[ncl-talk] ncl-talk Digest, Vol 147, Issue 10
Benjamin Alabi
alabibenjamin2 at gmail.com
Tue Feb 9 05:34:53 MST 2016
Re: Data conversion
I want to use this medium to thank the forum and everyone that respond to
my challenge in converting from binary data to netcdf. May you find help in
time of need IJN, Amen.
I have finally gotten the solution by commenting the image part of the
script and gave me the netcdf form of the data.
Concern the addition of 75.0, I will like my helper to look unto the script
finally used if it has been implemented or not for correction sir.
; A script to convert binary data to netcdf
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/shea_util.ncl"
begin
file_name_read = "merg_2012090200_4km-pixel"
ir_u = byte2flt( fbindirread (file_name_read ,0, (/2,3298,9896/),"ubyte"))
+ 75.
lon_g = fspan(0.0182,360,9896)
lat_g = fspan(59.982,59.982-0.036383683*3298,3298)
lon_g at units = "degrees_east"
lon_g at long_name = "longitude"
lon_g at short_name = "longitude"
lon_g!0 = "lon"
lon_g&lon = lon_g
lat_g at units = "degrees_north"
lat_g at long_name = "latitude"
lat_g at short_name = "latitude"
lat_g!0 = "lat"
lat_g&lat = lat_g
ir_u!0 = "time"
ir_u!1 = "lat"
ir_u!2 = "lon"
ir_u&lat = lat_g
ir_u&lon = lon_g
ir_u at _FillValue= 255+75.
;wks = gsn_open_wks("X11","")
;res = True
;res at cnFillOn = True
;res at cnFillMode = "RasterFill"
;res at cnLinesOn = False
;plot = gsn_csm_contour_map(wks, ir_u(0,:,:), res)
ncout = addfile(file_name_read+".nc","c")
ncout->ir_data = ir_u
end
Waiting for your comment.
On Mon, Feb 8, 2016 at 8:00 PM, <ncl-talk-request at ucar.edu> wrote:
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> Today's Topics:
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> 1. Re: gsn_csm_vector_scalar_map (Mary Haley)
> 2. Re: ncl-talk Digest, Vol 147, Issue 8 (Benjamin Alabi)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 7 Feb 2016 16:02:07 -0700
> From: Mary Haley <haley at ucar.edu>
> Subject: Re: [ncl-talk] gsn_csm_vector_scalar_map
> To: Xi Chang <xi.chang01 at gmail.com>
> Cc: "ncl-talk at ucar.edu" <ncl-talk at ucar.edu>
> Message-ID:
> <CACNN_CJ0hGL=_
> n28qjNZza2AP+BemRwK-sRFFgThi+rcXVVwUw at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Xi,
>
> For an example of using gsn_csm_vector_scalar_map and changing the contour
> levels, please see example "lcnative_5.ncl" at:
>
> http://www.ncl.ucar.edu/Applications/lcnative.shtml#ex5
>
> You will need to add the following lines to the code:
>
> res at cnLevelSelectionMode = "ManualLevels"
> res at cnMinLevelValF = 270
> res at cnMaxLevelValF = 310
> res at cnLevelSpacingF = 2
>
> The data file can be downloaded from:
>
> http://www.ncl.ucar.edu/Applications/Data/#grb
>
> Note that this example also shows how to create this kind of plot using
> gsn_csm_contour_map and gsn_csm_vector. I sometimes recommend this method
> if you want more control over the individual vector and contour plots.
>
> --Mary
>
>
> On Fri, Feb 5, 2016 at 1:19 PM, Xi Chang <xi.chang01 at gmail.com> wrote:
>
> > Hi Karin,,
> >
> > I did, but it doesnt work for gsn_csm_vector_scalar_map, no idea why..
> >
> > Chang.
