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

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