[gradsusr] gradsusr Digest, Vol 80, Issue 20

Fri Oct 14 12:26:48 EDT 2016

Hi... how to install grads online(not by downloaded package)   in linux
ubuntu  tell its procedure step by step.

thank you

On 14 October 2016 at 09:00, <gradsusr-request at gradsusr.org> wrote:

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> Today's Topics:
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>    1. Re: How to output contour to a txt/dat file (leila amini)
>    2. NAM and APCPSFC data (Mark Sponsler)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 14 Oct 2016 19:17:09 +0430
> From: leila amini <labi475 at gmail.com>
> Subject: Re: [gradsusr] How to output contour to a txt/dat file
> To: GrADS Users Forum <gradsusr at gradsusr.org>
> Message-ID:
>         <CAChC=xQkro==00wK38JPwcC2xVbmAiBtQLd8Y+6hs6Zcfu3U5w at mail.
> gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> hi
> I need to change wrfout***.nc   to data file for exel
> can you help me
> thanks leila
>
> On Fri, Sep 16, 2016 at 1:04 AM, Jennifer M Adams <jadams21 at gmu.edu>
> wrote:
>
> > Hi, Mike ?
> > I?m glad you got what you need from the KML output. The lat/lon values
> for
> > the contour line vertices are buried in the shape file, but you have to
> use
> > ?shpdump? (a stand-alone utility that is built along with the shapfile
> > library) to print them out.
> > ?Jennifer
> >
> >
> > On Sep 15, 2016, at 4:19 PM, Mike Fiorino - NOAA Federal <
> > michael.fiorino at noaa.gov> wrote:
> >
> > hi again -- 'set gxout kml' does the trick:
> >
> > 'set gxout kml'
> > 'set kml -ln kmltest'
> > 'set clevs 0'
> > 'd temp'
> >
> > the file kmltest.kml has the lon/lat/z (0) for each contour in
> > <coordinates>
> > lon0,lat0,0 lon1,lat1,0 ...
> > lonN,latN,0
> > </coordinates>
> >
> > thanks /R Mike
> >
> > hi Jennifer -- I have a similar problem...  I can generate and display
> the
> > shp file and the 'q shp' works as advertised, but what I really need are
> > the actually lat(Y)/lon(X) of the vertices not just the bounds, e.g.,
> >
> > 37:  ArcM  parts=1  vertices=553  XBounds=0:360  YBounds=41.4058:74.4189
> > ZBounds=0:0  MBounds=5700:5700
> >
> > tells me there are 553 vertices and that the lon bound is 0-360 and lat
> > bound is 41.4-74.4.  do I have to use some GIS s/w to get the lat/lons?
> or
> > is there a way to mod grads to output?
> >
> > thanks!  best /R Mike
> >
> > On 9/7/16 10:37 AM, Jennifer M Adams wrote:
> >
> > GrADS can write out the shapefile for you. Use ?set gxout shp? and ?set
> > shp? to control the output. Documentation is at
> http://cola.gmu.edu/grads/
> > gadoc/shapefiles.html.
> >
> > ?set gxout shp'
> > ?set shp -line shptest'
> > ?set clevs 0?
> > ?d temp'
> >
> > ?Jennifer
> >
> >
> > On Sep 6, 2016, at 8:47 PM, Taixia <wutxcn at GMAIL.COM> wrote:
> >
> > Thanks for your reply. Exactly.  I'd like get a *.shp file of the 0
> > contour's. It should be get the lat/lon of the contour's position first,
> > and then using Arcgis software to generate the .shp file.
> >
> > On Wednesday, September 7, 2016, Jennifer M Adams <jadams21 at gmu.edu>
> > wrote:
> > > I guess I did not fully understand the question. You have drawn the
> > 0-degree temperature contour; what exactly do you want to output to a
> text
> > file? The lat/lon of the contour?s position? ?Jennifer
> > >
> > > On Sep 3, 2016, at 7:19 PM, Taixia <wutxcn at GMAIL.COM> wrote:
> > >
> > > Hi Jennifer,
> > > Thanks a lot for your reply.
> > > Problem still exists,forgive a Grads beginner. The data I used is the
> > NECP 5 years average air temperature, I'd like get the zero degree
> > temperature line. After "set clevs 0", I got the contours graphic (see
> > attachment). But I still cannot get the output file as your steps. Could
> > you please have a look at the attachments and help?
> > > ---Tim
> > > On Fri, Sep 2, 2016 at 7:20 PM, Jennifer M Adams <jadams21 at gmu.edu>
> > wrote:
> > >>
> > >> After drawing a plot, you can check the contour levels used with ?q
> > shades? or ?q contours?. For line contours, the output looks like this
> > (first column is color number, second column is contour value):