> >
> > On Fri, Feb 5, 2016 at 7:53 PM, Karin Meier-Fleischer <
> > meier-fleischer at dkrz.de> wrote:
> >
> >> Hi Xi,
> >>
> >> have you taken a look at the first example of the vector examples page
> >> http://ncl.ucar.edu/Applications/Scripts/vector_1.ncl
> >>
> >> When you want to control the minimum/maximum and interval of the contour
> >> lines use
> >>
> >> res at cnLevelSelectionMode = "ManualLevels" ; set manual contour
> levels
> >> res at cnMinLevelValF = 24.0 ; set min contour level
> >> res at cnMaxLevelValF = 29 ; set max contour level
> >> res at cnLevelSpacingF = 0.10 ; set contour spacing
> >>
> >> Bye,
> >> Karin
> >>
> >> Am 05.02.16 um 19:00 schrieb Xi Chang:
> >>
> >> Hello...
> >>
> >> Could you please tell me how to control the contour interval for color
> >> shading once im using this function *gsn_csm_vector_scalar_map*.
> >>
> >> ;===========PLOT=================
> >>
> >> wks = gsn_open_wks("png","overlay")
> >>
> >> res = True ; plot mods desired
> >> plot = new(16,graphic)
> >>
> >> res at gsnDraw = False ; don't draw
> >> res at gsnFrame = False ; don't advance frame
> >>
> >> ; vector rescoures
> >> res at vcRefLengthF = 0.045
> >> res at vcRefMagnitudeF = 20.0
> >> res at vcRefAnnoOrthogonalPosF = -0.12
> >> res at vcRefAnnoParallelPosF = 0.997
> >> res at vcRefAnnoFontHeightF = 0.015
> >> res at vcMinDistanceF = 0.03
> >> res at lbLabelBarOn = False
> >>
> >> res at mpProjection = "AzimuthalEquidistant" ; choose map projection
> >> res at mpLimitMode = "LatLon" ; use lat/lon coordinates to
> >> limit area
> >> res at mpMinLatF = 25.
> >> res at mpMaxLatF = 75.
> >> res at mpMinLonF = -80.
> >> res at mpMaxLonF = 20.
> >> res at gsnMaximize = True
> >>
> >>
> >>
> >>
> >>
> >> * res at gsnScalarContour = True res at cnFillOn =
> >> True res at cnFillPalette = "gui_default" ; set color map
> >> res at cnLinesOn = False ; turn off contour
> lines *
> >>
> >>
> >> do i=0,15
> >> plot(i) = gsn_csm_vector_scalar_map(wks,u(i,:,:),v(i,:,:), \
> >> p(i,:,:),res)
> >> end do
> >>
> >> resP = True ; modify the panel plot
> >> resP at gsnMaximize = True
> >> gsn_panel(wks,plot,(/4,4/),resP) ; now draw as one plot
> >>
> >>
> >> end
> >>
> >>
> >>
> >>
> >> _______________________________________________
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> >
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> Message: 2
> Date: Mon, 8 Feb 2016 12:03:22 +0100
> From: Benjamin Alabi <alabibenjamin2 at gmail.com>
> Subject: Re: [ncl-talk] ncl-talk Digest, Vol 147, Issue 8
> To: ncl-talk at ucar.edu
> Message-ID:
> <
> CADnXx_-kQj0SSFRctExs4WEQwy8f7ZunpFo4sktGwiNkYzt2WQ at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Goodday sir
> I think i've added 75 to ' ir_u at _FillValue= 255 '. pls check this script
> for any correction:
>
> ; A script to convert binary data to netcdf
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/shea_util.ncl"
>
> begin
> file_name_read = "merg_2012090102_4km-pixel"
>
> ir_u = byte2flt( fbindirread (file_name_read ,0, (/2,3298,9896/),"ubyte"))
> + 75.
>
>
> lon_g = fspan(0.0182,360,9896)
> lat_g = fspan(59.982,59.982-0.036383683*3298,3298)
>
> lon_g at units = "degrees_east"
> lon_g at long_name = "longitude"
> lon_g at short_name = "longitude"
> lon_g!0 = "lon"
> lon_g&lon = lon_g
>
> lat_g at units = "degrees_north"
> lat_g at long_name = "latitude"
> lat_g at short_name = "latitude"
> lat_g!0 = "lat"
> lat_g&lat = lat_g
>
>
> ir_u!0 = "time"
> ir_u!1 = "lat"
> ir_u!2 = "lon"
>
> ir_u&lat = lat_g
> ir_u&lon = lon_g
>
> ir_u at _FillValue= 255+75.
