[Radiance-general] gendyamtx - cumulative results

[Jack de Valpine]

Hi Greg,

Excellent! This is what I was wondering about as a solution.

I will give this a try.

Thanks,

Jack

Sent from my Verizon Wireless 4G LTE DROID

"Gregory J. Ward" <gregoryjward at gmail.com> wrote:

>Actually, I just realized that you could shortcut this quite a bit by summing together your time steps out of gendaymtx.  You should be able to run:
>
>gendaymtx -od jan.wea | total -id3 -720 > jan.sky
>dctimestep  winterior1w.vmx blinds30.xml westelev.dmx jan.sky > win1w_jan.hdr
>
>Again, you'll need to run dctimestep for each of your windows and sum the results, but it should be a whole lot quicker this way.  If you want to sum up a whole year, just change the -720 option on total to -8160 (or whatever).
>
>Cheers,
>-Greg
>
>> From: Greg Ward <gward at lmi.net>
>> Date: June 7, 2013 11:44:02 AM PDT
>> 
>> Hi Jack,
>> 
>> I think the easiest method would be to extract the hours you want to accumulate from your WEA file, send them through gendaymtx and dctimestep like so:
>> 
>> 	gendaymtx -of subyear.wea > subyear1.smx
>> 	dctimestep -if -n 720 -o win1w_%03d.hdr winterior1w.vmx blinds30.xml westelev.dmx subyear1.smx
>> 	pcomb win1w_*.hdr > win1w_sum.hdr
>> 	rm win1w_*.hdr
>> 
>> This will generate 720 images corresponding to a month's worth of hourly inputs from window #1 on the west elevation.  The above steps (except the first) will have to be repeated for your different windows.  If you do a year at a time, you'll have to sum all these images together in batches, since pcomb only handles up to 1024 images at a time (so long as you don't run into system limits first).
>> 
>> I hope this addresses your question.  To be honest, I've never done anything like this and I'm not entirely sure I got it right.
>> 
>> Cheers,
>> -Greg
>> 
>>> From: Rob Guglielmetti <rob.guglielmetti at gmail.com>
>>> Date: June 7, 2013 11:26:03 AM PDT
>>> 
>>> Guess I'd better read that thing. Initially, it did not support 3 phase. Hopefully Andy or Greg or someone else who actually knows what the hell's going on can answer your question. =8-)
>>> 
>>> - Rob
>>> 
>>> On Jun 7, 2013, at 12:15 PM, Jack de Valpine <jedev at visarc.com> wrote:
>>> 
>>>> Sorry, but why not? I think Andy demos (for photocells) in the last version of his tutorial...
>>>> 
>>>> -Jack
>>>> 
>>>> On 6/7/2013 2:13 PM, Guglielmetti, Robert wrote:
>>>>> I think the simple answer is that gendaymtx currently doesn't support 3 phase. Weah.
>>>>> 
>>>>> - Rob
>>>>> 
>>>>> -----Original Message-----
>>>>> From: Jack de Valpine [mailto:jedev at visarc.com]
>>>>> Sent: Friday, June 07, 2013 11:24 AM
>>>>> To: Radiance general discussion
>>>>> Subject: [Radiance-general] gendyamtx - cumulative results
>>>>> 
>>>>> Hello All,
>>>>> 
>>>>> If I want to show cumulative results (images), eg lux hrs per year or lux hrs per month, what is the right way to do this for the 3 phase with dctimestep. So for example with an annual sky matrix generated with gendaymtx, do I sum this up somehow and then apply?
>>>>> 
>>>>> Thanks,
>>>>> 
>>>>> -Jack
>
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