Program Reference




frontplot - Front data plotting


frontplot [parameters...] filename


Command Line Resource Default Description
-h help No Lists basic help information.
-df=filename default wxp.cfg Sets the name of the resource file.
-na=name name frontplot Specifies the name used in resource file parsing.
-me=level message out2 Specifies level of messages to be displayed
-fp=path file_path the current directory Specifies location of database files.
-dp=path data_path the current directory Specifies the location of the input raw data files.
-cp=path con_path the current directory Specifies location of decoded/converted data files
-ip=path image_path the current directory Specifies location of output image files (.gif/,png) from WXP.
-nc=name_conv name_conv name.cnv or name_conv file This sets which name convention file to use.
-if=in_file in_file frt_dat or frf_dat for forecasts Specifies the input file name tag.
-mf=filename... map_file wxp.map Specifies the name of the map database file. Multiple maps can be specified along with attributes to describe how to draw the map.
-cu=[hour] current none This specifies to use current data files.
-ho=hour hour none Specifies the exact hour that a data file is valid for.
-nh=hours[,skip] num_hour Value Generally 0 Specifies the number of hours worth of data to use in the program
-tz=zone_name timezone UTC Sets timezone used in date labels
-ft=time time none Sets the forecast time for forecast fronts.
-pd=domain plot_domain program dependent, mostly "us" Sets the plotting domain
-sc=type plot_scale 1.0 Specifies a scaling factor for all plotted text, symbols, vectors, etc.
-pa=param[,param...] parameter none Sets additional parameters:
  • noprlab - Don't print pressure labels on his and lows
  • nobarb - Don't add barbs to fronts
  • prrad=## - Radius to eliminate his and lows. This is to eliminate clutter (default=3)
-dr=value[,value...] draw all Specifies which part of the plot is to be drawn.
-la=type label Program defaults Specifies the labels to be plotted around the plot. By default, labels are generated by the program and plotted above and below the plot. This resource overrides these labels.
-fl=font_file[,font_file...] font_list modern.fnt Specifies a list of fonts to use in the plots.
-ct=color_table color_table wxp.clr Specifies the color table to use in the plot. This maps color names to actual RGB color values.
-col=color[:attribute...] color_label white (black on inverse plots) Specifies the text color for labels above and below the plot.
-cod=color[:attribute...] color_data green (for most programs) Specifies the color for plotted data.
-cofr=color[:attribute...],... color_front blue:we=2,red:we=2,blue:wi=2,red:wi=2, magenta:wi=2,brown:wi=2,lgray,white Specifies the color for fronts
-com=color[:attribute...] color_map red (for most programs) Specifies the color for background maps.
-coll=color[:attribute...] color_latlon magenta:st=dsh Specifies the color for lat/lon lines.
-de=device[,parameters] device d for display Specifies the output device.
-ti=title title The name of the program or the value of the name resource Specifies the window title.
-ic icon off Specifies whether to open window in iconified mode.
-bg=color background black Specifies the background color of the window.
-ge=widthxheight[+x+y] geometry 640x512 (for windowed plots) Specifies the window and paper geometry.
filename (positional) filename none Specify input filename


This program will plot coded front data in the ASUS01 and FSUS01 products. The resrc:time resource can be used to access the forecast fronts. The in_file also can be used to access the forecast fronts. High and Low pressure centers along with cold, warm, stationary and occluded fronts and troughs are plotted. The colors are controlled by the resrc:color_data or resrc:color_front resource. The colors are comma separated and represent the following:

Index Type Description Default
1 High High pressure center blue:we=2
2 Low Low pressure center red:we=2
3 Cold Cold fronts blue:wi=2
4 Warm Warm fronts red:wi=2
5 Occluded Occluded fronts magenta:wi=2
6 Trofs Troughs brown:wi=2
7 Misc Misc data lgray
8 Label Labels for highs and lows white

The fronts are drawn using a cubic spline smoothing. Barbs are then added to the fronts. Troughs are drawn as dashed lines.




Last updated October 2013