[ncl-talk] Error: dimension sizes of left and right hand side do not match

Wed Oct 23 14:00:26 MDT 2019

Hi Toni,
I think it is due to the lat coordinate variable being different sizes
between lat_1, and lat_2/lat_3. This would result in the error you are
seeing, as NCL is trying to write lat of size 169 for lat_1, but lat of
size 145 for the other two arrays. The solution would be to rename the lat
coordinate variable for lat_2 and lat_3 to something other than lat.
Best,
Adam

On Wed, Oct 23, 2019 at 1:50 PM Toni Klemm via ncl-talk <ncl-talk at ucar.edu>
wrote:

> Hi Rick,
>
> Sadly, that’s not the problem. It occurs in the very first loop already.
>
> However, I just commented out
>
> ; ncdf->lat_1 = lat_1
>
> which is three lines above the line that doesn’t work, and now the script
> runs without problems. I still don’t understand why this is happening.
> Could it be a bug in NCL, some sort of problem with too many variables in
> an output file?
>
> Toni
>
>
>
> *Toni Klemm, Ph.D.*Postdoctoral Research Associate
> Department of Ecosystem Science and Management
> College of Agriculture and Life Sciences
> Texas A&M University, College Station, TX
> www.toni-klemm.de | @toniklemm <http://www.twitter.com/toniklemm>
> Editorial Board member, Early Career Climate Forum
> <http://www.eccforum.org>
>
>
>
>
>
>
>
>
> On Oct 23, 2019, at 2:43 PM, Rick Brownrigg <brownrig at ucar.edu> wrote:
>
> Hi (offline for a moment):
>
> I can not see the problem either. I note that the lines in question are in
> a doubly-nested loop. Does this error occur on the very first attempt at
> writing a netcdf?  Each time through the loop(s), you are reassigning the
> filevariable ncdf -- I'm wondering if the "previous" file is not getting
> closed or perhaps the var ncdf retains some stale information?  Perhaps
> just before the end of the "if (netCDF1) " statement, place a delete(ncdf),
> which somewhat counterintuitively, will close the file.
>
> Rick
>
> On Wed, Oct 23, 2019 at 1:03 PM Toni Klemm via ncl-talk <ncl-talk at ucar.edu>
> wrote:
>
>> Hello NCL Community,
>>
>> I am perplexed by what seems to be a very simple error in my script
>> (attached). I am analyzing gridded data for the U.S. Great Plains region
>> and have divided the region into 6 parts, Northern, Central, and Southern
>> Plains as well as each of them into east and west.
>>
>> After analyzing the data I am assembling everything to save in an output
>> file, but for some reason this line in my code
>>
>> ncdf->lat_2 = lat_2
>>
>> gets this error message and the program crashes:
>>
>> Dimension sizes of left hand side do not match right hand side
>>
>> “lat_2” is the latitude dimension associated with the Central Plains data.
>>
>> “lat_1” three lines above it does not get an error, but when I comment
>> lat_2 out, then lat_3, three lines down, gets the same error.
>>
>> I looked very carefully and changed the script in a number of ways, but I
>> cannot find the reason for this error. lat_1 is longer than lat_2 and lat_3
>> (see below), but that shouldn’t be the reason.
>>
>> I did a printVarSummary on all three, but it didn’t give me any clues:
>>
>> Variable: lat_1
>> Type: float
>> Total Size: 676 bytes
>>             169 values
>> Number of Dimensions: 1
>> Dimensions and sizes: [lat | 169]
>> Coordinates:
>>             lat: [42..49]
>> Number Of Attributes: 2
>>   long_name : latitude
>>   units : degrees_north
>>
>> Variable: lat_2
>> Type: float
>> Total Size: 580 bytes
>>             145 values
>> Number of Dimensions: 1
>> Dimensions and sizes: [lat | 145]
>> Coordinates:
>>             lat: [36..42]
>> Number Of Attributes: 2
>>   long_name : latitude
>>   units : degrees_north
>>
>> Variable: lat_3
>> Type: float
>> Total Size: 580 bytes
>>             145 values
>> Number of Dimensions: 1
>> Dimensions and sizes: [lat | 145]
>> Coordinates:
>>             lat: [30..36]
>> Number Of Attributes: 2
>>   long_name : latitude
>>   units : degrees_north
>>
>> Does anyone have a suggestion? I appreciate your help!
>>
>> Tank you very much,
>> Toni
>>
>>
>>
>> *Toni Klemm, Ph.D.*Postdoctoral Research Associate
>> Department of Ecosystem Science and Management
>> College of Agriculture and Life Sciences
>> Texas A&M University, College Station, TX
>> www.toni-klemm.de
>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.toni-2Dklemm.de&d=DwMFaQ&c=u6LDEWzohnDQ01ySGnxMzg&r=zmhRVp0i4wZ5_1Ujh0fnRXAExHgKLTQu0rZLW7PxKA4&m=sDafbGmyKPR5OQ8WtRt5k5Mo7DoX0xF9js_2lyVQZdE&s=OS40pGsx6HC0-JwGgMzYsIvQgnHirMy8x7lQ1OPcwfQ&e=>
>>  | @toniklemm
>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.twitter.com_toniklemm&d=DwMFaQ&c=u6LDEWzohnDQ01ySGnxMzg&r=zmhRVp0i4wZ5_1Ujh0fnRXAExHgKLTQu0rZLW7PxKA4&m=sDafbGmyKPR5OQ8WtRt5k5Mo7DoX0xF9js_2lyVQZdE&s=8187HO3W45kOnzV2tJWGiB-WuN9l4rtyMeaHDTvEHqY&e=>
>> Editorial Board member, Early Career Climate Forum
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>>
>>
>>
>>
>>
>>
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-- 
Adam Phillips
Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
www.cgd.ucar.edu/staff/asphilli/   303-497-1726

<http://www.cgd.ucar.edu/staff/asphilli>
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