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Plotting two variables as lines using ggplot2 on the same graph
...equires a simple ggplot() call to produce the plot you wanted with all the extras (one reason why higher-level plotting packages like lattice and ggplot2 are so useful):
require(ggplot2)
p <- ggplot(stacked, aes(Dates, value, colour = variable))
p + geom_line()
I'll leave it to you to tidy up ...
Using jQuery to center a DIV on the screen
...do is speed this up a bit by caching the $(window) object so that I reduce extra DOM traversals, and I use a cluster CSS.
jQuery.fn.center = function ($) {
var w = $(window);
this.css({
'position':'absolute',
'top':Math.abs(((w.height() - this.outerHeight()) / 2) + w.scrollTop()),
'...
What is the difference between Views and Materialized Views in Oracle?
...triggers or by using the ON COMMIT REFRESH option. This does require a few extra permissions, but it's nothing complex. ON COMMIT REFRESH has been in place since at least Oracle 10.
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.classpath and .project - check into version control or not?
...the user should check out the project and should be able to run it without extra knowledge. For this files the rules are the same as for other files in the project: handle them with care. You should not place absolute pathes in the source code, neigther you should in the configuration files.
If the...
Drop shadow for PNG image in CSS
...rnet Explorer 9-.
One step further is to inline the SVG, eliminating the extra request:
.shadowed {
-webkit-filter: drop-shadow(12px 12px 25px rgba(0,0,0,0.5));
filter: url("data:image/svg+xml;utf8,<svg height='0' xmlns='http://www.w3.org/2000/svg'><filter id='drop-shadow'><...
Check if table exists in SQL Server
...onGuralnek so, instead of following a simple and portable standard, add an extra piece of cryptic info?
– defines
May 15 '12 at 14:42
25
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How to Implement Custom Table View Section Headers and Footers with Storyboard
...ust use a prototype cell as your section header and / or footer.
add an extra cell and put your desired elements in it.
set the identifier to something specific (in my case SectionHeader)
implement the tableView:viewForHeaderInSection: method or the tableView:viewForFooterInSection: method
use [...
Manifest merger failed : uses-sdk:minSdkVersion 14
...<version>21.0.0-rc1</version> in your file <android-sdk>/extras/android/m2repository/com/android/support-v4/maven-metadata.xml
Repeat the same for support-v7
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How do I add comments to package.json for npm install?
...r in git commit diffs or in editor while working with package.json.
And no extra tools involved, just plain and valid JSON.
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How to remove local (untracked) files from the current Git working tree
...At the end, it makes for a nice alias:
git iclean
That being said, the extra hand holding of interactive commands can be tiring for experienced users. These days I just use the already mentioned git clean -fd
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