Hello,
I have tuition fees laid out for 4 years (Variables Fee_YR_01-Fee_YR_04
) starting current year (Fee_YR_01
). Variables Increase_YR_01-Increase_YR_04
in the sample dataset shows the proposed tuition fee increase rate (in percent) based on the previous year. I want to calculate the future tuition based on this proposed tuition increase rate (in the new variables Fee_New_YR_02 - Fee_New_YR_04). I want a dynamic solution for this calculation. Thank you all.
My data set looks like this:
data have;
input Fee_YR_01 Fee_YR_02 Fee_YR_03 Fee_YR_04 Increase_YR_01 Increase_YR_02 Increase_YR_03 Increase_YR_04;
datalines;
1000 1050 1100 1150 0 20 20 20
1000 1070 1100 1150 0 20 20 20
3000 3100 3150 3200 0 15 15 15
3000 3200 3200 3300 0 15 15 15
4000 4150 4200 4250 0 15 15 15
4000 4200 4300 4350 0 15 15 15
;
RUN;
This is the output I want:
Fee_New_YR_02 | Fee_New_YR_03 | Fee_New_YR_04 |
1200 | 1260 | 1320 |
1200 | 1284 | 1320 |
3450 | 3565 | 3622.5 |
3450 | 3680 | 3680 |
4600 | 4772.5 | 4830 |
4600 | 4830 | 4945 |
Calculations: Fee_New_YR_02=Fee_YR_01 * 1.2 (increased by 20%)
I have shown you a small set of data. But I have 150 variables for tuition fees and 150 variables for the tuition rate increase. So I need help on how to do it dynamically.
Look up the RETAIN statement, which tells SAS to avoid resetting new variables to missing values from iteration to iteration. You apparently want to retain the values of the Fee_New_AY_01 - Fee_New_AY_04 variables calculated when _n_=1.
Hello,
I have tuition fees laid out for 4 years (Variables Fee_YR_01-Fee_YR_04
) starting current year (Fee_YR_01
). Variables Increase_YR_01-Increase_YR_04
in the sample dataset shows the proposed tuition fee increase rate (in percent) based on the previous year. I want to calculate the future tuition based on this proposed tuition increase rate (in the new variables Fee_New_YR_02 - Fee_New_YR_04). I want a dynamic solution for this calculation. Thank you all.
My data set looks like this:
data have;
input Fee_YR_01 Fee_YR_02 Fee_YR_03 Fee_YR_04 Increase_YR_01 Increase_YR_02 Increase_YR_03 Increase_YR_04;
datalines;
1000 1050 1100 1150 0 20 20 20
1000 1070 1100 1150 0 20 20 20
3000 3100 3150 3200 0 15 15 15
3000 3200 3200 3300 0 15 15 15
4000 4150 4200 4250 0 15 15 15
4000 4200 4300 4350 0 15 15 15
;
RUN;
This is the output I want:
Fee_New_YR_02 | Fee_New_YR_03 | Fee_New_YR_04 |
1200 | 1260 | 1320 |
1200 | 1284 | 1320 |
3450 | 3565 | 3622.5 |
3450 | 3680 | 3680 |
4600 | 4772.5 | 4830 |
4600 | 4830 | 4945 |
Calculations: Fee_New_YR_02=Fee_YR_01 * 1.2 (increased by 20%)
I have shown you a small set of data. But I have 150 variables for tuition fees and 150 variables for the tuition rate increase. So I need help on how to do it dynamically.
Please do not post the question in multiple locations.
Update your dimensions and variable series accordingly and this should work:
data want;
set have;
array fee_hist (4) fee_yr_01 - fee_yr_04;
array increase(4) increase_yr_01 - increase_yr_04;
array fee_new (2:4) fee_new_yr_02 - fee_new_yr_04;
do i=2 to 4;
fee_new(i) = fee_hist(i-1) * (1+(increase(i)/100));
end;
run;
Or slightly more dynamically, update your end of the series:
data want;
set have;
array fee_hist (*) fee_yr_01 - fee_yr_04;
array increase(*) increase_yr_01 - increase_yr_04;
array fee_new (*) fee_new_yr_02 - fee_new_yr_04;
do i=2 to dim(fee_hist);
fee_new(i-1) = fee_hist(i-1) * (1+(increase(i)/100));
end;
run;
Here's a tutorial on using Arrays in SAS
https://stats.idre.ucla.edu/sas/seminars/sas-arrays/
@mlogan wrote:
Hello,
I have tuition fees laid out for 4 years (Variables
Fee_YR_01-Fee_YR_04
) starting current year (Fee_YR_01
). VariablesIncrease_YR_01-Increase_YR_04
in the sample dataset shows the proposed tuition fee increase rate (in percent) based on the previous year. I want to calculate the future tuition based on this proposed tuition increase rate (in the new variables Fee_New_YR_02 - Fee_New_YR_04). I want a dynamic solution for this calculation. Thank you all.
