[Radiance-general] dctimestep error

[Greg Ward]

Just sharing this with the mailing list to say that the issue was resolved, and there's nothing wrong with dctimestep or the 3-phase method other than the fact that it's all very confusing.

Cheers,
-Greg

> From: raghuram kalyanam <kalyanam at rhrk.uni-kl.de>
> Date: October 10, 2017 2:13:49 AM PDT
> 
> Thanks Greg. It is working. I did a mistake initially putting -n 8760 which threw the EOF error  and then changed the SMX file, which was created with Tregenza patches, then it threw column count error. Sorry for the confusion.
> Thanks again for the patience and looking into the problem.
> 
> Best Regards,
> Raghu
> 
>> On 9. Oct 2017, at 18:37, Gregory J. Ward <gregoryjward at gmail.com> wrote:
>> 
>> Hi Raghu,
>> 
>> I ran the command:
>> 
>> 	dctimestep photocells.vmx 2011-SA5.XML south.dmx frankfurt.smx > results.txt
>> 
>> using the 5.1 release of Radiance and got the attached result.
>> 
>> What system are you using, and which version of Radiance are you running.  (I.e., what does "rpict -version" say?)  I don't really understand where your error is coming from, as the files appear to be OK.
>> 
>> -Greg
>> 
>> <results.txt.gz>
>> 
>>> From: raghuram kalyanam <kalyanam at rhrk.uni-kl.de>
>>> Subject: Re: [Radiance-general] dctimestep error
>>> Date: October 9, 2017 1:55:12 AM PDT
>>> 
>>> Hi Greg,
>>> 
>>> Sorry for the delay. Did have access to mails last week. Here are the files. Let me know if there is problem downloading them. Thanks for your help.
>>> 
>>> Best Regards,
>>> Raghu
>>> 
>>>> On 29. Sep 2017, at 18:03, Greg Ward <gregoryjward at gmail.com> wrote:
>>>> 
>>>> Hi Raghu,
>>>> 
>>>> Can you send me all of your matrices (compressed) and the commands that created them if they are not in the headers?  If they are too big for e-mail, perhaps you can post them on a website.
>>>> 
>>>> Cheers,
>>>> -Greg
>>>> 
>>>> 
>>>>> From: raghuram kalyanam <kalyanam at rhrk.uni-kl.de>
>>>>> Date: September 29, 2017 6:47:39 AM PDT
>>>>> 
>>>>> 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>:
>>>>>> 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> 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>:
>>>>>>> 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 are the  files.
>>>>>>> 
>>>>>>> Best Regards,
>>>>>>> Raghu
>>>>> 
>>>>> https://www.radiance-online.org/mailman/listinfo/radiance-general
>>> 
> 
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