>
>
> wks = gsn_open_wks("X11","")
> res = True
> res at cnFillOn = True
> res at cnFillMode = "RasterFill"
> res at cnLinesOn = False
> plot = gsn_csm_contour_map(wks, ir_u(0,:,:), res)
>
> ncout = addfile(file_name_read+".nc","c")
> ncout->ir_data = ir_u
>
> end
>
>
> On Sat, Feb 6, 2016 at 8:00 PM, <ncl-talk-request at ucar.edu> wrote:
>
> > Send ncl-talk mailing list submissions to
> > ncl-talk at ucar.edu
> >
> > To subscribe or unsubscribe via the World Wide Web, visit
> > http://mailman.ucar.edu/mailman/listinfo/ncl-talk
> > or, via email, send a message with subject or body 'help' to
> > ncl-talk-request at ucar.edu
> >
> > You can reach the person managing the list at
> > ncl-talk-owner at ucar.edu
> >
> > When replying, please edit your Subject line so it is more specific
> > than "Re: Contents of ncl-talk digest..."
> >
> >
> > Today's Topics:
> >
> > 1. Re: Data conversion (Alan Brammer)
> > 2. Re: gsn_csm_vector_scalar_map (Xi Chang)
> > 3. Re: gsn_csm_vector_scalar_map (alesall)
> > 4. Re: read and write netcdf-4 compressed files (David Brown)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Fri, 5 Feb 2016 14:10:24 -0500
> > From: Alan Brammer <abrammer at albany.edu>
> > Subject: Re: [ncl-talk] Data conversion
> > To: Benjamin Alabi <alabibenjamin2 at gmail.com>
> > Cc: "ncl-talk at ucar.edu" <ncl-talk at ucar.edu>
> > Message-ID: <564569E1-65BD-4130-B4EA-872812D72277 at albany.edu>
> > Content-Type: text/plain; charset="utf-8"
> >
> > > And you don't want to try to add 75.0 to the fill value in the script.
> >
> > Just to respond to this and clarify, the missing value in the
> > documentation that was linked to is 330. (
> > http://www.cpc.ncep.noaa.gov/products/global_precip/html/README <
> > http://www.cpc.ncep.noaa.gov/products/global_precip/html/README> )
> >
> > When I put the example script together I first posted, I just saw what
> was
> > obviously a missing value at 255, having forgotten the offset. 255 is a
> > very reasonable value in the world of brightness temps, so apologies for
> > that, in my haste I made a mistake there in the first script.
> >
> > So the real _FillValue should be 330 (i.e. 255+75 )
> >
> >
> >
> >
> > > On 5 Feb 2016, at 09:15, HAVENER, KEVIN F GS-12 USAF ACC 14 WS/WXED <
> > kevin.havener at us.af.mil> wrote:
> > >
> > > And you don't want to try to add 75.0 to the fill value in the script.
> > >
> > > Kevin Havener
> > >
> > > -----Original Message-----
> > > From: ncl-talk-bounces at ucar.edu [mailto:ncl-talk-bounces at ucar.edu] On
> > Behalf Of alesall
> > > Sent: Friday, February 05, 2016 9:03 AM
> > > To: Benjamin Alabi
> > > Cc: ncl-talk at ucar.edu
> > > Subject: Re: [ncl-talk] Data conversion
> > >
> > >
> > > the error message is:
> > >
> > > fatal:Undefined identifier: (byte2flt) is undefined, can't continue
> > >
> > > it is not finding the function ?byte2flt"
> > > on the documentation page, this one: <
> > http://ncl.ucar.edu/Document/Functions/Contributed/byte2flt.shtml>
> > > it says that such function is in the ?contributed? file.
> > >
> > > you need to add statements such as:
> > > load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl <
> > http://ncl.ucar.edu/Document/Functions/Contributed/contrib.shtml> "
> > > at the beginning of your script, actually before the ?begin?
> > >
> > > I have all of these in my scripts:
> > >
> > > load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
> > > load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
> > > load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/shea_util.ncl"
> > > load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
> > >
> > > hope this helps!
