RayMan is capable of estimating Tmrt based on astronomic values and the gepgraphic position.
In this case you need the location, date and time, cloud cover and the horizon limitation (best together with an idea if the position is exposed to direct sunlight or not, thus, a model area or a fisheye image).
horizon limitation can be considered in RayMan by entering the SkyView Factor, that can be calculated based on a model area (Input --> Obstacles) or a fisheye image (Input --> SkyViewFactor).
I tried to give some fisheye image to the Sky View Factor, I clicked on 'cut off' and I saved horizontal limitation. Then I closed the window with sky view factor edit and finally I counted PET by Rayman. I wonder, if this process I wrote is correct, because I haven't found any instruction, how to do this.
if you clicked the "monochrome" button (the circle with black on the right and white on the left, second row of icons, on the very right) prior to saving, that will most probably work.
What does SVF in your output say? Plausible value? 0.0? 1.0?
There actually should be a manual available. However, it seems like it is not. I'll have a check on that as soon as possible. Sorry or the inconvenience!
Why didn't I do it sooner. Now I know how to work with sky view factor editor, but the editor doesn't want to delete all blue colour from the sky and conversely deletes whites area on buildings.
My professor, that helps me with my thesis, told me, that he had SVFs for meteorological stations, I need to count PET. I wonder, if it's possible to enter these SVFs into RayMan the same way as e. g. temperature or relative humidity without inserting fisheye image? I think not, but I ask for sure.
For the white buildings, they can be covered using the first two icons in the "draw" section on the upper right. The sky of course needs to be totally white. To achieve this, you can pick the color by hitting the dropping glass icon and clicking the remaining blue area. Then again hit "Cut off".
Unfortunately no, you can't. Most likely you are only provided with the planar SVF anyway, while for internal calculations RayMan requires the spheric one (3 dimensional). EDIT: If you have a FishEye Image for each of the stations, of course, you could use those.
Working with FishEye photographs please always check the cardinal directions. Some Lenses will flip East and West, some North and South and others both or none. Always double check!
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06.12.2016 19:16
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