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<TITLE>Re: [Radiance-general] test file</TITLE>
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<FONT SIZE="4"><FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'>Jia,<BR>
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There will always be some difference between two identical simulations in Radiance. The monte carlo sampling method used by radiance is like rolling the dice several times. If your sample density is high enough your results for identical simulations will exhibit minor differences. However with a low sampling density a few lucky hits or misses can skew the simulation results significantly.<BR>
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The radiance simulation parameters allow us to adjust the sampling density and other parameters to improve the correlation of the results. Trouble is there is no single set of parameter settings that works for every model. <BR>
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To allow the group to best help you refine your simulation parameters you should send the following:<BR>
1 – The radiance commands you used to run your simulation.<BR>
2 – The results of your simulations.<BR>
3 – A description of your model<BR>
4 – A rendering if you have one (proper etiquette is to upload the image to a website and include a link in your email to the list).<BR>
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Best,<BR>
Andy<BR>
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On 1/14/10 11:01 AM, "Hu,Jia" <hujia06@gmail.com> wrote:<BR>
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</SPAN></FONT></FONT><BLOCKQUOTE><FONT SIZE="4"><FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'>Hello all:<BR>
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I use radiance to simulate <B>the same model twice</B>. But the result (sensor point illuminance) is different. Could anyone know the reason? <BR>
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Thank you in advance,<BR>
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Jia<BR>
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