Re: How to Replace default Y-axis labels and tickmarks ?

It helped a little to not set tmLabelAutoStride, in that a core file
was no longer produced.

However, a persistent problem is that I need to find a way to insert
different values on the axis from the strict range within the data. I
want to convert the numbers on the axis from days to years, and make
these values start at zero relative to a given date. So the numbers
which come out of the data are not the numbers I would like to be
displayed on the Y-axis, which I would like to customize to be more
intelligible. Does anyone know how to do this ?.

I am trying to plot the variable tdiff, as shown in the script below,
and defined at the bottom of the page. I want to plot tdiff as a
function of time and longitude in a Hovmuller type plot. So I want to
plot values on the y-axis that are derived from the time values, but
which are different from those time values themselves. Right now, I
can either get those original time values on the y-axis, or no numbers
at all on the y-axis, but I cannot enter the values I want to put on
the y-axis.

Does anyone know how I can do this ?.

Thanks,
Helen.

On Sep 4, 2013, at 8:04 AM, Mary Haley wrote:

> Helen,
>
> It looks like you are setting the tickmark resources correctly.
>
> Are you getting any kind of warning or error at all?
>
> You have to be sure that the values you use for tmYLValues
> correspond with the range of the Y aixs.
>
> Also, don't set tmLabelAutoStride when you are in "explicit" mode.
>
> See attached example and data file.
>
> --Mary
>
>
>
> On Sep 4, 2013, at 5:06 AM, Helen Parish wrote:
>
> > I am trying to modify the Y-axis label and tickmarks from the
> default
> > for a Hovmuller style plot, but cannot find a way to get it to
> replace
> > the default label and tickmarks with my chosen explicit values. I
> can
> > either eliminate the Y label and tick marks completely, or have both
> > labels appear together. Also, if tick marks are not completely
> > eliminated, both sets of tickmarks are present and the core is
> dumped.
> > I have tried using both gsn_csm_hov and gsn_csm_contour, but the
> > default Y-axis values seem to be forced in both cases.
> >
> > Does anyone know how I can replace the default Y-axis label and
> > tickmarks ?.
> >
> > I enclose the part of the script which creates the plot below, and
> > below that I enclose summaries of the variables which are used.
> >
> > Thanks,
> > Helen.
> >
> >
> >
> > ;***********************
> > ; Create Plot
> > ;***********************
> >
> > res = True
> >
> > res@gsnLeftString = ""
> > res@gsnCenterString = "Hovmuller Plot T-Ttime-mean"
> > res@gsnRightString = ""
> >
> > res@cnFillOn = True
> > res@lbLabelAutoStride = True
> > res@gsnMaximize = True ; if [ps, eps, pdf] make large
> > res@gsnSpreadColors = True ; span color map
> > res@cnLineLabelsOn = False ; Turn off contour line labels
> > res@cnInfoLabelOn = False ; Turn off informational label
> >
> > time3 = time2
> > time3 = (time2-36155.0)/365.0
> > timlabel = time3
> >
> > timlabel(0) = time3(0)
> > timlabel(1) = time3(10)
> > timlabel(2) = time3(20)
> > timlabel(3) = time3(30)
> > timlabel(4) = time3(40)
> > timlabel(5) = time3(51)
> >
> > labsy = (/"0.0","10.0","20.0","30.0","40.0","50.0"/)
> > res@tmYLMode = "Explicit" ; explicit labels
> > res@tmYLValues = timlabel(0:5) ; location of
> labels
> > res@tmYLLabels = labsy ; labels
> themselves
> > res@tmLabelAutoStride = True ; nice stride on
> > labels
> >
> > res@tmXBMode = "Manual"
> > res@tmXBTickStartF = 0
> > res@tmXBTickEndF = 50
> > res@tmXBTickSpacingF= 5
> >
> > res@tiXAxisString = "Longitude (degrees)"
> > res@tiYAxisString = "Time (years from year 100)"
> >
> > res@pmTitleZone = 3
> > res@pmLabelBarOrthogonalPosF = 0.05
> >
> > res@lbTitleOn = True
> > res@lbTitleDirection = "Across" ; title
> direction
> > res@lbTitlePosition = "Right"
> > res@lbTitleString = "(K)"
> > res@lbTitleFontHeightF = 0.02
> > res@lbTitleOffsetF = 0.0
> >
> > plot = gsn_csm_contour(wks, tdiff(:,19,95,:), res ) ;
> > (time,lon)
> >
> > end
> >
> >
> >
> > Variable: tdiff
> > Type: float
> > Total Size: 575078400 bytes
> > 143769600 values
> > Number of Dimensions: 4
> > Dimensions and sizes: [time | 52] x [lev | 50] x [lat | 192] x
> [lon |
> > 288]
> > Coordinates:
> > time: [36166.66666666666..54833.33333333334]
> > lev: [0.03554912016..91942.93428213599]
> > lat: [ -90.. 90]
> > lon: [ 0..358.75]
> > Number Of Attributes: 3
> > cell_methods : time: mean
> > long_name : Temperature
> > units : K
> >
> >
> > Variable: time2
> > Type: double
> > Total Size: 416 bytes
> > 52 values
> > Number of Dimensions: 1
> > Dimensions and sizes: [time | 52]
> > Coordinates:
> > time: [36166.66666666666..54833.33333333334]
> > Number Of Attributes: 4
> > long_name : time
> > units : days since 0001-01-01 00:00:00
> > calendar : noleap
> > bounds : time_bnds
> >
> >
> > Variable: time3
> > Type: double
> > Total Size: 416 bytes
> > 52 values
> > Number of Dimensions: 1
> > Dimensions and sizes: [time | 52]
> > Coordinates:
> > time: [36166.66666666666..54833.33333333334]
> > Number Of Attributes: 4
> > bounds : time_bnds
> > calendar : noleap
> > units : days since 0001-01-01 00:00:00
> > long_name : time
> >
> >
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>
> <hov.ncl><chi200_ud_smooth.nc>

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Received on Wed Sep 4 23:36:52 2013