My data set looks like this:
data have; input Fee_YR_01 Fee_YR_02 Fee_YR_03 Fee_YR_04 Increase_YR_01 Increase_YR_02 Increase_YR_03 Increase_YR_04; datalines; 1000 1050 1100 1150 0 20 20 20 1000 1070 1100 1150 0 20 20 20 3000 3100 3150 3200 0 15 15 15 3000 3200 3200 3300 0 15 15 15 4000 4150 4200 4250 0 15 15 15 4000 4200 4300 4350 0 15 15 15 ; RUN;
This is the output I want:
Fee_New_YR_02 Fee_New_YR_03 Fee_New_YR_04 1200 1260 1320 1200 1284 1320 3450 3565 3622.5 3450 3680 3680 4600 4772.5 4830 4600 4830 4945
Calculations: Fee_New_YR_02=Fee_YR_01 * 1.2 (increased by 20%)
I have shown you a small set of data. But I have 150 variables for tuition fees and 150 variables for the tuition rate increase. So I need help on how to do it dynamically.
Thank you Reeza. Your code worked for me. I just have slightly different requirements now and wondering if you can help.
I want the calculated output of the first row will be copied below all the way to the end.
I was able to do the calculation on the first line, but don't know how to copy downward. Thank you for your help.
data have;
input Fee_YR_01 Fee_YR_02 Fee_YR_03 Fee_YR_04 Increase_YR_01 Increase_YR_02 Increase_YR_03 Increase_YR_04;
datalines;
1000 1050 1100 1150 0 20 20 20
1000 1070 1100 1150 0 20 20 20
3000 3100 3150 3200 0 15 15 15
3000 3200 3200 3300 0 15 15 15
;
RUN;
DATA Want;
SET Have;
ARRAY Increase_Rate(*) Increase_YR_01 - Increase_YR_04;
ARRAY Fee_New(*) Fee_New_AY_01 - Fee_New_AY_04;
Fee_New_AY_01=Fee_YR_01;
DO i=2 TO dim(Fee_New);
IF _n_=1 THEN fee_new(i) = FLOOR(( fee_new(i-1) * (1+(Increase_Rate(i)/100)) )/10)*10;
END;
DROP i;
RUN;
Expected Output:
Fee_YR_01 | Fee_YR_02 | Fee_YR_03 | Fee_YR_04 | Increase_YR_01 | Increase_YR_02 | Increase_YR_03 | Increase_YR_04 | Fee_New_AY_01 | Fee_New_AY_02 | Fee_New_AY_03 | Fee_New_AY_04 |
1000 | 1050 | 1100 | 1150 | 0 | 20 | 20 | 20 | 1000 | 1200 | 1440 | 1720 |
1000 | 1070 | 1100 | 1150 | 0 | 20 | 20 | 20 | 1000 | 1200 | 1440 | 1720 |
3000 | 3100 | 3150 | 3200 | 0 | 15 | 15 | 15 | 3000 | 1200 | 1440 | 1720 |
3000 | 3200 | 3200 | 3300 | 0 | 15 | 15 | 15 | 3000 | 1200 | 1440 | 1720 |
Hi all,
I have lat 4 year tuition fee laid out as Fee_YR_01-Fee_YR_04 and their corresponding increased rate Increase_YR_01-Increase_YR_04. I want 4 new rows which will calculate the tuition fee for the next 4 years based on their previous year tuitions and corresponding increase. But instead of calculating all 4 rows, I want the calculated output of the first row to be copied below all the way to the end.
I was able to do the calculation on the first row, but don't know how to copy downward. Can anyone help please. Thank you
data have;
input Fee_YR_01 Fee_YR_02 Fee_YR_03 Fee_YR_04 Increase_YR_01 Increase_YR_02 Increase_YR_03 Increase_YR_04;
datalines;
1000 1050 1100 1150 0 20 20 20
1000 1070 1100 1150 0 20 20 20
3000 3100 3150 3200 0 15 15 15
3000 3200 3200 3300 0 15 15 15
;
RUN;
DATA Want;
SET Have;
ARRAY Increase_Rate(*) Increase_YR_01 - Increase_YR_04;
ARRAY Fee_New(*) Fee_New_AY_01 - Fee_New_AY_04;
Fee_New_AY_01=Fee_YR_01;
DO i=2 TO dim(Fee_New);
IF _n_=1 THEN fee_new(i) = FLOOR(( fee_new(i-1) * (1+(Increase_Rate(i)/100)) )/10)*10;
END;
DROP i;
RUN;
Expected Output:
Fee_YR_01 | Fee_YR_02 | Fee_YR_03 | Fee_YR_04 | Increase_YR_01 | Increase_YR_02 | Increase_YR_03 | Increase_YR_04 | Fee_New_AY_01 | Fee_New_AY_02 | Fee_New_AY_03 | Fee_New_AY_04 |
1000 | 1050 | 1100 | 1150 | 0 | 20 | 20 | 20 | 1000 | 1200 | 1440 | 1720 |
1000 | 1070 | 1100 | 1150 | 0 | 20 | 20 | 20 | 1000 | 1200 | 1440 | 1720 |
3000 | 3100 | 3150 | 3200 | 0 | 15 | 15 | 15 | 3000 | 1200 | 1440 | 1720 |
3000 | 3200 | 3200 | 3300 | 0 | 15 | 15 | 15 | 3000 | 1200 | 1440 | 1720 |
Look up the RETAIN statement, which tells SAS to avoid resetting new variables to missing values from iteration to iteration. You apparently want to retain the values of the Fee_New_AY_01 - Fee_New_AY_04 variables calculated when _n_=1.
Hi mkeintz, Do you know how I can stop RETAIN function to copy the value all the way till the blank line? I want it to stop at one point when my another by value (sorted column) ends.
Thanks.
I have merged your posts, please don't repost questions.
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