[Radiance-general] dctimestep error

[raghuram kalyanam]

In dctimestep manual it asks to put -n when the sky matrix file doesn’t have the no of  columns in the header .Since  my smx file has 8760 columns in the header , i tried removing -n option  and  it says 'fatal - unexpected column count in header’. 

May be i should give a try with RMTXOP. Thanks for the information Germán .

Best Regards,
Raghu 

> On 29. Sep 2017, at 15:26, Germán Molina Larrain <germolinal at gmail.com> wrote:
> 
> Yes.... smx files are huge. You could think on, instead of storing them, just piping it to dctimestep, so you save storage. 
> 
> gendaymtx -m 4 WEATHER.wea | dctimestep V T D > results
> 
> Maybe you can try deleting the -n option in dctimestep...? 
> 
> You can allways use RMTXOP program as well.
> 
> Kind regards
> 
> Germán
> 
> 2017-09-29 10:18 GMT-03:00 raghuram kalyanam <kalyanam at rhrk.uni-kl.de <mailto:kalyanam at rhrk.uni-kl.de>>:
> Hi Germán,
> 
> Thanks for the reply. I wondered about this initially, and tried this with several other climate files, the error was the same. Yes the epw and wea has 8760 lines. Also i generated the sky matrix with -m 4 option and it generated a huge smx file about 200mb.
> 
> Best Regards,
> Raghu
> 
>> On 29. Sep 2017, at 15:05, Germán Molina Larrain <germolinal at gmail.com <mailto:germolinal at gmail.com>> wrote:
>> 
>> Hello Raghu, 
>> 
>> It has been a while since the last time I played with the 3-phase method, so I forgot what error message appears when. However, you might want to check two things:
>> That your Sky Matrix and your Daylight matrix were created with the same number of patches in the sky. Your Daylight Matrix was created using MF-4, so your skymatrix should be created using --> gendaymtx -m 4 WEATHER.wea > mannheim.smx
>> Check that your weather tape has, indeed, 8760 lines.... I am not sure the -n 8760 options is still needed in dctimestep, though.
>> Hope this helps!
>> 
>> Germán
>> 
>> 
>> 2017-09-29 6:28 GMT-03:00 raghuram kalyanam <kalyanam at rhrk.uni-kl.de <mailto:kalyanam at rhrk.uni-kl.de>>:
>> Hi All,
>> 
>> Did any one come across below error from the sky matrix file, while executing the dctimestep?
>> 
>> dctimestep -n 8760 Geometry/vmx/photocells.vmx 2011-SA5.XML matrices/south.dmx mannheim.smx > matrices/Satine_Dark_Grey_White.dat
>> 
>> fatal - unexpected EOF reading mannheim.smx
>> 
>> I created smx file with gendaymtx with out any error.
>> 
>> If i use a sky vector then i don’t see any error.
>> 
>> Is it some thing to do with the time steps and header in smx file?
>> 
>> It would be great if some one could help me. Incase if you want to try it out ,here <https://seafile.rlp.net/d/9ccd83f3c24141709aa7/> are the  files.
>> 
>> Best Regards,
>> Raghu
>> 
>> 
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