2014-12-02: resort to keep variables with the same dimensions together.

resort to keep variables with the same dimensions together.

diff --git a/examples/ensemble-estimation.w b/examples/ensemble-estimation.w
--- a/examples/ensemble-estimation.w
+++ b/examples/ensemble-estimation.w
@@ -78,6 +78,9 @@ define* : write-multiple . x
 ;; Start with the simple case: One variable and independent observations (R diagonal)
 ;; First define a truth
 define x^true '(0.5 0.6 0.7 0.1)
+;; And add an initial guess of the parameters
+define x^b '(1 1 1 1) ; initial guess
+define P : make-covariance-matrix-from-standard-deviations '(0.5 0.1 0.3 0.1)
 
 ;; Then generate observations
 define y⁰-num 1000
@@ -119,9 +122,6 @@ define R : make-covariance-matrix-from-s
 ;; The actual observations
 ;; define y⁰ : list-ec (: i y⁰-num) : + y⁰-mean : * y⁰-std : random:normal
 
-;; And add an initial guess of the parameters
-define x^b '(1 1 1 1) ; initial guess
-define P : make-covariance-matrix-from-standard-deviations '(0.5 0.1 0.3 0.1)
 
 define : EnSRT H x P y R y-pos N
        . "Observation function H, parameters x,