https://community.esri.com/t5/arcgis-pro-questions/sun-shadow-frequency-on-specific-area/m-p/1282707#M68399 <P>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.</P><P>My question is:</P><P>How do I create an appropriate raster file that lets me calculate only the shadow on the street that I want to?</P><P>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?</P><P>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.</P><P>&nbsp;</P><P>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.</P><P>Cheers and Thanks in advance for your help.</P> Wed, 26 Apr 2023 09:27:30 GMT Mammon72 2023-04-26T09:27:30Z https://community.esri.com/t5/arcgis-pro-questions/sun-shadow-frequency-on-specific-area/m-p/1282707#M68399 <P>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.</P><P>My question is:</P><P>How do I create an appropriate raster file that lets me calculate only the shadow on the street that I want to?</P><P>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?</P><P>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.</P><P>&nbsp;</P><P>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.</P><P>Cheers and Thanks in advance for your help.</P> Wed, 26 Apr 2023 09:27:30 GMT https://community.esri.com/t5/arcgis-pro-questions/sun-shadow-frequency-on-specific-area/m-p/1282707#M68399 Mammon72 2023-04-26T09:27:30Z https://community.esri.com/t5/arcgis-pro-questions/sun-shadow-frequency-on-specific-area/m-p/1533818#M87854 <P>I realize this is super late, but did you try creating a polygon for your AOI and then using that to set a processing extent on the Environments tab of the tool?</P> Sat, 31 Aug 2024 19:42:44 GMT https://community.esri.com/t5/arcgis-pro-questions/sun-shadow-frequency-on-specific-area/m-p/1533818#M87854 HollyTorpey_LSA 2024-08-31T19:42:44Z