[ncl-talk] draw order issue

[Rick Brownrigg]

Hmmm...it looks to me everything is working as it expected. Figure 1 looks
right. Figure 2 -- yes that's a larger spatial domain and the MPAS cells
overwhelm the map. You could try something like making the map outlines
white some other contrasting color (and probably would want PostDraw for
this purpose). But I'm not sure the resultant map would be any more
useful.  Figure 3 is again out over the ocean, and is more than half as
small a domain, spatially, as Fig 2.

A final thought on Fig 2. -- you could play with the opacity of the grid;
make it highly translucent. Probably still too dense.

HTH...
Rick


On Thu, Sep 15, 2022 at 3:21 PM Gurer, Kemal at ARB <kemal.gurer at arb.ca.gov>
wrote:

> Hi Rick,
>
>
>
> I feel really bad that I didn’t see invoking map twice. Since I was
> playing around with map, I simply forgot to delete the second call. It is
> my mistake. I apologize for this mistake and taking your time.
>
>
>
> I can now plot the grid cells with map on it. Yet, the problem actually
> still persists. I can plot both map grid outlines and MPAS grid cells if I
> zoom in very close to the map. Here is the code that I change to play with
> map and grid cells:
>
>
>
> ; ---------- This plots both map boundaries and MPAS grid cells due to
> zooming in on the map at San Francisco Bay. Both of them are visible.
> Please see attached figure 1 ----------
>
>
>
> res at mpMinLatF                   = 36
>
>  res at mpMaxLatF                   = 39           ; choose subregion
>
> res at mpMinLonF                   = -124
>
>  res at mpMaxLonF                   = -121
>
>
>
> map = gsn_csm_map(wks,res)
>
>
>
> ; --------- This plots both map boundaries and MPAS grid cells. But, MPAS
> grid cells crowd the plot and map and grid cells are not discernible. Map
> boundary is just outside of California and Nevada. Please see figure 2 -----
>
>
>
> res at mpMinLatF                   = 31.5
>
> res at mpMaxLatF                   = 43           ; choose subregion
>
> res at mpMinLonF                   = -127.5
>
> res at mpMaxLonF                   = -113
>
>
>
> map = gsn_csm_map(wks,res)
>
>
>
> ; -------- This only plots MPAS grid cells. Map boundaries are not
> plotted. Map boundary is slightly bigger than the domain covering in Figure
> 2. Please see figure  3--------
>
>
>
>   res at mpMinLatF            =  30
>
>   res at mpMaxLatF            =  35
>
>   res at mpMinLonF            = -130
>
>   res at mpMaxLonF            = -125
>
>
>
> ; ------------------------------------------
>
>
>
> Kemal.
>
>
>
> *From:* Rick Brownrigg <brownrig at ucar.edu>
> *Sent:* Thursday, September 15, 2022 1:38 PM
> *To:* Gurer, Kemal at ARB <kemal.gurer at arb.ca.gov>
> *Cc:* ncl-talk at ucar.edu forum <ncl-talk at ucar.edu>
> *Subject:* Re: [ncl-talk] draw order issue
>
>
>
> *CAUTION: This email originated from outside of the organization. Do not
> click links or open attachments unless you recognize the sender and know
> the content is safe.*
>
> OK,
>
>
>
> In the script, as presented to us, there are two calls to gsn_csm_map.
> They have different lat/lon extents and they both assign the result to the
> variable "map" (I'm suprised there was no error/warning).  In any case, the
> 2nd set of lat/lon extents are off the coast. That second set is what the
> MPAS appears to be drawing on top of.
>
>
>
> HTH...
>
> Rick
>
>
>
>
>
> On Thu, Sep 15, 2022 at 1:56 PM Gurer, Kemal at ARB <kemal.gurer at arb.ca.gov>
> wrote:
>
> Hi Rick,
>
>
>
> I tried that before. It didn’t help. That is, MPAS grid cells are still
> plotted without map outlines.
>
>
>
> Kemal.
>
>
>
> *From:* Rick Brownrigg <brownrig at ucar.edu>
> *Sent:* Thursday, September 15, 2022 12:39 PM
> *To:* Gurer, Kemal at ARB <kemal.gurer at arb.ca.gov>
> *Cc:* ncl-talk at ucar.edu forum <ncl-talk at ucar.edu>
> *Subject:* Re: [ncl-talk] draw order issue
>
>
>
> *CAUTION: This email originated from outside of the organization. Do not
> click links or open attachments unless you recognize the sender and know
> the content is safe.*
>
> Hi Kemal,
>
>
>
> What does the plot look like when you try to plot both map and lines
> together?  Have you tried without the
>
> mpOutlineDrawOrder resource?
>
> Rick
>
>
>
> On Thu, Sep 15, 2022 at 1:22 PM Gurer, Kemal at ARB via ncl-talk <
> ncl-talk at mailman.ucar.edu> wrote:
>
> Hello ncl’ers,
>
>
>
> I am trying to plot MPAS grid cells on the top of US map using ncl. I
> attached the script that plots map and outlines. I can draw maps and MPAS
> grid cells separately, but I cannot plot map outline on the top of MPAS
> grid cells even though I set the draw order to “PostDraw”. Could you help
> me to identify what I am doing wrong?
>
>
>
> Thanks,
>
>
>
> Kemal.
>
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