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Add legend to ggplot2 line plot

...atos <- structure(list(fecha = structure(c(1317452400, 1317538800, 1317625200, 1317711600, 1317798000, 1317884400, 1317970800, 1318057200, 1318143600, 1318230000, 1318316400, 1318402800, 1318489200, 1318575600, 1318662000, 1318748400, 1318834800, 1318921200, 1319007600, 1319094000), class = c(...
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Using sed, how do you print the first 'N' characters of a line?

... but not on Mac. – Paul Tomblin Mar 25 '16 at 0:17 Exactly, it is not available on OSX. – fedorq...
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Java system properties and environment variables

...what so you mean? – Bohemian♦ Jul 25 '13 at 10:06 8 System.grtProperties() lists all properties...
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PHP Difference between array() and []

...35 e2-e4 25.1k55 gold badges6565 silver badges9393 bronze badges answered Jul 21 '13 at 12:55 The AlphaThe Alp...
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When is the thread pool used?

... answered Mar 25 '14 at 19:44 JasonJason 12.8k22 gold badges2424 silver badges3939 bronze badges ...
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Get css top value as number not as string?

... M4NM4N 88.4k4242 gold badges208208 silver badges253253 bronze badges 57 ...
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What does the constant 0.0039215689 represent?

... 0.0039215689 is approximately equal to 1/255. Seeing that this is OpenGL, performance is probably important. So it's probably safe to guess that this was done for performance reasons. Multiplying by the reciprocal is faster than repeatedly dividing by 255. Side...
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How to check if a model has a certain column/attribute?

... | edited Sep 25 '15 at 4:34 mahemoff 35.8k2828 gold badges127127 silver badges189189 bronze badges ...
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Grant execute permission for a user on all stored procedures in database?

... answered Mar 25 '11 at 4:06 Sanjeevakumar HiremathSanjeevakumar Hiremath 9,83133 gold badges3737 silver badges4646 bronze badges ...
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How to delete selected text in the vi editor

... answered Jun 25 '10 at 1:30 Pascal ThiventPascal Thivent 524k126126 gold badges10121012 silver badges10991099 bronze badges ...