[ncl-talk] Contour plots Overlay

[MELISSA KAZEMI RAD]

Hi Adam,

Thank you for the comment. However, what I want to do is draw the base plot
such that it only occupies the lower half of the plot space, and for
gsn_csm_contour to overwrite the vertical axis labels regardless of the
vertical levels of the base plot, and that is a different effect. Your data
extends further beyond the point where the filled contour plot stops. But I
have two datasets with different number of vertical levels and different
ranges of values.

Melissa

On Fri, Nov 1, 2019 at 1:48 PM Adam Phillips <asphilli at ucar.edu> wrote:

> Hi Melissa,
> I think all you need to do is to set trYMinF appropriately. I modified
> Pressure vs Time example #3 to replicate what you are doing:
> http://www.ncl.ucar.edu/Applications/height_time.shtml#ex3
>
> Setting trYMinF results in a warning but everything looks good. I've
> attached the modified script and the resulting plot.
> Adam
>
> On Fri, Nov 1, 2019 at 10:21 AM MELISSA KAZEMI RAD via ncl-talk <
> ncl-talk at ucar.edu> wrote:
>
>> Hi,
>>
>> I have an urgent problem. I have two 2D datasets with dimensions height
>> and time. However, they differ in their height dimension size; one has 26
>> vertical levels that ranges from 0 to 1500 m, the other 100 vertical levels
>> that range from 0 to 3000 m. I'd like to overlay the second dataset (line
>> contour) on the first one (filled contour), but I'm running into problems
>> because the base plot has fewer vertical levels. I tried res at tfDoNDCOverlay
>>        = True but it's not working.
>>
>> I was wondering how I could achieve this overlay. what I'd like to be
>> able to draw the base contour plot so that it takes the lower half of the
>> plot, and then overlay the line contour plot, and then write the Y axis
>> labels that range from 0 to 3000.
>>
>> I'd really appreciate any help.
>> Melissa
>>
>> --
>> *Melissa Kazemi Rad*
>> *Atmospheric Sciences Department*
>> *Rutgers University*
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>
>
> --
> Adam Phillips
> Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
> www.cgd.ucar.edu/staff/asphilli/   303-497-1726
>
> <http://www.cgd.ucar.edu/staff/asphilli>
>


-- 
*Melissa Kazemi Rad*
*Atmospheric Sciences Department*
*Rutgers University*
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