Re: time labels from netcdf file

From: Sylvia Murphy (murphys AT XXXXXX)
Date: Fri Nov 21 2003 - 15:20:40 MST

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    Hi Andres,
    there are several places on my site that demonstrate explicit tick mark
    labeling. I'll point you to one:
    http://www.cgd.ucar.edu/csm/support/CSM_Graphics/xy.shtml
    see example 6

    the one gotcha, is that the "values" must be somthing that the plot
    already understands. for instance, if your axis is simply a linear
    progression (0...N) etc, then you need to specify that you want a label
    at 4,8,16,etc or whatever specific value you desire.

    let me know if you have difficulties implimenting it.

    cheers,

    sylvia

    On Fri, 21 Nov 2003, Andres Roubicek wrote:

    > I am trying to plot a hovmoeller plot by reading a netcdf daily datafile
    > and would like to have the time axis labelled with dates like "20031120"
    > or something like that.
    >
    > I could not find specific information online, I would appreciate help or
    > directions to online instructions. below I include a test script.
    >
    > Thank you,
    > Andres
    >
    >
    > ------------------------------------------------------------------
    > 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"
    >
    > begin
    >
    > a = addfile("/Datasets/ncep/hgt.2003.nc","r")
    > x = a->hgt(:,{850},{60},:)
    >
    > wks = gsn_open_wks ("ps", "test" ) ; open ps file
    > gsn_define_colormap(wks,"BlWhRe") ; choose colormap
    >
    > res = True ; plot mods desired
    > res@cnFillOn = True ; turn on color fill
    > res@gsnSpreadColors = True ; use full range
    > of colors
    >
    > res@trYReverse = True ; reverse y axis
    >
    > res@lbLabelAngleF = 45 ; angle labels
    >
    > plot = gsn_csm_hov(wks, x(:,{0:360}), res)
    >
    > end
    > -------------------------------------------------------------------
    >
    > _______________________________________________
    > ncl-talk mailing list
    > ncl-talk@ucar.edu
    > http://mailman.ucar.edu/mailman/listinfo/ncl-talk
    >

    ******************************************************
    Sylvia Murphy EML: murphys@ucar.edu
    NCAR CGD/CAS PHN: 303-497-1720
    3080 Center Green Drive FAX: 303-497-1333
    Boulder CO 80301

    WEB: http://www.cgd.ucar.edu/csm/support/
         http://www.cgd.ucar.edu/csm/support/CSM_Graphics/
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