SNTSER draws a time series at a sounding station. INPUT PARAMETERS SNFILE *Sounding data file DATTIM *Date/time TAXIS *Time1-time2-tinc;lbl;gln;tck LEVELS *Vertical levels VCOORD *Vertical coordinate type SNPARM *Sounding parameter list STNDEX *Stability indices AREA *Data area PTYPE *Plot type/h:w ratio/margins YAXIS *Ystrt/ystop/yinc/lbl;gln;tck BORDER *Background color/dash/width LINE *Line color/type/width/label MARKER *Marker color/type/size/width/hw TITLE *Title color/line/title CLEAR *Clear screen flag PANEL *Panel location/color/dash/width DEVICE *Graphics device PROGRAM DESCRIPTION SNTSER draws a time series plot for a sounding station. Only one parameter may be plotted at a time. This parameter may be a level parameter defined in SNPARM or a stability index defined in STNDEX. If both SNPARM and STNDEX have values, SNPARM will be used. If a level parameter is defined in SNPARM, a vertical level must also be set in LEVELS. The type of y axis can be set in PTYPE. Either LIN or LOG is valid. The limits on the y axis can be set in YAXIS. The times to plot are specified in DATTIM. Only those times specified will be plotted. Lines will be drawn connecting the data points, provided that no more than two points are missing between segments. The time axis is specified in TAXIS using the usual GEMPAK date/time conventions, including FIRST and LAST. If TAXIS has no increment, a reasonable value is chosen. If TAXIS is blank, the limits are taken from the first and last valid times set in DATTIM. When the user desires multiple lines on the same graph, TAXIS and YAXIS should be explicitly set. Then LINE, MARKER, and TITLE can be varied for successive combinations of LEVELS, VCOORD, AREA, and SNPARM. The height-to-width ratio of the plot may be specified in PTYPE following a slash. If no value is entered, a value of 0.5 will be used. EXAMPLES 1. Plot the temperature in Celsius at the 500-mb level over BWI for the times between 26/12 and 31/00 in the file. Use the default line, marker, title and background colors. Label the Y axis from -40 degrees to 0 degrees in increments of 10 degrees. Label the T axis from 26/00 to 31/12 with internally chosen increments. SNFILE = realtime.snd DATTIM = 26/12-31/00 TAXIS = 26/00-31/12 LEVELS = 500 VCOORD = pres SNPARM = tmpc STNDEX = AREA = @bwi PTYPE = /.5 YAXIS = -40/0/10 BORDER = 1 LINE = 2/1/1 MARKER = 1 TITLE = 5 CLEAR = yes PANEL = 0 DEVICE = vt 2. Now, using the same file, plot a time series of the lifted index at OKC for all times in the file. Plot the line with a thick, short dash pattern and use internal scaling for both axes. DATTIM = all TAXIS = SNPARM = STNDEX = lift AREA = @okc YAXIS = LINE = 2/2/3 ERROR MESSAGES [SNTSER +2] WARNING, invalid PTYPE, LIN will be used. [SNTSER +1] WARNING, more than one parameter specified. [SNTSER -1] Fatal error initializing TAE. [SNTSER -2] Fatal error reading TAE parameters. [SNTSER -3] Fatal error initializing GEMPLT. [SNTSER -4] Input for LEVEL is invalid. [SNTSER -5] Error defining graph coordinates. [SNTSER -6] No points found for plot. [SNTSER -7] Session not interactive. [SNTSER -8] No parameters entered. [SNTSER -9] Parm ... not calculable. [SNTSER -10] Parm ... is a character. [SNTSER -11] PTYPE chosen is invalid.