[ncl-talk] why do I get double Axis labels when I use gsn_csm_vector_scalar_map

[Mary Haley]

Hello,

You are setting a lot of resources that have to do with tickmarks, so
that's likely the culprit.

Since there are two plots being created under the hood by this function, I
wouldn't be surprised if there's a bug that is causing the tickmarks from
the vector routine to be turned on.

As a test, can you try commenting this line and let ncl-talk know what
happens:

  res at pmTickMarkDisplayMode = "Always"         ; turn on tickmarks

To work-around this issue, I suggest creating the contour plot over the map
using gsn_csm_contour_map, creating the vector plot separately using
gsn_csm_vector, and then calling overlay to overlay the vector plot on the
contour/map plot.  This way, you have more control over which resources get
applied to which plot.

For some help, see the overlay examples pages, and in particular, example
wrf_gsn_5.ncl:

http://www.ncl.ucar.edu/Applications/overlay.shtml

Note that this example actually creates *3* plots:

1. A filled contour plot
2. A vector plot
3. A map plot using wrf_map_resources to set the map projection

Then, it uses overlay to overlay #1 and #2 on #3.  Either way is fine.

--Mary


On Fri, Jul 27, 2018 at 2:21 PM, xiaoming Hu <yuanfangcan at hotmail.com>
wrote:

> When I change to gsn_csm_contour_map(wks,x,res), I can
> use tmYLLabelsOn/tmXBLabelsOn to control the latitude and longitude axis
> labels.
> The problem is when I use gsn_csm_vector_scalar_map(wks,u,v,x,res), why
> the additional axis labels (numbers) and tickmark show up and how can I
> control it?
> I am using 6.3.0
> Thanks
> Xiaoming
> ------------------------------
> *From:* ncl-talk <ncl-talk-bounces at ucar.edu> on behalf of xiaoming Hu <
> yuanfangcan at hotmail.com>
> *Sent:* Thursday, July 26, 2018 2:34 PM
> *To:* ncl-talk at ucar.edu; Xiaoming Hu
> *Subject:* [ncl-talk] why do I get double Axis labels when I use
> gsn_csm_vector_scalar_map
>
> why do I get double Axis labels when I use gsn_csm_vector_scalar_map
> I attached both my script and part of the figure.
>
> Thanks a lot!
>
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