[ncl-talk] Problem: Stripes in contour maps

[Rick Brownrigg]

Hi Werner,

I can certainly reproduce the results. In fact, I get 3 different results
using CellFill vs. RasterFill vs. AreaFill with that
res at mpShapeMode="FreeAspect"
resource set.  (CellFill and RasterFill are consistent with each other if
that mapShapeMode is left at its default, but AreaFill still looks
dramatically different).

Unfortunately, I do not have a solution or work-around for you. I will file
a bug report on this.  Is this a show-stopper for what you are trying to do?

Rick


On Fri, Nov 7, 2014 at 9:23 AM, Werner Schneider <
werner.schneider at uni-bonn.de> wrote:

> Dear NCL team,
>
> we have encountered a NCL problem when drawing contour
> maps. If we use non rectangular grids and the data field
> covers an area larger than the map limits, clipped data
> (directly from the map limits) seems to be mirrored into
> the inner part of the map. This only happens if we use the
> following resources combinations:
>
>
> res at mpShapeMode       = "FreeAspect"
>
> res at cnFillMode            = "CellFill"
>
> The specific result depends on the choice of the viewport.
> In any case no error message is generated.
>
> We use NCL version 6.2.0 with Linux 3.11.6-4-desktop
> x86_64 x86_64 x86_64 GNU/Linux.
> Please find attached an NCL script demonstrating the
> problem with simple artificial data and a postscript file
> with the plot result.
>
> Is there any problem in our script (perhaps forgotten
> additional resources) or maybe a NCL problem?
>
> Regards,
> Werner Schneider
>
>
>
> ------------------------------------------
> Werner Schneider
> Meteorological Institute University Bonn
> Auf dem Huegel 20
> 53121 Bonn
> Germany
> Phone: +49 (0)228 73 5186
> E-Mail: werner.schneider at uni-bonn.de
> ------------------------------------------
>
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