Re: error in gsn_csm_pres_hgt

From: David Brown <dbrown_at_nyahnyahspammersnyahnyah>
Date: Thu May 15 2014 - 13:00:09 MDT

Great! That's definitely a better way to do it.
 -dave

On May 15, 2014, at 12:07 PM, "Cathy Smith (NOAA Affiliate)" <cathy.smith@noaa.gov> wrote:

> Dave
>
> We just came up with a similar fix here.
>
> If we use
>
> time_new = cd_convert( dataplot&time, "days since 2000-01-01 00:00" )
> dataplot&time=time_new
> plot = gsn_csm_pres_hgt (wks,dataplot,res)
>
> It works.
>
> Cathy
>
>
> On 5/15/14 11:57 AM, David Brown wrote:
>> Hi Cathy,
>> The problem is because eventually NCL converts all coordinate values to float and thus loses precision, it's likely that some of these values become "equal" and therefore not strictly monotonic.
>> I would suggest subtracting an offset (maybe the first value) from all values prior to the plotting call. Of course you may need to adjust some of the titles or tick mark labels to account for this change.
>> -dave
>>
>> On May 15, 2014, at 10:13 AM, "Cathy Smith (NOAA Affiliate)" <cathy.smith@noaa.gov> wrote:
>>
>>> Hi all
>>> I'm getting the error
>>>
>>> warning:IrTransInitialize: trXCoordPoints contains invalid coordinate array: defaulting trXAxisType to LinearAxis
>>>
>>> from
>>>
>>> gsn_csm_pres_hgt (wks,dataplot,res)
>>>
>>> I found a similar error in the NCL archives and it said time couldn't be yyyymmdd but mine isn't; it's double, in order and linear.
>>>
>>> print(dataplot&time) yields
>>>
>>> Variable: time (coordinate)
>>> Type: double
>>> Total Size: 128 bytes
>>> 16 values
>>> Number of Dimensions: 1
>>> Dimensions and sizes: [time | 16]
>>> Coordinates:
>>> Number Of Attributes: 6
>>> units : hours since 1-1-1 00:00:0.0
>>> long_name : Time
>>> actual_range : ( 17628096, 17636874 )
>>> delta_t : 0000-00-00 06:00:00
>>> standard_name : time
>>> axis : T
>>> 17628096
>>> 17628102
>>> 17628108
>>> 17628114
>>> 17628120
>>> 17628126
>>> 17628132
>>> 17628138
>>> 17628144
>>> 17628150
>>> 17628156
>>> 17628162
>>> 17628168
>>> 17628174
>>> 17628180
>>> 17628186
>>>
>>> I'm using NCL V6.2, 64bit linux. Any ideas?
>>>
>>> Thanks
>>> Cathy Smith
>>> --
>>> ----------------------------------------------
>>> NOAA/ESRL PSD and CU CIRES
>>> 303-497-6263
>>> http://www.esrl.noaa.gov/psd/people/cathy.smith/
>>>
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>>
>
> --
> ----------------------------------------------
> NOAA/ESRL PSD and CU CIRES
> 303-497-6263
> http://www.esrl.noaa.gov/psd/people/cathy.smith/
>
> Emails about data/webpages may get quicker responses from emailing
> esrl.psd.data@noaa.gov
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Received on Thu May 15 13:00:32 2014

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