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[GEMPAK #PGI-541511]: GPANOT on a cross section?

Brian,

I'll look at this using some of the acars observations that
I have. I do convert those from NetCDF to GEMPAK.

Steve Chiswell
Unidata User SUpport



> Hi Steve,
> 
> Thanks for the help with the margins!
> 
> No, I have not converted the flight observations to GEMPAK
> before, though it shouldn't be too hard if I have a sample
> surface file to use as a template.  The aircraft data have height
> values and (I believe) pressure values also.  I can get a sample
> of the data to you if you like.
> 
> Brian
> 
> On Apr 6, 2007, at 3:47 PM, Unidata GEMPAK Support wrote:
> 
> > Brian,
> >
> > It is possible to set the margins to zero in PTYPE, eg:
> > PTYPE    = log//0;0;0;0
> > In fact, setting common margins is necessary to do things such
> > as overlay the gdross output on level2 RHI plots from nexr2rhi.
> >
> > I was considering a modified version of gdcross to input a file that
> > would provide the track locations and plot those point locations.
> > Either as a surface format file where PRES or HGHT would be stored in
> > a variable, or an upperair format file.In the past I have used
> > a ship file for aircraft data to store the large numbers of in-situ
> > observations.
> >
> > You mentioned that your data was in NetCDF. Have you converted the
> > flight observations to GEMPAK values at any point in the past?
> >
> > Steve Chiswell
> > Unidata User Support
> >
> >
> >> Hi Steve,
> >>
> >> I have calculated the relative x;y screen locations for the cross
> >> section, and as a test, I used GPANOT to plot an "x" at location
> >> .5;.5 which should be the center of the plot.  The "x" does get
> >> plotted, but the location is relative to the edges of the window, and
> >> not the edges of the plotted data, thus title and line labels can
> >> affect the location of the "x" within the data area.  I am able to
> >> suppress nearly all the labels, except for the tick marks and the
> >> lat,lon endpoint text at the bottom corners of the cross section, but
> >> the plot still has some margin between the edge of the window and
> >> the data area.  Is there a way to force the data area to cover the
> >> entire window?
> >>
> >> Brian
> >>
> >> On Apr 4, 2007, at 4:10 PM, Unidata GEMPAK Support wrote:
> >>
> >>> Brian,
> >>>
> >>> The cross section plots are x/y "graph" mode plots and not
> >>> lat/lon "map" mode plots, so gpanot will not be able to convert
> >>> lat/lon into axis locations to overlay on gdcross output.
> >>>
> >>> You could calculate x/y screen locations based on cross section
> >>> relative locations (eg calculating a normalized 0,1 distance of
> >>> an aircraft lat/lon from the cross section cxstns location
> >>> and then plot those locations versus a scaled height, but can't be
> >>> done automatically at this time given the tools at hand.
> >>>
> >>> Are your aircraft locations in a GEMPAK surface data file?
> >>>
> >>> Steve Chiswell
> >>> Unidata User Support
> >>>
> >>>
> >>>> Hi Steve!
> >>>>
> >>>> I was wondering if there is a way to plot an annotation
> >>>> on a cross section.  I've used GDCROSS to create a
> >>>> cross section of model data, and would like to super-
> >>>> impose an aircraft track onto it.  I have lat, lon, alt for
> >>>> the aircraft data, and the cross section is height based.
> >>>>
> >>>> I thought of using GPANOT, but I'm not sure if it was
> >>>> designed to be used with cross sections.  The LOCI
> >>>> parameter allows for lat, lon but not alt.
> >>>>
> >>>> Do you know of a way to do this?
> >>>>
> >>>>
> >>>> Brian Jamison
> >>>>
> >>>>
> >>>>
> >>>>
> >>>
> >>>
> >>> Ticket Details
> >>> ===================
> >>> Ticket ID: PGI-541511
> >>> Department: Support GEMPAK
> >>> Priority: Normal
> >>> Status: Closed
> >>>
> >>
> >>
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: PGI-541511
> > Department: Support GEMPAK
> > Priority: Normal
> > Status: Closed
> >
> 
> 


Ticket Details
===================
Ticket ID: PGI-541511
Department: Support GEMPAK
Priority: Normal
Status: Closed