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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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Analyze audio using Fast Fourier Transform
I am trying to create a graphical spectrum analyzer in python.
4 Answers
4
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Convert string with commas to array
How can I convert a string to a JavaScript array?
18 Answers
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How to compare UIColors?
I'd like to check the color set for a background on a UIImageView. I've tried:
20 Answers
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What is __gxx_personality_v0 for?
This is a second-hand question from an OS development site, but it made me curious since I couldn't find a decent explanation anywhere.
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How do I set the version information for an existing .exe, .dll?
As part of our build process I need to set the version information for all of our compiled binaries. Some of the binaries already have version information (added at compile time) and some do not.
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How to merge two sorted arrays into a sorted array? [closed]
This was asked of me in an interview and this is the solution I provided:
31 Answers
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How to use sed to replace only the first occurrence in a file?
I would like to update a large number of C++ source files with an extra include directive before any existing #includes. For this sort of task, I normally use a small bash script with sed to re-write the file.
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Code for a simple JavaScript countdown timer?
I want to use a simple countdown timer starting at 30 seconds from when the function is run and ending at 0. No milliseconds. How can it be coded?
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