable? Do I need a “string builder” in JavaScript?
Does javascript use immutable or mutable strings? Do I need a "string builder"?
10 Answers
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A simple explanation of Naive Bayes Classification
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I realize that this is an old question, with an established answer. The reason I'm posting is that is the accepted answer has many elements of k-NN (k-nearest neighbors), a different algorithm.
Both k-NN and NaiveBayes are classification algorithms. Conceptually, k-NN uses...
How to set the UITableView Section title programmatically (iPhone/iPad)?
I've created a UITableView in Interface Builder using storyboards . The UITableView is setup with static cells and a number of different sections.
...
Fastest way to determine if an integer's square root is an integer
...ly check if the residue is a square, I look up the answer in a precomputed table.
if( bad255[y] )
return false;
// However, I just use a table of size 512
Finally, try to compute the square root using a method similar to Hensel's lemma. (I don't think it's applicable directly, but it works wi...
Tips for debugging .htaccess rewrite rules
... name="go" value="OK"/><hr/><p>&nbsp;</p>
<table><thead><tr><td><b>Test Vector</b></td><td>&nbsp; &nbsp; <b>Result</b></td>
<?php
for ( $i=0; $i<$maxM; $i++ ) echo "<td>&nbsp; ...