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| 1 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> |
| 2 | <html><head> |
| 3 | <meta http-equiv="CONTENT-TYPE" content="text/html; charset=windows-1252"><title>PALM chapter 4.5</title> <meta name="GENERATOR" content="StarOffice 7 (Win32)"> <meta name="AUTHOR" content="Siegfried Raasch"> <meta name="CREATED" content="20041015;12234229"> <meta name="CHANGED" content="20041022;13412723"> <meta name="KEYWORDS" content="parallel LES model"> <style> |
| 4 | <!-- |
| 5 | @page { size: 21cm 29.7cm } |
| 6 | --> |
| 7 | </style></head> |
| 8 | <body style="direction: ltr;" lang="en-US"><h3 style="line-height: 100%;">4.5 Data analysis and |
| 9 | visualization<br> |
| 10 | </h3><p style="line-height: 100%;">PALM is able to |
| 11 | output |
| 12 | data of different quantities as time series, |
| 13 | vertical profiles (usually horizontally averaged), two-dimensional |
| 14 | cross sections or <font color="#000000">3d-volume data.</font> |
| 15 | Depending on the kind of output (time series, profiles, etc.) and the |
| 16 | output format (ASCII or binary) data are written |
| 17 | to different files (file descriptions can be found in |
| 18 | <a href="../app/chapter_3.4.html">chapter |
| 19 | 3.4</a>). By default, all data |
| 20 | output files are in NetCDF format (link to the NetCDF documentations in |
| 21 | the Internet and on the PALM homepage), which can be processed by many |
| 22 | public domain and commercial (graphic) software. Data from NetCDF files |
| 23 | can also be easily read from FORTRAN programs provided that a NetCDF |
| 24 | library is available. More detailed informations about the |
| 25 | PALM-NetCDF-output is given in the next subchapter (<a href="../app/chapter_4.5.1.html">4.5.1</a>).</p> |
| 26 | <p style="line-height: 100%;">Due to historical reasons, |
| 27 | PALM can also |
| 28 | output data in other formats suitable for some special graphic |
| 29 | software. The exact format of these files corresponds to the |
| 30 | requirements of the respective software. Still available at IMUK are <a href="http://www.muk.uni-hannover.de/institut/software/profil_beschreibung.html">profil</a> |
| 31 | (time series, profiles), <a href="http://www.muk.uni-hannover.de/institut/software/iso2d_beschreibung.html">iso2d</a> |
| 32 | (2d cross sections) and <b>AVS</b> (e.g. iso-surfaces of |
| 33 | 3d volume |
| 34 | data). The special files created by PALM can be directly used |
| 35 | as input files for these plot programs. Beyond that, <b>profil</b> |
| 36 | and |
| 37 | <b>iso2d</b> need additional information |
| 38 | about the plot layout (e.g. titles, axes labels, arrangement of the |
| 39 | coordinate systems, etc.) provided by so-called parameter files<font color="#800000">. |
| 40 | </font><font color="#000000">Thes</font>e |
| 41 | files are also created by |
| 42 | the PALM, providing a default layout (e.g. plots produced by <b>iso2d</b> |
| 43 | show. only isolines and no color shading). Within certain |
| 44 | limits the plot layout can be steered by some PALM parameters. |
| 45 | Beyond that the user can edit the parameter files created by PALM and |
| 46 | change, supplement or remove the given default values |
| 47 | according to his needs. Beside the file with the (binary) data to be |
| 48 | visualized, <b>AVS</b> additionally needs a file with |
| 49 | coordinate information (likewise binary) and an ASCII file in the |
| 50 | so-called FLD format, which describes the structure of the two binary |
| 51 | files. Coordinate and FLD file are also created by the PALM. However, |
| 52 | with <b>AVS</b> (differently than with <b>profile</b> |
| 53 | or <b>iso2d</b>) |
| 54 | the plot layout must always be additionally designed by the user |
| 55 | with the help of the AVS network editor. </p> |
| 56 | <p style="line-height: 100%;">In the following |
| 57 | subchapters, steering |
| 58 | of the different data output and how to create plots of the data is |
| 59 | described by some examples. Not all details of steering |
| 60 | are mentioned. If necessary, these can be found within the |
| 61 | description of the respective parameters.<br> |
| 62 | </p> For most purposes it should be sufficient to read <a href="../app/chapter_4.5.1.html">chapter 4.5.1</a> |
| 63 | which explains the PALM-NetCDF-output.<hr> |
| 64 | <p style="line-height: 100%;"><br><font color="#000080"><font color="#000080"><a href="chapter_4.4.2.html"><font color="#000080"><img style="border: 2px solid ; width: 32px; height: 32px;" alt="" src="left.gif" name="Grafik1"></font></a><a href="index.html"><font color="#000080"><img src="up.gif" name="Grafik2" align="bottom" border="2" height="32" width="32"></font></a><a href="chapter_4.5.1.html"><font color="#000080"><img src="right.gif" name="Grafik3" align="bottom" border="2" height="32" width="32"></font></a></font></font></p> |
| 65 | <p style="line-height: 100%;"> <span style="font-style: italic;">Last |
| 66 | change:</span> $Id: chapter_4.5.html 97 2007-06-21 08:23:15Z witha $<br> |
| 67 | </p></body></html> |
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