The RATS Software Forum

Dear Tom,

I would like to store the correlation between two variables, but my following command does not do the job. Could you please direct me as to what is missing in my code? Thank you.

cmom(corr,print)
# gdp_detrend govt_detrend
compute mycorrs = %cmom(gdp_detrend,govt_detrend)

You want %cmom(1,2)---the elements of the array are accessed by position, not by the variable.

Hi Tom,

I fixed the code but the output doesn't seem to exist.

cmom(corr,print)
# gdp_detrend govt_detrend
compute mycorrs = %cmom(1,2)

print / mycorrs

## SX22. Expected Type SERIES[REAL], Got REAL Instead
>>>>print / mycorrs<<<<

MYCORRS is a number, not a series. Use DISPLAY, not PRINT.

Hi Tom,

Thank you for the advise. Since I have a panel data, is there a way to store the output by country? I have attempted the following procedure, and I received an error message from the system. Perhaps, I am doing this incorrectly.

do i=1,61
cmom(corr,print) i//1970:1 i//2013:1
# gdp_detrend govt_detrend
compute mycorrs(i) = %cmom(1,2)
display mycorrs(i)
end do i

## SX11. Identifier MYCORRS is Not Recognizable. Incorrect Option Field or Parameter Order?
>>>> compute mycorrs(<<<<

add

clear mycorrs

before the loop so mycorrs is recognized as a series.

This will create a vector with 1//1970:1 2//1986:1 instead of a matrix with 1//1970:1 61//2013:1. Ideally, I would like to have the value of correlation assigned to each country over time. Is there a way to modify this setting? Thank you.

Instead of compute do

set mycorrs i//1970:1 i//2013:1 = %cmom(1,2)

Great. Thank you very much, Tom.