Description
If you open the
Y-Variable dialog
and select the Popup control in the New variable field,
the following list of variables will be displayed:
Column Index
The Column Index field value in the
Y-Variable above is covered by the New variable field Popup control.
(There is a similar choice of variables in the
X-Variable dialog
.)
The value of the Column Index field
refers to the component of the corresponding vector.
Given a vector and column index,
its value will be plotted as a function of time index.
If the Column index is greater than the length of the vector,
the corresponding value in the table will be the
bad value flag
.
Row Index
The Row Index field value in the Y-Variable dialog
above is covered by the New variable field Popup control.
The value of the Row Index field is only used for the c
variable.
k
This is the time index which takes on
integer values between 1
and the number of time points, nk
.
The only valid Column Index value for k
is 1
.
z
This is the data vector which is defined the
Data file
.
The Column Index value denotes a data column within the Data file.
x
This is the estimate of the
State vector
that was determined by the last
Fit Command
.
The Column Index value denotes a component of the State vector.
s
This is the simulated value for the
State vector
that was computed by the last
Simulation Command
.
The Column Index value denotes a component of the State vector.
e
This is the an estimate of the
standard error in the estimate x
that was corresponds to the last
Fit Command
.
If xt
is the true state value,
the i
th column of e
at time index k
is
and estimate of
_____________________
\/ E[(x (i) - xt(i))^2]
k k
The Column Index value denotes the component of the State vector.
h
This is the
Measurement function
value that corresponds to the State estimate x
; i.e.
h (x )
k k
The Column Index value denotes a column within the
Data file
.
d
This is the simulated State vector
minus the estimated State vector; i.e.,
d = s - x
k k k
The Column Index value denotes the component of the State vector.
v
This is the data minus the
Measurement function
evaluated at the estimated State vector; i.e.,
v = z - h (x)
k k k k
The Column Index value denotes a column within the
Data file
.
w
This is the actual State estimate
minus the predicted State estimate; i.e.,
w = x - g (x)
k k k-1 k-1
The Column Index value denotes the component of the State vector.
It is important to note that this variable is not defined for
time index k = 1
.
c
If the Row Index field value is i
and the
Column Index field value is j
,
this is the correlation between the
i
th and j
th component of the estimate x
.
To be specific,
if xt
is the true value of the State vector,
it is an estimate of
E[ (x (i) - xt (i)) (x (j) - xt (j)) ]
k k k k
---------------------------------------------
____________________________________________
\/ E[(x (i) - xt (i))^2] E[(x (j) - xt (j))^2]
k k k k