> > >
> > >
> > >
> > > --
> > > Alessandra Giannini
> > > IRI for Climate and Society - The Earth Institute at Columbia
> University
> > P.O. Box 1000, Palisades NY 10964-8000
> > > phone/fax: +1 845 680-4473/4864 - email: alesall at iri.columbia.edu
> > >
> > >
> > > On Feb 5, 2016, at 8:57 AM, Benjamin Alabi <
> > alabibenjamin2 at gmail.com> wrote:
> > >
> > > Goodday sir,
> > >
> > > I appreciate your effort in guiding me. I'm new in this platform,
> > please dont be offended by sending the message three times, I'm just
> > learning to get help from here.
> > >
> > > I used the script,
> > > begin
> > > file_name_read = "merg_2012090101_4km-pixel"
> > >
> > > ir_u = byte2flt( fbindirread (file_name_read ,0,
> > (/2,3298,9896/),"ubyte")) +75.0
> > >
> > >
> > > lon_g = fspan(0.0182,360,9896)
> > > lat_g = fspan(59.982,59.982-0.036383683*3298,3298)
> > >
> > > lon_g at units = "degrees_east"
> > > lon_g at long_name = "longitude"
> > > lon_g at short_name = "longitude"
> > > lon_g!0 = "lon"
> > > lon_g&lon = lon_g
> > >
> > > lat_g at units = "degrees_north"
> > > lat_g at long_name = "latitude"
> > > lat_g at short_name = "latitude"
> > > lat_g!0 = "lat"
> > > lat_g&lat = lat_g
> > >
> > >
> > > ir_u!0 = "time"
> > > ir_u!1 = "lat"
> > > ir_u!2 = "lon"
> > >
> > > ir_u&lat = lat_g
> > > ir_u&lon = lon_g
> > >
> > > ir_u at _FillValue= 255+75.0
> > >
> > >
> > > wks = gsn_open_wks("X11","")
> > > res = True
> > > res at cnFillOn = True
> > > res at cnFillMode = "RasterFill"
> > > res at cnLinesOn = False
> > > plot = gsn_csm_contour_map(wks, ir_u(0,:,:), res)
> > >
> > > ncout = addfile(file_name_read+".nc","c")
> > > ncout->ir_data = ir_u
> > >
> > > end
> > >
> > >
> > > But it was generating this error:
> > > fatal:Undefined identifier: (byte2flt) is undefined, can't
> continue
> > > fatal:["Execute.c":7741]:Execute: Error occurred at or near line
> 41
> > >
> > >
> > > Waiting for guide, Thanks.
> > >
> > >
> > >
> > > On Thu, Feb 4, 2016 at 8:07 PM, Alan Brammer <
> abrammer at albany.edu>
> > wrote:
> > >
> > >
> > > Forgot the offset, which is mentioned in the link Kevin
> > sent.
> > >
> > >
> > > ir_u = byte2flt( fbindirread (file_name_read ,0,
> > (/2,3298,9896/),"ubyte")) +75.
> > > ir_u at _FillValue= 255+75.
> > >
> > > "Each record is a 9896 x 3298 Fortran array of IR
> > brightness temperatures that have been scaled to fit into 1-byte by
> > subtracting "75" from each datum. Therefore it is necessary for the user
> to
> > add a value of "75" to each data value when using the data."
> > >
> > >
> > >
> > > On 4 Feb 2016, at 13:30, Alan Brammer <
> > abrammer at albany.edu> wrote:
> > >
> > > ok, wow. Don?t send the same message 3 times, if
> > the first answers weren?t complete at least expand and attempt something
> > not just copy paste the same lines again.
> > >
> > > as said before .Z means it?s compressed. gunzip
> > merg_2016020123_4km-pixel.Z will uncompress it. Then you have a binary
> > file as a small amount of googling would have told you.
> > > The same search would have linked you to various
> > messages on here and various scripts where other people have included
> > simple examples of this file type (myself included). Here is an example
> of
> > reading and making a simple plot. There are plenty of examples on how to
> > write netcdf on the NCL website so you should develop code from there.
> > Most simple example at bottom of script below.
> > >
> > https://www.ncl.ucar.edu/Applications/o-netcdf.shtml
> > >
> > > Read the documentation on the below functions and
> > understand what is occurring .
