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How to rename a single column in a data.frame?
...mp)[2] <- "newname2"
attempts to set the second column's name. Your object only has one column, so the command throws an error. This should be sufficient:
colnames(trSamp) <- "newname2"
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Changing user agent on urllib2.urlopen
How can I download a webpage with a user agent other than the default one on urllib2.urlopen?
9 Answers
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How to retrieve absolute path given relative
Is there a command to retrieve the absolute path given the relative path?
21 Answers
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Can I use CoffeeScript instead of JS for node.js?
...ions if I want to code node.js and use CoffeeScript?
Can I do anything I'd be able to do in JS?
8 Answers
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How to use XPath in Python?
What are the libraries that support XPath? Is there a full implementation? How is the library used? Where is its website?
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How to calculate time difference in java?
I want to subtract two timeperiods say 16:00:00 from 19:00:00. Is there any java function for this? The results can be in milliseconds, seconds, or minutes.
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Untrack files from git temporarily
... a local git on my machine. When I initialized git, I added pre-compiled libs and binaries. However, now during my development I don't want to check in those files intermittently. I dont want to remove these files from repo. Is there any way to not keep a track of these files till I complete my deve...
LAST_INSERT_ID() MySQL
I have a MySQL question that I think must be quite easy. I need to return the LAST INSERTED ID from table1 when I run the following MySql query:
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Executing multiple commands from a Windows cmd script
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When you call another .bat file, I think you need "call" in front of the call:
call otherCommand.bat
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How to define an enum with string value?
...d common separators which used in CSV or similar files. Then I am going to bind it to a ComboBox as a data source so whenever I add or remove from the Enum definition, I would not need to change anything in the combo box.
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