Hi Raghu,
the answers in detail below.
There will be released a new version soon (before the radiance workshop) with plenty new features (masking, zones, other indexes) and also a huge speed increase.
I have already tested the new version on more than 1000 different images and it is reproducing the data to 100% with an average speed improvement of factor 15 (for the images I have).
To extend the test I'm looking for approx. 5 volunteers doing some beta-testing with the new version in the next weeks. Operating systems for the test are Mac or Linux preferably.
If someone is interested in this new version, please send me a message.
Jan
1. difference between *E_vert*, *Edir* and if indirect vertical illuminance which is not shown here could be defined as (*E_vert- Edir*) ?
E_vert is the Illuminance calculated from the image (usually vertical illuminance)
E_dir is the illuminance just by the detected glare sources (needed for the CIE glare index)
2. What are *Eglare_cie* and *Lveil_cie*? if you could explain in simple terms it would be good.
these are disability glare values, for details read the documents on disability glare from the CIE
3. How is the *lum_sources* calculated? is it area weighted or just the average of luminance sources?
It is the average luminance of all glare sources, weighted by the solid angle equation: Lum_sources=(L1*omega_1+L2*omega_2+...Ln*omega_n)/(omega_1+omega_2+...omega_n)
4.difference between *Lveil* and *Lveil_cie*?
Lveil is the disability glare according to Pointer. Lveil_cie according to CIE.
5. what is *band_avlum*? every time i get -99 as its value.
you should read the manual page;-) , it is explained there as well. If you define a horizontal band, then you get the average luminance in that horizontal band calculated. If you dont activate the option, you get -99. The new upcoming version will have a separate output section for the band evaluation, showing more data within the band. So the last-line output for the band (and the -99 for non-activation) will disappear.
6. Why is the last column for each glare source repeated i.e i think its *sigma *which is repeated? is it on purpose or its a bug?
some values are the same for each glare source, some of them differ. That's why. Sigma is an angle needed to calculate the position index.
The actual official version, distributed from the Radiance-web-site, is bug-free as far as I know. A nasty output will be created, when no glare source is found (some results are nan or -inf). this is fixed for the upcoming version.
···
On 05/07/16 17:04, Raghuram Kalyanam wrote:
Hi,
I am working with Evalglare for my project. Some of the contents of the outputs are not clear, exactly how they meant. I got the following output
No pixels x-pos y-pos L_s Omega_s Posindx L_b L_t E_vert Edir Max_Lum Sigma xdir ydir zdir Eglare_cie Lveil_cie
1 42753 154.168663 259.975238 1484.9357 0.514510267 8.036393 290.135466 376.903168 1193.615506 330.128458 2110.121582 63.643786 0.659243 -0.651444 0.375525 295.006872 0.728316 63.643786
2 952 342.410504 309.523074 1243.639248 0.014228416 2.1257 290.135466 376.903168 1193.615506 330.128458 2110.121582 24.12489 0.02124 -0.977876 0.208102 16.006014 0.275013 24.12489
3 458 542.090308 329.040637 1088.438535 0.006608648 2.375158 290.135466 376.903168 1193.615506 330.128458 2110.121582 35.771815 -0.683566 -0.716718 0.138035 5.821968 0.045498 35.771815
4 1381 612.605097 320.46217 1147.674231 0.018557649 3.75482 290.135466 376.903168 1193.615506 330.128458 2110.121582 51.048974 -0.847475 -0.500159 0.177839 13.293604 0.051012 51.048974
dgp av_lum E_v lum_backg E_v_dir dgi ugr vcp cgi lum_sources omega_sources Lveil Lveil_cie band_avlum
0.230826 393.505949 1193.615506 290.135466 330.128458 7.652164 10.742965 78.552719 14.814979 1462.707418 0.553905 32.12133 1.099838 -99
Could some one explain
1. difference between *E_vert*, *Edir* and if indirect vertical illuminance which is not shown here could be defined as (*E_vert- Edir*) ?
2. What are *Eglare_cie* and *Lveil_cie*? if you could explain in simple terms it would be good.
3. How is the *lum_sources* calculated? is it area weighted or just the average of luminance sources?
4.difference between *Lveil* and *Lveil_cie*?
5. what is *band_avlum*? every time i get -99 as its value.
6. Why is the last column for each glare source repeated i.e i think its *sigma *which is repeated? is it on purpose or its a bug?
If you have some documentation which can explain this, that would be very useful.
Thanks & Regards,
Raghu
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, it is explained there as well. If you define a horizontal band, then you get the average luminance in that horizontal band calculated. If you dont activate the option, you get -99. The new upcoming version will have a separate output section for the band evaluation, showing more data within the band. So the last-line output for the band (and the -99 for non-activation) will disappear.