[gradsusr] ctl file for irregular lon and lat dimension

[krishnamohan]

Dear Wendi,

If axis is irregular, you can use the 'levels' option to define the lat/lon
values instead of minimum value and interval. Like

XDEF 12 LEVELS 0 30 60 90 120 150 180 210 240 270 300 330
XDEF 12 LEVELS 15 45 75 105 135 165 195 225 255 285 315 345

http://cola.gmu.edu/grads/gadoc/descriptorfile.html#XDEF

Attaching a sample control file which I used to open an irregular latitude
spacing.

Regards,
Krishna


On Thu, Jun 20, 2019 at 1:16 PM wendi harjupa <wendiharjupa at gmail.com>
wrote:

> Dear GrADS users,
>
> I need your help with this problem.
> I have two-dimensional data, which have no linear resolution, such below;
>
> 1. The first, second, third and the last coordinate longitude data are
> 21.2887,  121.29860, 121.30840 and 148.76140, respectively.
> 2. The first, second, third and the last coordinate latitude data are
> 22.70906, 22.70909, 22.70911 and
> 46.19549, respectively.
>
> I want to make the control file for the data to plot it by grads,
>
> XDEF LEVEL 2800 121.28870  XXXX
> YDEF LEVEL 2400 22.70906 YYYY
>
> What number should I use to change XXXX and YYYY?
> and is there special command should I use to handle the irregular spatial
> resolution?
>
> Very appreciate for your help.
> Thank you very much.
> Best regards,
> wendi
>
>
>
>
> On Wed, Jun 19, 2019 at 9:17 PM wendi harjupa <wendiharjupa at gmail.com>
> wrote:
>
>> Dear GrADS user,
>>
>> I want to plot the data which has irregular lon and lat...
>> I donot want to interpolate the data, so I just want to plot it as the
>> original data.
>>
>> My question is how to make the control file for the irregular lon and lat
>> data.
>> I attach two data through this email,
>> 1. asci data which shows the different of lon and lat of the data.
>> 2. Binary format data of the asci data.
>>
>> Thank you very much for your help.
>>
>> best regards
>> wendi
>>  RDCA20150803_0305.bin
>> <https://drive.google.com/file/d/1HDCQXO30JwIRCaxTL-H1pf6eibRvhTpp/view?usp=drive_web>
>>  RDCA20150803_0305.txt
>> <https://drive.google.com/file/d/1l0vSZLO0Z21aBlfuMLF2UJM02m0kXTtC/view?usp=drive_web>
>>
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://gradsusr.org/pipermail/gradsusr/attachments/20190621/beee06d1/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: sample.ctl
Type: application/octet-stream
Size: 2918 bytes
Desc: not available
URL: <http://gradsusr.org/pipermail/gradsusr/attachments/20190621/beee06d1/attachment-0001.obj>