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-This package is provided as a companion to the papers
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-
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- Transport policies in polycentric cities, by
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- Q. David et M. Kilani, 2019.
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-
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-The package is composed of two executables :
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-
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-- scbd : fixed frequencies
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-- f_scbd : endogenous frequencies
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-
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-The optimization step relies on the packages BOBYQA
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-and COBYLA written by Pr. Powell (the double precision
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-versions are used).
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-
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-The file "scbd.dat" is read for model parameters.
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-
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-The source code is located in the "src" subdirectory.
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-The subroutines are separated into several files.
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-The EQUILIBRIUM subroutine is central since it is the
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-one where the network equilibrium is computed.
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-
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-
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-INSTALLATION (unix like systems)
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-================================
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-
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-0. For a unix-like system (for Windows
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- the process should be similar)
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- We assume that gfortran (or an equivalent)
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- is installed.
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-
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-1. Unzip the file "scbd.zip"
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-
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-2. Change to the directory root of that uncompressed folder.
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-
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-3. Type "make" (gfortran should be installed)
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- "scbd" and "f_scbd" executables are produced
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-
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-4. Edit "scbd.dat" file and save
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-
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-5. Type "./scbd"
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- The output is written to the screen.
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- Standard redirection can be used to save output
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- to file.
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-
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-
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-REMARK
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-======
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-
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-For some parameter values the obtained output may not
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-be optimal because the trust region search is
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-not convenient. In case of doubt, it is preferable to
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-change the values of parameters "RHOBEG" and "RHOEND"
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-and check for robustness. Too small values may miss the
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-exploration of the optimal region and values that are
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-too large are likely to yield instability and non
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-convergence. The given values should work well
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-if the values of the model parameters are are not
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-changed so much.
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