simple-example.1

New users requested a simple example.
All files are included in one directory. 
All input is in ucode_dupuit.in. 
The process model is dupuit.exe which is presented in most 
beginning ground water books and is illustrated at this link:
System with a horizontal no-flow lower boundary, fixed head
on the left and right, and recahrge flux on the top boundary.

The batch file ucode_dupuit.bat executes parameter estimation
  followed by residual analysis and advanced residual analysis.
The regression is performed on a simple analytical model that is  
  executed via dupuit.bat. 
The source and executable for the  
  dupuit code are in the sub-folder code_dupuit
The process-model input file is generated from dupuit.in.tpl

Ucode_dupuit.in directs ucode to substitute parameter values in
dupuit.in.tpl, execute dupuit.bat which runs the dupuit code in the
code_dupuit folder and generates output dupuit.out in the folder
simple-example.1, then based on the instructions in ucode_dupuit.ins
ucode extracts the results of the simulation from dupuit.out and uses
those values to calculate residuals and sensitivities, ucode
iteratively uses residuals and sensitivities to update the parameters
and repeats until the parameters change less than tolpar. If ucode is
successful, default residual analyses are executed from
ucode_dupuit.bat

The observation data provided include a small amount of noise.
Values below are in meters and days
The true heads and flow at the left and right boundary are as follows:
precise analytically calculated heads from left to right at
  5m, 15m, 25m, 35m, 45m are:
  5.50475 5.89724 5.81146 5.22393 3.91489
with noise as entered for observations in the regression they are:
  5.505 5.897 5.812 5.223 3.915
flow at the left boundary is:
  -0.00498
with noise as entered in the regression:
  -0.0050
flow at the right boundary is:
  0.00872
with noise as entered in the regression:
  0.0088

New users may wish to experiment with alternative observations which
can be generated by running the forward model with altered input in
dupuit.in and getting the results from dupuit.out.

New users may also experiment with estimating other parameters, such as
the heads at the boundaries in various combinations with K and w.

One might also experiment with various settings in the ucode input.

Notice that if the flow is not included as an onservation in the
regression then only the ratio of K and W can be estimated, not
their absolute values because the parameters are completely correlated
when only heads are used as observations.