Creating a column vector from 5 variables.

[Mathieu Utting]

I'm looking to convert 5 separate variables into a single vector and store that vector in a new column. I've uploaded my data below, the idea is at the end I would have a new column named vector_supportpoints that would contain a vector under the following format: "var1 var2 var3 var4 var5". I would then like to calculate the Euclidean Norm of that vector as well as the inner product between vector_supportpoints and a vector that I will create later on which will be named vector_probabilities.

* Example generated by -dataex-. For more info, type help dataex
clear
input float(FSALEGR_LOWEST FSALEGR_LOW FSALEGR_MEDIUM FSALEGR_HIGH FSALEGR_HIGHEST)
 0   1 2.5 5  7
 0   1   5 7 10
 0 1.5   3 7 10
-3   2   3 7 10
 1   2   4 6 10
end

Thanks,
Matt

[Nick Cox]

You could use Mata for this. Here's a start:

clear
input float(FSALEGR_LOWEST FSALEGR_LOW FSALEGR_MEDIUM FSALEGR_HIGH FSALEGR_HIGHEST)
 0   1 2.5 5  7
 0   1   5 7 10
 0 1.5   3 7 10
-3   2   3 7 10
 1   2   4 6 10
end

mata
mycol = vec(st_data(. ,  "FSALEGR_LOWEST FSALEGR_LOW FSALEGR_MEDIUM FSALEGR_HIGH FSALEGR_HIGHEST"))
mycol
end