format

问题 Hi I need to remain only with the day of each date: df<-data.frame(x=c("2014-07-24 00:00:00", "2014-07-24 00:00:00", "2014-07-11", "2014-07-11" ,"2014-07-16" ,"2014-07-14")) as.Date(df$x,format="%Y-%m-%d" ) I tried this: df$dia<-as.Date(df$x, format="%d") But I get a full date and different from the orginal. I don't want to install another package to do this. How can I solve it? Thanks 回答1: Are you looking for format ? format(as.Date(df$x,format="%Y-%m-%d"), format = "%d") # [1] "24" "24" "11

问题 I have difficulty aligning Japanese characters in python. Code: print "{c1}{name:>14s}{c2}{nick_name:>14s}{planes:>16s}".format( name=name, nick_name=nick_name, planes=planes, c1=u.color['yellow'], c2=u.color['default'] ) Result: If the string contains english and numbers only, the .format() works fine,as shown on the right. The aligning goes wrong when encountering Japanese characters, as shown on the left. Interestingly, when aligning with {name:>14s} : If "name" contains 4 JP characters,

问题 I have difficulty aligning Japanese characters in python. Code: print "{c1}{name:>14s}{c2}{nick_name:>14s}{planes:>16s}".format( name=name, nick_name=nick_name, planes=planes, c1=u.color['yellow'], c2=u.color['default'] ) Result: If the string contains english and numbers only, the .format() works fine,as shown on the right. The aligning goes wrong when encountering Japanese characters, as shown on the left. Interestingly, when aligning with {name:>14s} : If "name" contains 4 JP characters,

问题 I found lots of stuff to format floats to common known numbers, but how can I format a float to a max of 2 decimals, but only if the decimals are needed? Examples: 1.11 # not 1.111 1.12 # it was 1.116 (round up) 1.1 # not 1.10 1 # not 1.00 if I do $('{0:N2}' -f $flt) I get 1.00 # :( Thanks in advance! 回答1: Use [math]::round , ie: [math]::round(1.111,2) will return 1.11 and [math]::round(1.00,2) yields 1 回答2: You can use the # character in a custom numeric format string to include non-zero

问题 I found lots of stuff to format floats to common known numbers, but how can I format a float to a max of 2 decimals, but only if the decimals are needed? Examples: 1.11 # not 1.111 1.12 # it was 1.116 (round up) 1.1 # not 1.10 1 # not 1.00 if I do $('{0:N2}' -f $flt) I get 1.00 # :( Thanks in advance! 回答1: Use [math]::round , ie: [math]::round(1.111,2) will return 1.11 and [math]::round(1.00,2) yields 1 回答2: You can use the # character in a custom numeric format string to include non-zero

问题 I'm planning to develop a system integrating fingerprint scanner. By reading some sdk's, I always encounter template format such as: ANSI INCITS 378-2004 and ISO/IEC 19794-2:2005 I was having hard time understanding it. I know template is the term used to store fingerprint, but how do these format differ from each other and does template came from minutiae? 回答1: The biometric fingerprint template formats you mentioned are standardized and widely accepted end let's say like 'encoding' type of

问题 I'm planning to develop a system integrating fingerprint scanner. By reading some sdk's, I always encounter template format such as: ANSI INCITS 378-2004 and ISO/IEC 19794-2:2005 I was having hard time understanding it. I know template is the term used to store fingerprint, but how do these format differ from each other and does template came from minutiae? 回答1: The biometric fingerprint template formats you mentioned are standardized and widely accepted end let's say like 'encoding' type of

问题 I'm planning to develop a system integrating fingerprint scanner. By reading some sdk's, I always encounter template format such as: ANSI INCITS 378-2004 and ISO/IEC 19794-2:2005 I was having hard time understanding it. I know template is the term used to store fingerprint, but how do these format differ from each other and does template came from minutiae? 回答1: The biometric fingerprint template formats you mentioned are standardized and widely accepted end let's say like 'encoding' type of

问题 I'm planning to develop a system integrating fingerprint scanner. By reading some sdk's, I always encounter template format such as: ANSI INCITS 378-2004 and ISO/IEC 19794-2:2005 I was having hard time understanding it. I know template is the term used to store fingerprint, but how do these format differ from each other and does template came from minutiae? 回答1: The biometric fingerprint template formats you mentioned are standardized and widely accepted end let's say like 'encoding' type of

问题 I'm working on an APA citation maker in Python using tkinter. I use the Text widget to display the citation once it's generated, but whenever I copy the text (using the ctrl+c shortcut, at the moment) it loses its formatting. Is there some way to copy formatted text (italicized, for instance) from the Text widget rather than unformatted text? 回答1: To copy formatted text to the clipboard, you need an interface between python and the system's clipboard which supports text formatting. I have