> > >
> > >
> > > begin
> > > file_name_read = "merg_2016020123_4km-pixel"
> > >
> > > ir_u = byte2flt( fbindirread (file_name_read ,0,
> > (/2,3298,9896/),"ubyte"))
> > >
> > >
> > > lon_g = fspan(0.0182,360,9896)
> > > lat_g =
> fspan(59.982,59.982-0.036383683*3298,3298)
> > >
> > > lon_g at units = "degrees_east"
> > > lon_g at long_name = "longitude"
> > > lon_g at short_name = "longitude"
> > > lon_g!0 = "lon"
> > > lon_g&lon = lon_g
> > >
> > > lat_g at units = "degrees_north"
> > > lat_g at long_name = "latitude"
> > > lat_g at short_name = "latitude"
> > > lat_g!0 = "lat"
> > > lat_g&lat = lat_g
> > >
> > >
> > > ir_u!0 = "time"
> > > ir_u!1 = "lat"
> > > ir_u!2 = "lon"
> > >
> > > ir_u&lat = lat_g
> > > ir_u&lon = lon_g
> > >
> > > ir_u at _FillValue= 255
> > >
> > >
> > > wks = gsn_open_wks("X11","")
> > > res = True
> > > res at cnFillOn = True
> > > res at cnFillMode = "RasterFill"
> > > res at cnLinesOn = False
> > > plot = gsn_csm_contour_map(wks, ir_u(0,:,:), res)
> > >
> > > ncout = addfile(file_name_read+?.nc?,?c?)
> > > ncout->ir_data = ir_u
> > >
> > > end
> > >
> > >
> > >
> > >
> > >
> > >
> > > On 4 Feb 2016, at 13:04, Benjamin Alabi <
> > alabibenjamin2 at gmail.com> wrote:
> > >
> > > Thanks for your assistance sir. I've
> tried
> > the cdo to get general information on the data, but it didn't work
> > > I need help from someone that can guide
> me
> > to convert this data format - 'merg_2012091000_4km-pixel.Z' to netcdf
> > format.
> > > I download Gobally-merged (60N-60S)
> > pixel-resolution IR brightness temperature data (equivalent blackbody
> > temps), merged from all available geostationary satellites (GOES-8/10,
> > METEOSAT-7/5)
> > > This is the link:
> > >
> >
> http://mirador.gsfc.nasa.gov/cgi-bin/mirador/presentNavigation.pl?tree=project&dataset=Global-merged%20IR%20Brightness%20Temperature%20Data&project=TRMM&dataGroup=Ancillary&version=001&CGISESSID=25c6337b80163b3743e8bea85d015558
> > .
> > >
> > > I really want it to be in netcdf format.
> > >
> > >
> > > Regard
> > >
> > >
> > >
> > >
> > >
> > _______________________________________________
> > > ncl-talk mailing list
> > > ncl-talk at ucar.edu
> > > List instructions, subscriber options,
> > unsubscribe:
> > >
> > http://mailman.ucar.edu/mailman/listinfo/ncl-talk
> > >
> > >
> > >
> > >
> > >
> > > _______________________________________________
> > > ncl-talk mailing list
> > > ncl-talk at ucar.edu
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> > >
> > >
> > >
> > > _______________________________________________
> > > ncl-talk mailing list
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> > ------------------------------
> >
> > Message: 2
> > Date: Fri, 5 Feb 2016 21:19:10 +0100
> > From: Xi Chang <xi.chang01 at gmail.com>
> > Subject: Re: [ncl-talk] gsn_csm_vector_scalar_map
> > To: Karin Meier-Fleischer <meier-fleischer at dkrz.de>
> > Cc: "ncl-talk at ucar.edu" <ncl-talk at ucar.edu>
> > Message-ID:
> > <CAGfRhteOJRK4=Rvrnoua8a+JDA2HQwfe8Q2jMhN=
> > cmtmrj7gVg at mail.gmail.com>
> > Content-Type: text/plain; charset="utf-8"
> >
> > Hi Karin,,
> >
> > I did, but it doesnt work for gsn_csm_vector_scalar_map, no idea why..
