[ncl-talk] GKS contour problem

[LSL]

Dear Dr. Brownrigg,


Thanks very much for your indication. You are right. It is due to my 
mistake that mpLambertParallel2F is invalid.


When the code changes from res at mpLambertParallel1F = 34.27 
res at mpLambertParallel2F =108.93 to res at mpLambertParallel1F = 25.0 
res at mpLambertParallel2F = 47.0. It works.


Best regards,

Liang


On 2019/4/9 下午11:53, Rick Brownrigg wrote:
> Its very hard to say from just inspecting your script. There are 
> multiple places where corners appear to be set, many of them commented 
> out, and the readers here are left to wonder which were in effect at 
> the time the error messages would occur. It does sound like the 
> corners specification is not correct -- I would print values everywhere.
>
> I would also note that the setting for the resource 
> mpLambertParallel2F is not a valid value for latitude -- this looks 
> like a setting for mpLambertMeridianF. I don't know if this is enough 
> to confuse the projection algorithm or not. Maybe fix this first 
> before trying anything else?
>
> Rick
>
> On Tue, Apr 9, 2019 at 1:16 AM LSL <lslrsgis at whu.edu.cn 
> <mailto:lslrsgis at whu.edu.cn>> wrote:
>
>     Dear NCL Community,
>
>
>     I am writing for a GKS contour problem. The lines relative to this
>     error might be something for projection. The complete NCL script
>     is attached.
>
>
>     ; res at mpLimitMode = "Corners"
>
>     ; res at mpLeftCornerLatF = lat2d(nlat-1,nlon-1)
>
>     ; res at mpLeftCornerLonF = lon2d(0,0)
>
>     ; res at mpRightCornerLatF = lat2d(0,0)
>
>     ; res at mpRightCornerLonF = lon2d(nlat-1,nlon-1)
>
>
>     The errors are given as follows:
>
>
>     GKS ERROR NUMBER 51 ISSUED FROM SUBROUTINE GSVP :
>
>     --RECTANGLE DEFINITION IS INVALID
>
>     GKS ERROR NUMBER 51 ISSUED FROM SUBROUTINE GSVP :
>
>     --RECTANGLE DEFINITION IS INVALID
>
>     GKS ERROR NUMBER 51 ISSUED FROM SUBROUTINE GSVP :
>
>     --RECTANGLE DEFINITION IS INVALID
>
>     GKS ERROR NUMBER 51 ISSUED FROM SUBROUTINE GSVP :
>
>     --RECTANGLE DEFINITION IS INVALID
>
>     warning:TickMarkSetValues: Zero span between tmXBDataLeftF and
>     tmXBDataRightF, turning bottom tickmarks off:[errno=1104]
>
>     warning:TickMarkSetValues: Zero span between tmXTDataLeftF and
>     tmXTDataRightF, turning top tickmarks off:[errno=1104]
>
>     warning:TickMarkSetValues: Zero span between tmYLDataBottomF and
>     tmYLDataTopF, turning left tickmarks off:[errno=1104]
>
>     warning:TickMarkSetValues: Zero span between tmYRDataBottomF and
>     tmYRDataTopF, turning right tickmarks off:[errno=1104]
>
>     GKS ERROR NUMBER 51 ISSUED FROM SUBROUTINE GSVP :
>
>     --RECTANGLE DEFINITION IS INVALID
>
>     GKS ERROR NUMBER 51 ISSUED FROM SUBROUTINE GSVP :
>
>     --RECTANGLE DEFINITION IS INVALID
>
>     GKS ERROR NUMBER 51 ISSUED FROM SUBROUTINE GSVP :
>
>     --RECTANGLE DEFINITION IS INVALID
>
>     GKS ERROR NUMBER 51 ISSUED FROM SUBROUTINE GSVP :
>
>     --RECTANGLE DEFINITION IS INVALID
>
>     GKS ERROR NUMBER 51 ISSUED FROM SUBROUTINE GSVP :
>
>     --RECTANGLE DEFINITION IS INVALID
>
>     GKS ERROR NUMBER 51 ISSUED FROM SUBROUTINE GSVP :
>
>     --RECTANGLE DEFINITION IS INVALID
>
>     GKS ERROR NUMBER -107 ISSUED FROM SUBROUTINE GSVP :
>
>     --MAXIMUM NUMBER OF ERROR MESSAGES EXCEEDED
>
>
>     Any indications would be appreciated. Thanks in advance.
>
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