Note
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Estimate steady homogeneous parameters
Here we estimate transmissivity from the quasi steady state of a pumping test campaign with the classical thiem solution.
import welltestpy as wtp
campaign = wtp.load_campaign("Cmp_UFZ-campaign.cmp")
estimation = wtp.estimate.Thiem("Estimate_thiem", campaign, generate=True)
estimation.run()
Initializing the Shuffled Complex Evolution (SCE-UA) algorithm with 5000 repetitions
The objective function will be minimized
Starting burn-in sampling...
Initialize database...
['csv', 'hdf5', 'ram', 'sql', 'custom', 'noData']
* Database file '/home/docs/checkouts/readthedocs.org/user_builds/welltestpy/checkouts/latest/examples/Estimate_thiem/2023-04-18_09-58-26_db.csv' created.
Burn-in sampling completed...
Starting Complex Evolution...
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*** OPTIMIZATION SEARCH TERMINATED BECAUSE THE LIMIT
ON THE MAXIMUM NUMBER OF TRIALS
5000
HAS BEEN EXCEEDED.
SEARCH WAS STOPPED AT TRIAL NUMBER: 5057
NUMBER OF DISCARDED TRIALS: 21
NORMALIZED GEOMETRIC RANGE = 0.264139
THE BEST POINT HAS IMPROVED IN LAST 100 LOOPS BY 100000.000000 PERCENT
*** Final SPOTPY summary ***
Total Duration: 1.01 seconds
Total Repetitions: 5057
Minimal objective value: 0.0672645
Corresponding parameter setting:
transmissivity: -9.21029
******************************
Best parameter set:
transmissivity=-9.21029355734211
since we only have one parameter, we need a dummy parameter to estimate sensitivity
estimation.gen_setup(dummy=True)
estimation.sensitivity()
Initializing the Fourier Amplitude Sensitivity Test (FAST) with 260 repetitions
Starting the FAST algotrithm with 260 repetitions...
Creating FAST Matrix
Initialize database...
['csv', 'hdf5', 'ram', 'sql', 'custom', 'noData']
* Database file '/home/docs/checkouts/readthedocs.org/user_builds/welltestpy/checkouts/latest/examples/Estimate_thiem/2023-04-18_09-58-28_sensitivity_db.csv' created.
*** Final SPOTPY summary ***
Total Duration: 0.06 seconds
Total Repetitions: 260
Minimal objective value: 42.4221
Corresponding parameter setting:
transmissivity: -9.22575
dummy: 0.37107
Maximal objective value: 2.50666e+06
Corresponding parameter setting:
transmissivity: -16.0365
dummy: 0.311892
******************************
260
Total running time of the script: ( 0 minutes 3.409 seconds)