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Trapped Radiation ENvironment model Development

Frequently Asked Questions

[ Introduction | General questions | Technical questions | Appendix ]

Introduction

    This list provides a source of answers to commonly (and some uncommonly) asked questions regarding the use of the UNILIB Library . This list is roughly divided into two categories: general questions and technical questions.

    The latest version of this FAQ page can always be found at http://www.oma.be/NEEDLE/unilib/20x/faq.htm. If you have suggestions and comments please send an e-mail message to
    M.Kruglanski@BIRA-IASB.OMA.BE.


    The information on this page and the subsequent ones is only related to versions of Unilib up to 2.09.
    Please check www.mag-unilib.eu for more recent update.

General questions

    G.01 What is the purpose of the library ?
    G.02 Where to find the UNILIB library and documentation ?
    G.03 Who is using the UNILIB library ?
    G.04 How to install the IRI model ?
    G.05 Which are the coordinates and units used ?
    G.06 How to start using the UNILIB library ?
    G.07 Does a similar software or library exist ?
    G.08 How is defined a drift shell ?
    G.09 How to quickly evaluate the capabilities of the UNILIB library ?

Technical questions

    T.01 How to link the UNILIB library ?
    T.02 Why is the object IRIS12 not resolved ?
    T.03 How to customize the magnetic field model used by the library ?
    T.04 Why are Roederer's L* and McIlwain's L parameters different ?
    T.05 How to pass correctly the subroutine arguments in IDL ?
    T.06 What is the precision of the field line tracing algorithm ?
    T.07 Which subroutines are mandatory ?
    T.08 How to link the library in IDL/PV-WAVE ?
    T.09 What about a Linux version of the library ?
    T.10 How to call the library from Win32 application ?

Appendix

Reported bugs

    26-Aug-97, v1.05, R.01: Anomalous return of subroutine UD310 with error code -41108
    27-Aug-97, v1.05, UT985: Malfunction when field line extended to foot points
    10-Sep-97, v1.06, R.02: Erroneous behaviour of most of the external magnetic field models
    24-Oct-97, v1.07, UT550: Erroneous behaviour of the coordinate transformations relative to GSM and MAG coordinate systems
    18-Dec-97, v1.11, R.03: Malfunction of subroutine UF426
    14-Dec-98, v2.00, UL242: Lack of accuracy for low values of I
    20-Jan-98, v2.00, UD315 and UD327: Error in the interpolation algorithm and inaccurate evaluation of the point with the lowest altitude