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3 | <meta http-equiv="CONTENT-TYPE" content="text/html; charset=windows-1252"><title>PALM |
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4 | 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> |
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9 | <body style="direction: ltr;" lang="en-US"><h3 style="line-height: 100%;">4.5 Data analysis and |
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10 | visualization<br> |
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11 | </h3><p style="line-height: 100%;">PALM is able to |
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12 | output |
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13 | data of different quantities as time series, |
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14 | vertical profiles (usually horizontally averaged), two-dimensional |
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15 | cross sections or <font color="#000000">3d-volume data.</font> |
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16 | Depending on the kind of output (time series, profiles, etc.) and the |
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17 | output format (ASCII or binary) data are written |
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18 | to different files (file descriptions can be found in |
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19 | <a href="../app/chapter_3.4.html">chapter |
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20 | 3.4</a>). By default, all data |
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21 | output files are in NetCDF format (link to the NetCDF documentations in |
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22 | the Internet and on the PALM homepage), which can be processed by many |
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23 | public domain and commercial (graphic) software. Data from NetCDF files |
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24 | can also be easily read from FORTRAN programs provided that a NetCDF |
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25 | library is available. More detailed informations about the |
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26 | PALM-NetCDF-output is given in the next subchapter (<a href="../app/chapter_4.5.1.html">4.5.1</a>).</p> |
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27 | <p style="line-height: 100%;">Due to historical reasons, |
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28 | PALM can also |
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29 | output data in other formats suitable for some special graphic |
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30 | software. The exact format of these files corresponds to the |
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31 | 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> |
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32 | (time series, profiles), <a href="http://www.muk.uni-hannover.de/institut/software/iso2d_beschreibung.html">iso2d</a> |
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33 | (2d cross sections) and <b>AVS</b> (e.g. iso-surfaces of |
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34 | 3d volume |
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35 | data). The special files created by PALM can be directly used |
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36 | as input files for these plot programs. Beyond that, <b>profil</b> |
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37 | and |
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38 | <b>iso2d</b> need additional information |
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39 | about the plot layout (e.g. titles, axes labels, arrangement of the |
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40 | coordinate systems, etc.) provided by so-called parameter files<font color="#800000">. |
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41 | </font><font color="#000000">Thes</font>e |
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42 | files are also created by |
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43 | the PALM, providing a default layout (e.g. plots produced by <b>iso2d</b> |
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44 | show. only isolines and no color shading). Within certain |
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45 | limits the plot layout can be steered by some PALM parameters. |
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46 | Beyond that the user can edit the parameter files created by PALM and |
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47 | change, supplement or remove the given default values |
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48 | according to his needs. Beside the file with the (binary) data to be |
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49 | visualized, <b>AVS</b> additionally needs a file with |
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50 | coordinate information (likewise binary) and an ASCII file in the |
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51 | so-called FLD format, which describes the structure of the two binary |
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52 | files. Coordinate and FLD file are also created by the PALM. However, |
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53 | with <b>AVS</b> (differently than with <b>profile</b> |
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54 | or <b>iso2d</b>) |
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55 | the plot layout must always be additionally designed by the user |
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56 | with the help of the AVS network editor. </p> |
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57 | <p style="line-height: 100%;">In the following |
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58 | subchapters, steering |
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59 | of the different data output and how to create plots of the data is |
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60 | described by some examples. Not all details of steering |
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61 | are mentioned. If necessary, these can be found within the |
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62 | description of the respective parameters.<br> |
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63 | </p> For most purposes it should be sufficient to read <a href="../app/chapter_4.5.1.html">chapter 4.5.1</a> |
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64 | which explains the PALM-NetCDF-output.<hr> |
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65 | <p style="line-height: 100%;"><br><font color="#000080"><font color="#000080"><a href="chapter_4.4.html"><font color="#000080"><img src="left.gif" name="Grafik1" align="bottom" border="2" height="32" width="32"></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> |
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66 | <p style="line-height: 100%;"> <span style="font-style: italic;">Last |
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67 | change:</span> $Id: chapter_4.5.html 62 2007-03-13 02:52:40Z letzel $<br> |
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68 | </p></body></html> |
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