> > >> Number of levels = 11
> > >> 9 50000
> > >> 14 55000
> > >> 4 60000
> > >> 11 65000
> > >> 13 70000
> > >> 3 75000
> > >> 10 80000
> > >> 12 85000
> > >> 8 90000
> > >> 2 95000
> > >> 6 100000
> > >> If you want to write this to a file, here is a script fragment:
> > >> ?q contours?
> > >> rc=write(?contourinfo.txt?,result)
> > >> rc=close(?contourinfo.txt?)
> > >> ?Jennifer
> > >> On Sep 1, 2016, at 9:57 PM, Taixia <wutxcn at GMAIL.COM> wrote:
> > >>
> > >> Anybody knows how to output the contour value (such as set clevs 0) to
> > .txt or .dat file (not graphic)? Thanks.
> > >> _______________________________________________
> > >> gradsusr mailing list
> > >> gradsusr at gradsusr.org
> > >> http://gradsusr.org/mailman/listinfo/gradsusr
> > >>
> > >> --
> > >> Jennifer Miletta Adams
> > >> Center for Ocean-Land-Atmosphere Studies (COLA)
> > >> George Mason University
> > >>
> > >>
> > >>
> > >>
> > >> _______________________________________________
> > >> gradsusr mailing list
> > >> gradsusr at gradsusr.org
> > >> http://gradsusr.org/mailman/listinfo/gradsusr
> > >>
> > >
> > > <air1115.nc><snap.bmp>_______________________________________________
> > > gradsusr mailing list
> > > gradsusr at gradsusr.org
> > > http://gradsusr.org/mailman/listinfo/gradsusr
> > >
> > > --
> > > Jennifer Miletta Adams
> > > Center for Ocean-Land-Atmosphere Studies (COLA)
> > > George Mason University
> > >
> > >
> > > _______________________________________________
> > gradsusr mailing list
> > gradsusr at gradsusr.org
> > http://gradsusr.org/mailman/listinfo/gradsusr
> >
> >
> > --
> > Jennifer Miletta Adams
> > Center for Ocean-Land-Atmosphere Studies (COLA)
> > George Mason University
> >
> >
> >
> >
> >
> > _______________________________________________
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> listinfo/gradsusr
> >
> >
> > _______________________________________________
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> >
> >
> > --
> > Jennifer Miletta Adams
> > Center for Ocean-Land-Atmosphere Studies (COLA)
> > George Mason University
> >
> >
> >
> >
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> ------------------------------
>
> Message: 2
> Date: Fri, 14 Oct 2016 15:55:07 +0000 (UTC)
> From: Mark Sponsler <msponsler at comcast.net>
> Subject: [gradsusr] NAM and APCPSFC data
> To: GrADS Users Forum <gradsusr at gradsusr.org>
> Message-ID:
>         <1766806095.46364929.1476460507139.JavaMail.zimbra at comcast.net>
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>
> Hi,I'm trying to display variable 'apcpsfc' from the 3 hr and 1 hr NAM.
> The resulting images appear to pulsate/accumulate precip every few images
> then reset only to accumulate again.I've seen the threads in the archive on
> this issue with HD GFS data, but I'm trying to understand 2 things:1) What
> is the accumulation period for NAM 1 hr and 3 hr data.  I was thinking it
> was every 3 time steps (i.e. excluding time step 1 / 00 hr), it is 2, 3, 4
> then reset and start accumulating again for the next 3 time steps 5, 6 and
> 7).  But that doesnt seem to be the case. 2) What does it mean to
> 'normalize' the data? Westly did something in wgrib2 for HD GFS data to
> normalize it and I was wondering if that was also applicable to NAM data.
> What is done to mathmatically to get the data to be valid for just a single
> timestep?.  Can I write something in GRDADS to perform the normalization
> rather than having to use WGRIB2. Assuming the accumulation theory is
> correct (that apcpsfc accumulates e!
>  very three time steps), I've been trying to write code to remove the
> accumulation by:Display Time = 2Time 3 = Time 3 - Time 2Display Time 3Time
> 4 = Time 4 - Time 3Display Time 4But it doesnt work. Any help would be
> appreciated.Thanks,Mark
>
>
> Thanks,Mark
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> End of gradsusr Digest, Vol 80, Issue 20
> ****************************************
>

-- 
*Narendra  Sharma*
*(M.Sc.(Mathematics) )(B.H.U.) ,*
*Research Scholar in IESD B.H.U.*
* varanasi*
*+91-8574486661*
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