> >
> > Chang.
> >
> > On Fri, Feb 5, 2016 at 7:53 PM, Karin Meier-Fleischer <
> > meier-fleischer at dkrz.de> wrote:
> >
> > > Hi Xi,
> > >
> > > have you taken a look at the first example of the vector examples page
> > > http://ncl.ucar.edu/Applications/Scripts/vector_1.ncl
> > >
> > > When you want to control the minimum/maximum and interval of the
> contour
> > > lines use
> > >
> > > res at cnLevelSelectionMode = "ManualLevels" ; set manual contour
> > levels
> > > res at cnMinLevelValF = 24.0 ; set min contour
> level
> > > res at cnMaxLevelValF = 29 ; set max contour
> level
> > > res at cnLevelSpacingF = 0.10 ; set contour spacing
> > >
> > > Bye,
> > > Karin
> > >
> > > Am 05.02.16 um 19:00 schrieb Xi Chang:
> > >
> > > Hello...
> > >
> > > Could you please tell me how to control the contour interval for color
> > > shading once im using this function *gsn_csm_vector_scalar_map*.
> > >
> > > ;===========PLOT=================
> > >
> > > wks = gsn_open_wks("png","overlay")
> > >
> > > res = True ; plot mods desired
> > > plot = new(16,graphic)
> > >
> > > res at gsnDraw = False ; don't draw
> > > res at gsnFrame = False ; don't advance frame
> > >
> > > ; vector rescoures
> > > res at vcRefLengthF = 0.045
> > > res at vcRefMagnitudeF = 20.0
> > > res at vcRefAnnoOrthogonalPosF = -0.12
> > > res at vcRefAnnoParallelPosF = 0.997
> > > res at vcRefAnnoFontHeightF = 0.015
> > > res at vcMinDistanceF = 0.03
> > > res at lbLabelBarOn = False
> > >
> > > res at mpProjection = "AzimuthalEquidistant" ; choose map projection
> > > res at mpLimitMode = "LatLon" ; use lat/lon coordinates to
> > > limit area
> > > res at mpMinLatF = 25.
> > > res at mpMaxLatF = 75.
> > > res at mpMinLonF = -80.
> > > res at mpMaxLonF = 20.
> > > res at gsnMaximize = True
> > >
> > >
> > >
> > >
> > >
> > > * res at gsnScalarContour = True res at cnFillOn =
> > True
> > > res at cnFillPalette = "gui_default" ; set color map
> > > res at cnLinesOn = False ; turn off contour
> > lines *
> > >
> > >
> > > do i=0,15
> > > plot(i) = gsn_csm_vector_scalar_map(wks,u(i,:,:),v(i,:,:), \
> > > p(i,:,:),res)
> > > end do
> > >
> > > resP = True ; modify the panel
> plot
> > > resP at gsnMaximize = True
> > > gsn_panel(wks,plot,(/4,4/),resP) ; now draw as one plot
> > >
> > >
> > > end
> > >
> > >
> > >
> > >
> > > _______________________________________________
> > > ncl-talk mailing listncl-talk at ucar.edu
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> > http://mailman.ucar.edu/mailman/listinfo/ncl-talk
> > >
> > >
> > >
> > > _______________________________________________
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> >
> > ------------------------------
> >
> > Message: 3
> > Date: Fri, 5 Feb 2016 15:21:44 -0500
> > From: alesall <alesall at iri.columbia.edu>
> > Subject: Re: [ncl-talk] gsn_csm_vector_scalar_map
> > To: Xi Chang <xi.chang01 at gmail.com>
> > Cc: "ncl-talk at ucar.edu" <ncl-talk at ucar.edu>
> > Message-ID: <257ABA37-BFD7-49C5-B6CB-193B6F81F39F at iri.columbia.edu>
> > Content-Type: text/plain; charset="us-ascii"
> >
> > Hi, is it complaining that the spacing is too fine compared to the wide
> > range between min and max values, and reverting to doing what it thinks
> > best?
