1 | Usage of PALM NCL script crosssections.ncl |
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2 | ========================================== |
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3 | Last change: $Id: crosssections.usage.txt 127 2007-10-23 11:05:25Z letzel $ |
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4 | Marcus Letzel, 17 July 2007 |
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5 | |
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6 | Command-line syntax |
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7 | =================== |
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8 | ncl crosssections.ncl [parameters] |
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9 | |
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10 | The parameter syntax depends on their data type: |
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11 | A) numeric data : parameter=value (for example t=0) |
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12 | B) character string: 'parameter="string"' (for example 'var="u_xy"') |
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13 | |
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14 | Alphabetical parameter list |
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15 | =========================== |
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16 | Name Default value Meaning |
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17 | ----------------------------------------------------------------------------- |
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18 | cm "ncview_default" colormap |
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19 | di "" input directory (with final /) |
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20 | d =di output directory (with final /) |
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21 | fi "example_xy" base name of input file (without suffix) |
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22 | fo "" base name of output files (without suffix) |
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23 | fill_mode "AreaFill" fill mode for mode="Fill": |
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24 | "AreaFill", "RasterFill" or "CellFill" |
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25 | mode "Fill" output mode ("Fill" or "Line") |
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26 | t 0 output time step |
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27 | var "u_xy" variable to be output |
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28 | xs -1e+38 output x-coordinate range start (in m) |
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29 | xe +1e+38 output x-coordinate range end (in m) |
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30 | ys -1e+38 output y-coordinate range start (in m) |
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31 | ye +1e+38 output y-coordinate range end (in m) |
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32 | zs -1e+38 output z-coordinate range start (in m) |
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33 | ze +1e+38 output z-coordinate range end (in m) |
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34 | |
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35 | Usage |
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36 | ===== |
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37 | This script draws NCL contour plots from two-dimensional cross-sections of |
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38 | NetCDF data produced by PALM. Instantaneous or time-averaged xy-, xz-, yz- or |
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39 | 3D-data can be used with this script. |
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40 | |
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41 | The sectional plane has neither a default orientation nor a default position. |
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42 | Both must be specified together using the coordinate range parameters: |
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43 | - For xy cross-sections specify zs and ze (with zs=za). |
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44 | - For xz cross-sections specify ys and ye (with ys=ya). |
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45 | - For yz cross-sections specify xs and xe (with xs=xa). |
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46 | |
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47 | The remaining coordinate range parameters can optionally be used to restrict |
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48 | the output coordinate range. |
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49 | |
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50 | By default, only screen output is produced. Additional file output is optional |
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51 | and requires to specify the parameter fo. This will create three files: fo.pdf, |
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52 | fo.eps and fo.ps. |
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53 | |
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54 | Input and output files can optionally be preceeded by an input and output |
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55 | directory di and d, respectively. If not specified, this scripts expects the |
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56 | input file to reside in the current directory. |
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57 | |
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58 | The contours can be drawn either in "Fill" (default) or "Line" mode. |
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