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Cluster analysis in R: determine the optimal number of clusters
...Look for a bend or elbow in the sum of squared error (SSE) scree plot. See http://www.statmethods.net/advstats/cluster.html & http://www.mattpeeples.net/kmeans.html for more. The location of the elbow in the resulting plot suggests a suitable number of clusters for the kmeans:
mydata <- d
ws...
Setting multiple attributes for an element at once with JavaScript
...key, attrs[key]);
}
}
Call it like this:
setAttributes(elem, {"src": "http://example.com/something.jpeg", "height": "100%", ...});
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Programmer-friendly search engine? [closed]
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Try http://www.symbolhound.com .
This seems to solve your problem. SymbolHound is a search engine that doesn't ignore symbols or special characters in web queries like google does. It's not a source code search, either. Hope th...
Best programming based games [closed]
...real robots.
As mentioned earlier by Proud, there is a wiki page for it:
http://en.wikipedia.org/wiki/RoboWar
Although there has not been a lot of activity surrounding the game over the last few years, there was a tournament held recently, and there is a yahoo email group.
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Why is AJAX returning HTTP status code 0?
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I'm confused. Is there no way to get the HTTP error code returned? This is a lot of different cases here (415, 404, etc?)
– Edwin Evans
Jul 26 '18 at 20:41
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How to scale Docker containers in production
...r on Tsuru as it supports docker-cluster and segregated scheduler deploy
http://blog.tsuru.io/2014/04/04/running-tsuru-in-production-scaling-and-segregating-docker-containers/
Update 7
Docker-based environments orchestration
maestro-ng
Update 8
decking.io
Update 9
Google kubernetes
Update...
Best Practices for securing a REST API / web service [closed]
...nst both accidental and malicious request replaying.
The nice thing about HTTP Basic is that virtually all HTTP libraries support it. You will, of course, need to require SSL in this case because sending plaintext passwords over the net is almost universally a bad thing. Basic is preferable to Dige...
In what situations would AJAX long/short polling be preferred over HTML5 WebSockets?
...d, due to timeouts or data eof. On server side it is still treated like an HTTP request, same as AJAX, except the answer on request will happen now or some time in the future, defined by the application logic.
support chart (full) | wikipedia
WebSockets - client ↔ server. Create a TCP connection ...
Extension · App Inventor 2 中文网
...权时默认申请的 scope。默认值是 basic,netdisk。
UserAgent
HTTP 请求默认使用的 User-Agent。
Events
AccessTokenChanged(token)
当 AccessToken 属性通过解析授权回调被更新时触发。
ApiError(operation,httpStatus,message,responseBody)...
How to add images in select list?
... iconselect.js; Icon/image select (combobox, dropdown)
Demo and download; http://bug7a.github.io/iconselect.js/
HTML usage;
<div id="my-icon-select"></div>
Javascript usage;
var iconSelect;
window.onload = function(){
iconSelect = new IconSelect("my-icon-select"...