> >
> >
> >
> > --
> > Alessandra Giannini
> > IRI for Climate and Society - The Earth Institute at Columbia University
> > P.O. Box 1000, Palisades NY 10964-8000
> > phone/fax: +1 845 680-4473/4864 - email: alesall at iri.columbia.edu
> <mailto:
> > alesall at iri.columbia.edu>
> > > On Feb 5, 2016, at 3:19 PM, Xi Chang <xi.chang01 at gmail.com> wrote:
> > >
> > > Hi Karin,,
> > >
> > > I did, but it doesnt work for gsn_csm_vector_scalar_map, no idea why..
> > >
> > > Chang.
> > >
> > > On Fri, Feb 5, 2016 at 7:53 PM, Karin Meier-Fleischer <
> > meier-fleischer at dkrz.de <mailto:meier-fleischer at dkrz.de>> wrote:
> > > Hi Xi,
> > >
> > > have you taken a look at the first example of the vector examples page
> > > http://ncl.ucar.edu/Applications/Scripts/vector_1.ncl <
> > http://ncl.ucar.edu/Applications/Scripts/vector_1.ncl>
> > >
> > > When you want to control the minimum/maximum and interval of the
> contour
> > lines use
> > > res at cnLevelSelectionMode = "ManualLevels" ; set manual contour
> > levels
> > > res at cnMinLevelValF = 24.0 ; set min contour
> level
> > > res at cnMaxLevelValF = 29 ; set max contour
> level
> > > res at cnLevelSpacingF = 0.10 ; set contour spacing
> > > Bye,
> > > Karin
> > >
> > > Am 05.02.16 um 19:00 schrieb Xi Chang:
> > >> Hello...
> > >>
> > >> Could you please tell me how to control the contour interval for color
> > shading once im using this function gsn_csm_vector_scalar_map.
> > >>
> > >> ;===========PLOT=================
> > >>
> > >> wks = gsn_open_wks("png","overlay")
> > >>
> > >> res = True ; plot mods desired
> > >> plot = new(16,graphic)
> > >>
> > >> res at gsnDraw = False ; don't draw
> > >> res at gsnFrame = False ; don't advance frame
> > >>
> > >> ; vector rescoures
> > >> res at vcRefLengthF = 0.045
> > >> res at vcRefMagnitudeF = 20.0
> > >> res at vcRefAnnoOrthogonalPosF = -0.12
> > >> res at vcRefAnnoParallelPosF = 0.997
> > >> res at vcRefAnnoFontHeightF = 0.015
> > >> res at vcMinDistanceF = 0.03
> > >> res at lbLabelBarOn = False
> > >>
> > >> res at mpProjection = "AzimuthalEquidistant" ; choose map
> projection
> > >> res at mpLimitMode = "LatLon" ; use lat/lon coordinates to
> > limit area
> > >> res at mpMinLatF = 25.
> > >> res at mpMaxLatF = 75.
> > >> res at mpMinLonF = -80.
> > >> res at mpMaxLonF = 20.
> > >> res at gsnMaximize = True
> > >>
> > >> res at gsnScalarContour = True
> > >> res at cnFillOn = True
> > >> res at cnFillPalette = "gui_default" ; set color map
> > >> res at cnLinesOn = False ; turn off contour
> > lines
> > >>
> > >>
> > >>
> > >> do i=0,15
> > >> plot(i) = gsn_csm_vector_scalar_map(wks,u(i,:,:),v(i,:,:), \
> > >> p(i,:,:),res)
> > >> end do
> > >>
> > >> resP = True ; modify the panel
> plot
> > >> resP at gsnMaximize = True
> > >> gsn_panel(wks,plot,(/4,4/),resP) ; now draw as one
> plot
> > >>
> > >>
> > >> end
> > >>
> > >>
> > >>
> > >>
> > >> _______________________________________________
> > >> ncl-talk mailing list
> > >> ncl-talk at ucar.edu <mailto:ncl-talk at ucar.edu>
> > >> List instructions, subscriber options, unsubscribe:
> > >> http://mailman.ucar.edu/mailman/listinfo/ncl-talk <
> > http://mailman.ucar.edu/mailman/listinfo/ncl-talk>
> > >
> > >
> > > _______________________________________________
> > > ncl-talk mailing list
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> > http://mailman.ucar.edu/mailman/listinfo/ncl-talk>
> > >
> > >
> > > _______________________________________________
> > > ncl-talk mailing list
> > > ncl-talk at ucar.edu
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> > ------------------------------
> >
> > Message: 4
> > Date: Fri, 5 Feb 2016 14:37:26 -0700
> > From: David Brown <dbrown at ucar.edu>
> > Subject: Re: [ncl-talk] read and write netcdf-4 compressed files
> > To: Dan Chen <dchen at ucar.edu>, ncl-talk <ncl-talk at ucar.edu>
> > Message-ID:
> > <
> > CAC92F7fDd6iTx4N401jbbN-G6ieUzzgFEuW5TG9QhMHLaRvx3A at mail.gmail.com>
> > Content-Type: text/plain; charset=UTF-8
> >
> > Hi Dan,
> > The problem is a dimension mismatch. I am not sure why it does not get
> > reported as such, but here is the issue:
> > Your call to wrf_user_getvar asks for time step 0, granted the only
> > time step since the Time dimension has only 1 element. But the result
> > is that the return variable 'bb' is reduced from 4 dimensions (t,
> > z,y,x) in the file variable to 3 (z,y,x) in the local variable.
