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plot a circle with pyplot

surprisingly I didn't find a straight-forward description on how to draw a circle with matplotlib.pyplot (please no pylab) taking as input center (x,y) and radius r. I tried some variants of this: ...
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How to merge two arrays in JavaScript and de-duplicate items

I have two JavaScript arrays: 76 Answers 76 ...
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How to use arguments from previous command?

I know that Esc + . gives you the last argument of the last command. 11 Answers 11...
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Check existence of directory and create if doesn't exist

I often find myself writing R scripts that generate a lot of output. I find it cleaner to put this output into it's own directory(s). What I've written below will check for the existence of a directory and move into it, or create the directory and then move into it. Is there a better way to approach...
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WAMP error: Forbidden You don't have permission to access /phpmyadmin/ on this server

I am new to WAMP and I have just installed it today. 33 Answers 33 ...
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How to dynamically change a web page's title?

I have a webpage that implements a set of tabs each showing different content. The tab clicks do not refresh the page but hide/unhide contents at the client side. ...
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Add an already existing directory to a directory in Solution Explorer

I want to add an already existing directory to a directory in Solution Explorer, but whenever I right-click on the directory and select Add => Existing Item , I can only add individual files, but not directories. ...
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How do I access the $scope variable in browser's console using AngularJS?

I would like to access my $scope variable in Chrome's JavaScript console. How do I do that? 19 Answers ...
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django test app error - Got an error creating the test database: permission denied to create databas

When I try to test any app with command (I noticed it when I tried to deploy myproject using fabric, which uses this command): ...
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GitHub relative link in Markdown file

Is there a way to create a URL anchor, <a> , link from within a Markdown file, to another file within the same repository and branch (aka a link relative to the current branch)? ...