| [154] | 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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