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How to convert a data frame column to numeric type?

...g it. Thank you. – ripvlan Jul 27 '16 at 17:50 So it is absolutely impossible to turn err <- c(1, "b", 3, 4, "e") ...
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Int or Number DataType for DataAnnotation validation attribute

...swered Jun 18 '13 at 8:38 Dilip0165Dilip0165 3,98744 gold badges2424 silver badges3232 bronze badges ...
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Count number of records returned by group by

... results. – cartbeforehorse Feb 18 '16 at 8:59 5 ...
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Width equal to content [duplicate]

... | edited Jul 27 '16 at 14:28 mwfearnley 2,07411 gold badge2424 silver badges2626 bronze badges ...
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Mark parameters as NOT nullable in C#/.NET?

... | edited May 5 '16 at 15:21 ruffin 12.5k77 gold badges6767 silver badges114114 bronze badges a...
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String difference in Bash

... <(echo b); – Aquarius Power Apr 16 '15 at 1:30 ...
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Problem in running .net framework 4.0 website on iis 7.0

... answered Nov 1 '12 at 16:11 toddmotoddmo 15.4k88 gold badges7676 silver badges8888 bronze badges ...
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Mysql order by specific ID values

... answered Nov 30 '11 at 8:16 ManjulaManjula 4,36433 gold badges2424 silver badges3636 bronze badges ...
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What's the difference between Thread start() and Runnable run()

... answered Feb 8 '16 at 7:43 Jaimin PatelJaimin Patel 3,95333 gold badges2828 silver badges3232 bronze badges ...
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Unexpected character encountered while parsing value

... MrBoJangles 11.3k1616 gold badges6060 silver badges7777 bronze badges answered Apr 24 '14 at 3:23 Alexei LevenkovAlexe...