I have a dataset with three columns : Start, Stop and Date
Observations in my Start and Stop are time type.
I have the following two values in my Start and Stop columns:
24:49:00 and 25:16:00
As there are both over 24 hours format.
I would like to convert those two values to the following:
24:49:00 to 00:49:00
and
25:16:00 to 01:16:00
How to do this in both SAS and proc sql ?
Thank you !
Do you need to convert them? Use the TIMEPART() function.
start_day=datepart(start);
start_time=timepart(start);
format start_time tod8.;
Or do you just want to display them that way?
format start stop tod8.;
Start/Stop time-24:00:00 like this:
data _null_;
start='25:16:14't;
point='24:00:00't;
_start=start-point;
put _start;
format _start time8.;
run;
SAS Time and DateTime values use seconds as their fundamental unit.
Thus you can use either modulus arithmetic or TIMEPART function to extract the less than 24 hour part of a > 24 hour time value.
data have;
start = '24:49:00't;
stop = '25:16:00't;
start_remainder = mod(start, '24:00't); * modulus arithmetic;
stop_remainder = mod(stop, '24:00't);
start_timepart = timepart(start); * TIMEPART function;
stop_timepart = timepart(stop);
format start: stop: time10.;
run;
After the computation do not expect start_remainder is less than stop_remainder to be always true.
Related
One of my first posts, so I'll do my best. I've tried searching this, which is how I got this far..but I could use some help converting some time data in the form mm:ss.000 (that's milliseconds at the end) to seconds with a fraction at the end. For example, 2:15.45 should come out to 135.45.
This works:
t <- "02:15.45" (as.numeric(as.POSIXct(strptime(t, format = "%M:%OS"))) - as.numeric(as.POSIXct(strptime("0", format = "%S"))))
But this one, where I'm trying to use a column of my dataframe (originally in character form) does not work:
starttimesFPsnapjumps <- FPsnapjumps$start (as.numeric(as.POSIXct(strptime(starttimesFPsnapjumps, format = "%M:%OS"))) - as.numeric(as.POSIXct(strptime("0", format = "%S"))))
Perhaps it's because my numbers in the column have an extra 0 - they are mm:ss.000. Any thoughts? Thanks in advance.
Hi I have this query in VFP however I don't understand the meaning of it
REPLACE ALL varA WITH YEAR(varB)*100+MONTH(varB)
Can anyone explain why YEAR(varB) is multiply by 100?
Not at a PC to check but it looks like command will store yyyymm as a number. To achieve this, the command will store the year *100 (e.g. 202000) + month (e.g. 10 for October) = 202010. VarA stores a combination of date varB's year() and month () functions, both which return numbers.
I have a little problem and appreciate if anyone could help me.
What I'm trying to do is basically round the time part to the nearest 30 minute.
My question is how can I do rounding data using SAS.
This is my command:
DATA sampledata;
INFORMAT TRD_EVENT_TM time10.;
FORMAT TRD_EVENT_TM TRD_TMR time14.;
INPUT TRD_EVENT_TM;
TRD_TMR = round(TRD_EVENT_TM, 1800);
INFILE;
00:14:12
00:16:12
09:01:23
09:46:32
15:59:45
;
PROC PRINT; RUN;
But I want to round all time, Not five of them.I am using big data.
Thanks for your attention.
assuming you are asking how to do this rounding on other data, not just your datalines in the example above I suggest you separate these two tasks into two different data steps.
First you create your sample data (this you can exchange for your main data later)
DATA sampledata;
infile datalines;
INPUT TRD_EVENT_TM hhmmss8.;
datalines;
00:14:12
00:16:12
09:01:23
09:46:32
15:59:45
;
RUN;
Then you perform the rounding of the time variables.
data test;
set sampledata;
format TRD_EVENT_TM TRD_TMR time.;
TRD_TMR = round(TRD_EVENT_TM, 1800);
run;
Hope this is the answer to the question you had.
data Sampledata_RT;
set Sampledata04;
TRD_EVENT_ROUNDED = intnx('minute30',TRD_EVENT_TM,1,'b');
TRD_EVENT_ROUFOR = put(TRD_EVENT_ROUNDED,hhmm.);
CountedVOLUME = TRD_PR*TRD_TUROVR;
run;
I have to change format to a single cell in a SAS table. That is, the column where the cell is, has format best12., while given that in the cell there is a date, for it I want to use YYMMDD10.
How can I fix?
Thanks in advance.
You can only associate a FORMAT with entire column. If you want cells that have mixed type formatted differently you need a character column that put PUT (function) values into.
To associate a different format with a column use.
proc datasets;
modify data-set-name;
format variables new-format.;
run;
quit;
Here is an example of what you can do if the data allows. Let's say that the earliest date in your data is 1st Jan 2000, this is stored as the number 14,610 in SAS (the number of days since 1st Jan 1960). Therefore if no non-date values exceed this number then you can achieve your goal by formatting all values up to 14,610 as best12. and all values greater than this as yymmdd10.
proc format;
value dtfmt low - 14609 = [best12.]
14610 - high = [yymmdd10.]
;
run;
data want;
input num;
format num dtfmt.;
datalines;
10
20
20514
30
;
run;
You can apply SUBSTR() in IF condition to check for first character and format your variable accordingly..using INPUT() or PUT()
I have following problem:
I need to write a begin and end date into a matrix. Where the matrix contains the yearly quarters (1-4) in the collumns and the rows are the year.
E.g.
Matrix:
Q1 Q2 Q3 Q4
2010
2011
Now the Date 01.01.2010 should be put in the first element and the date 09.20.2011 in the sixed element.
Thanks in advance.
You first have to consider that SAS does not actually have date/time/datetime variables. It just uses numeric variables formatted as date/time/datetime. The actual value being:
days since 1/1/1960 for dates
seconds since 00:00 for times
seconds since 1/1/1960 00:00 for datetimes
SAS does not even distinguish between integer and float numeric types. So a date value can contain a fractional part.
What you do or can do with a SAS numeric variable is completely up to you, and mostly depends on the format you apply. You could mistakenly format a variable containing a date value with a datetime format... or even with a currency format... SAS won't notice or complain.
You also have to consider that SAS does not even actually have matrixes and arrays. It does provide a way to simulate their use to read and write to dataset variables.
That said, SAS does provide a whole lot of formats and informats that allow you to implement date and time manipulation.
Assuming you are coding within a data step, and assuming the "dates" are in dataset numeric variables, then the PUT function can extract the datepart you need to calculate row, column of the matrix element to write to, like so:
DATA table;
ARRAY dm{2,4} dm_r1c1-dm_r1c4 dm_r2c1-dm_r2c4;
beg_row = PUT(beg_date, YEAR4.)-2009;
end_row = PUT(end_date, YEAR4.)-2009;
beg_col = PUT(beg_date, QTR1.);
end_col = PUT(end_date, QTR1.);
dm{beg_row,beg_col} = beg_date;
dm{end_row,end_col} = end_date;
RUN;
... or if you are using a one-dimensional array:
DATA table;
ARRAY da{8} da_1-da_8;
beg_index = 4 * (PUT(beg_date, YEAR4.)-2010) + PUT(beg_date, QTR1.);
end_index = 4 * (PUT(end_date, YEAR4.)-2010) + PUT(end_date, QTR1.);
da{beg_index} = beg_date;
da{end_index} = end_date;
RUN;