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Dear R-Experts, seek your help. There are two parts I want to deal with. 1) I want to create a time interval of say, 30 minutes starting from "00:00:00" hrs Thus at the end, I want to create sequence: 00:00:00 00:30:00 01:00:00 01:30:00 .. .. How to do so ? Later, I want to change the time-increment value in a variable and changing the value of this variable, I would like to create

Dear R users, I have a table with say three columns and 70 rows. The second column has dates in format dd.mm.yy (i.e. 01.10.07 indicating record for October 1, 2007). I read the text file, containing the records. Now, I want to find out the weekday for each date. However, I cannot do so. 1) If I type result[1,"Date"] to see the Date in the first row, I get following output: 70

Dear R-Experts, Seek your help. Please let me know how arrays of different sizes can be collected in one array. suppose I want to collect following arrays in one array. How can I do so? array(1): #row=3, #col=4(these columns store data of different types) array(2): #row=6, #col=4 array(3): #row=3, #col=4 .... want to store in Main_array How to define dimensions of Main_array? Thank you.

Dear R- Experts, Seek your help. I want to creata data as follows. Ref_array with 4 columns. 1st column should store data of precision: 8.4 (i.e. 8 digits before decimal point and 4 digits after decimal points) 2nd column: should store data of type date "yyyy-mm-dd hh:mm:ss" 3rd column: only integer value. No decimal points 4th column: percentage values Please help. Thank you in

Dear R-Experts, Seek your help. In a List object e.g. Time_duration[[]], I am storing differece between two time-stamps (start-time and end-time) for a certain event. Time difference does not remain constant for, say, 10 observations. Each time, the time difference is given in different time units: seconds / hours / minutes. Can you please tell me - how I can store the values of time

Dear R-Experts, Seek your help. I am calling say 20 functions one by one in one script. To reach the end, it takes approximately one hour. While R is performing calculations, I would like to print console output statements to track the progress.(e.g. "Result of function-1 is done") Note: I have already tried "print" however, it did not work. Thank you in advance. Regards,

Hello All, For certain calculations, I have to handle a dataframe with say 10 million rows and multiple columns of different datatypes. When I try to perform calculations on certain elements in each row, the program just goes in "busy" mode for really long time. To avoid this "busy" mode, I split the dataframe into subsets of 10000 rows. Then the calculation was done very