Hi everyone, I am currently working on a project where I want to calculate the shadow factor of some buildings onto a horizontal street. By shadow factor, I mean the fraction of the street that is covered by shade at some specific time. The tool I am using to estimate the shadow cast by the buildings, I am using the Sun Shadow Frequency tool from the 3D Analyst Toolbox. This works perfectly for the larger area that the buildings are standing on, but I haven't figured out how only calculate the shadows cast on the particular area of the street in between the buildings.
My question is:
How do I create an appropriate raster file that lets me calculate only the shadow on the street that I want to?
Or in other words, how do I create a raster file of that portion of the street, that can be used as the "Ground Surface" raster layer in the Sun Shadow Frequency tool?
In terms of the picture: I have calculated the whole area in green and pink, but in future calculations, I want the red part only.
The reason why I want to only calculate the smaller portion is, that I will need to calculate this for many different instances during the year and I hope to save a lot of computation time by reducing the size of the ground area that has to be taken into account.
Cheers and Thanks in advance for your help.
