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How to convert the ^M linebreak to 'normal' linebreak in a file opened in vim?
vim shows on every line ending ^M
35 Answers
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What does “not run” mean in R help pages?
Sometimes on an R help page the phrase "not run" appears in comments. Check out this from the help page for "with()":
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How to scale down a range of numbers with a known min and max value
So I am trying to figure out how to take a range of numbers and scale the values down to fit a range. The reason for wanting to do this is that I am trying to draw ellipses in a java swing jpanel. I want the height and width of each ellipse to be in a range of say 1-30. I have methods that find t...
Simple Digit Recognition OCR in OpenCV-Python
I am trying to implement a "Digit Recognition OCR" in OpenCV-Python (cv2). It is just for learning purposes. I would like to learn both KNearest and SVM features in OpenCV.
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JsonMappingException: out of START_ARRAY token
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How to add Action Bar from support library into PreferenceActivity?
Action Bar compatibility has been added into support library, revision 18. It now has ActionBarActivity class for creating activities with Action Bar on older versions of Android.
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Custom Adapter for List View
I want to create a custom adapter for my list view. Is there any article that can walk me through how to create one and also explain how it works?
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Cluster analysis in R: determine the optimal number of clusters
Being a newbie in R, I'm not very sure how to choose the best number of clusters to do a k-means analysis. After plotting a subset of below data, how many clusters will be appropriate? How can I perform cluster dendro analysis?
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Cleaning up old remote git branches
I work from two different computers (A and B) and store a common git remote in the dropbox directory.
9 Answers
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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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