> >
> > Then you are trying to assign this 3d variable to a 4d variable in the
> > file. This causes the error.
> > There are two ways to fix it.
> > 1) Substitute -1 for 0 in the 3rd argument to wrf_user_getvar. You
> > will then get Time as the leftmost dimension of a 4d variable, and the
> > write can proceed without error.
> > 2) Or leave the wrf_user_getvar call alone. You can write the 3d local
> > variable into the 4d file variable by subscripting the left hand side
> > of the assignment:
> >
> > in->PM2_5_DRY(0,:,:,:) = (/bb/)
> >
> > We will look into why this is not caught earlier with a more apropos
> > "dimension mismatch" error to avoid the trip into the NetCDF library
> > code and the resulting low-level error messages.
> > -dave
> >
> >
> > On Thu, Feb 4, 2016 at 8:16 PM, Dan Chen <dchen at ucar.edu> wrote:
> > > Hi,
> > >
> > > My name is Dan Chen working at MMM, NCAR. I'm using ncl to read a
> > variable
> > > and write into the netcdf-4 compressed file on Yellowstone, but failed.
> > >
> > > The script is as blow:
> > > ========================================
> > > load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
> > > load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
> > > load "$NCARG_ROOT//lib/ncarg/nclscripts/wrf/WRFUserARW.ncl"
> > > load "$NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRF_contributed.ncl"
> > >
> > > begin
> > >
> > > fils = "/glade/scratch/dchen/ncl_netcdf4/analysis.ensmean"
> > > in = addfile(fils,"w")
> > > bb = wrf_user_getvar(in,"PM2_5_DRY",0)
> > > bb = bb*10
> > > fils->PM2_5_DRY = (/bb/)
> > >
> > > end
> > > ==========================================
> > >
> > >
> > > The error is as below
> > > =========================
> > > Copyright (C) 1995-2015 - All Rights Reserved
> > > University Corporation for Atmospheric Research
> > > NCAR Command Language Version 6.3.0
> > > The use of this software is governed by a License Agreement.
> > > See http://www.ncl.ucar.edu/ for more details.
> > > fatal:["NclNetCDF4.c":3073]:NclNetCDF4.c: Error in nc_def_var_chunking
> in
> > > file (/glade/scratch/dchen/ncl_netcdf4/analysis.ensmean) for writing,
> at
> > > line: 3073
> > >
> > > line 3074 of NclNetCDF4.c: NetCDF: Attempt to define var properties,
> like
> > > deflate, after enddef.
> > > ============================
> > >
> > >
> > > If I change the input file to a normal netcdf file without the
> > compression
> > > option, it works fine. But I do need to process those netcdf-4
> compressed
> > > files. Can you let me know if there is anything I can try?
> > >
> > > Many thanks,
> > > Dan
> > >
> > >
> > >
> > >
> > >
> > >
> > > _______________________________________________
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> > >
> >
> >
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> >
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> >
> > End of ncl-talk Digest, Vol 147, Issue 8
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