Add variables, assign values & sort

[dhir]

Hello, I need to add variables in an existing dataset, assign values to one of them based on condition. Then sort the dataset based date & time (in that order) and add serial no. to the observation. The input and output required are shown in the attached excel. 

Tried writing a code using input, assign statement but could not achive the desired output.

Thank you in advance. 

[Kurt_Bremser]

- to post data, use a datastep; use the macro provided in https://communities.sas.com/t5/SAS-Communities-Library/How-to-create-a-data-step-version-of-your-dat... to create a datastep that contains an exact replica of your existing dataset.

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[Reeza]

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@dhir wrote:

Tried writing a code using input, assign statement but could not achive the desired output.

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Post what you've tried, explain your question in detail and include your data and question directly into the forum rather than as an attachment please.

[dhir]

Input dataset: 

Date	Time	Price	Volume	AskPrice	BidPrice	Bidsize	Asksize
19890103	9:31:48	53.5	100	.	.	.	.
19890103	9:31:54	53.25	100	.	.	.	.
19890103	9:32:30	53.25	1000	.	.	.	.
19891031	15:49:32	.	.	81.75	81.25	-99	-99
19891031	15:54:35	.	.	81.75	81.5	-99	-99
19891031	15:55:40	.	.	81.75	81.25	-99	-99

Steps required in SAS Code:

1 . Add 2 variables TQ (String 1 character) and Id (numeric) at the end and beginning of variables respectively

2.  Assign values of TQ to each observation

2 (a)  If Price or volume greater than or equal to zero assign "T"

2 (b) else assign "Q"

3. Sort all observations:

3 (a) first by date (smallest to largest)

3 (b) second by time (smallest to largest)

4. So that are listed date & time wise

5. Then add serial no in the id column (1 to end of file)

Output dataset: 

Id	Date	Time	Price	Volume	AskPrice	BidPrice	Bidsize	Asksize	TQ
1	19890103	9:31:48	53.5	100	.	.	.	.	T
2	19890103	9:31:54	53.25	100	.	.	.	.	T
3	19890103	9:31:54	.	.	81.75	81.25	-99	-99	Q
4	19890103	9:35:30	53.25	1000	.	.	.	.	T
5	19891031	15:54:35	.	.	81.75	81.5	-99	-99	Q
6	19891031	15:55:40	.	.	81.75	81.25	-99	-99	Q

[Kurt_Bremser · Accepted solution]

Your "have" and "want" data don't match Date- and Time-wise (

19890103

9:35:30

is not present in have, while

19891031

15:49:32

is missing from want.

Otherwise, this code will do what you want:

data have;
infile cards dlm='09'x;
input Date :yymmdd8. Time :time8. Price Volume AskPrice BidPrice Bidsize Asksize;
format Date yymmddn8. Time time8.;
cards;
19890103	9:31:48	53.5	100	.	.	.	.
19890103	9:31:54	53.25	100	.	.	.	.
19890103	9:32:30	53.25	1000	.	.	.	.
19891031	15:49:32	.	.	81.75	81.25	-99	-99
19891031	15:54:35	.	.	81.75	81.5	-99	-99
19891031	15:55:40	.	.	81.75	81.25	-99	-99
;
run;

data want_int;
set have;
if price >= 0 or volume >= 0
then TQ = 'T';
else TQ = 'Q';
run;

proc sort data=want_int;
by date time;
run;

data want;
Id = _n_;
set want_int;
run;

Note what I meant by "present data in a data step". Anybody can create an exact replica of my test data with a simple copy/paste and run;

[dhir]

The code work for me. 

Thank you KurtBremser.