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Export a graph to .eps file with R

How do I export a graph to an .eps format file? I typically export my graphs to a .pdf file (using the 'pdf' function), and it works quite well. However, now I have to export to .eps files. ...
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Wait for all promises to resolve

So I have a situation where I have multiple promise chains of an unknown length. I want some action to run when all the CHAINS have been processed. Is that even possible? Here is an example: ...
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How can I create a correlation matrix in R?

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How does “make” app know default target to build if no target is specified?

Most linux apps are compiled with: 3 Answers 3 ...
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What does .SD stand for in data.table in R

...ly know what I am doing with it. What does it stand for? Why is there a preceding period (full stop). What is happening when I use it? ...
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How can I determine the type of an HTML element in JavaScript?

I need a way to determine the type of an HTML element in JavaScript. It has the ID, but the element itself could be a <div> , a <form> field, a <fieldset> , etc. How can I achieve this? ...
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How do you suppress output in IPython Notebook?

How can output to stdout be suppressed? 4 Answers 4 ...
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What is the meaning of the prefix N in T-SQL statements and when should I use it?

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Is there any way to not return something using CoffeeScript?

It seems like CoffeeScript automatically returns the last item in a scope. Can I avoid this functionality? 5 Answers ...
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Count the occurrences of DISTINCT values

I am trying to find a MySQL query that will find DISTINCT values in a particular field, count the number of occurrences of that value and then order the results by the count. ...