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This may or may not be what you're looking for, but I had a similar problem a couple of years ago. The solution was a custom script written by someone else. Basically it creates a circular buffer around a central point (or points) split into wedges using user defined angles. Creating Wedge/Pie Shaped "Buffers" Around Points As far as I remember it works with the basic license, though I don't recall which extensions are required.
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01-22-2016
01:06 AM
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Hi Roger, While not specific to your problem, I've had similar problems with empty results from various tools and often the problem stems from incorrect formatting or illegal characters somewhere in the attribute table. Definitely worth checking.
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05-29-2015
12:14 AM
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Hi Adam, Were you able to get the python code to successfully work with your data set? I have tried applying it to my own data and am getting error messages after the table has been created and the first lot of temporary shape files have been created. Cheers, Ros Hi Ros I may or may not be correct here (very new to python) but I was trying to use the same script and found the same issue. I believe it can be resolved by changing the line skyCursor = arcpy.SearchCursor(tmpSingleLineShp, "", "", "Length", "") to skyCursor = arcpy.SearchCursor(tmpSingleLineShp, "", "", "Shape_Leng", "") It seems to work with the data points that I'm using (only two of them for the time-being). If anyone can shed any light whether this is indeed the correct solution I would be grateful. As I said above - very new to Python! Jonathan
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11-04-2013
05:29 AM
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Extrude the polygons in ArcScene, then run Layer 3D to Feature Class to create a multipatch feature class which can be your Input Features in Skyline. Best, Eric Hi Eric First of all, thanks for your help so far. I was planning to use the skyline tool to calculate the portion of sky visible from a series of observer points (around 65 in total at the moment). I originally thought I might be able to do this using the Skyline graph tool however it only reports a single value when run, regardless of the number of points in the input file. Is there any way to run this tool on multiple points to obtain a value for each point rather than a singe value for all points (which is what I assume it's calculating)? Thanks in advance. Jonathan p.s. If you would prefer I start a new thread that's fine.
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08-20-2013
12:58 AM
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Extrude the polygons in ArcScene, then run Layer 3D to Feature Class to create a multipatch feature class which can be your Input Features in Skyline. Best, Eric Hi Eric Thanks for taking the time to reply. I've managed to create the multipatch feature as you instructed and once I realised I had to convert my points into 3d as well the skyline feature worked. I've been trialing this on a small subset of the data so with a bit of luck it will work on the full set. Thanks for your help. Jonathan
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08-15-2013
10:14 AM
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Hi Folks I would like to use the Skyline tool to determine the visible sky around several observation points. The objects blocking the view, as it were, are buildings obtained from a shapefile from LIDAR data. The building data is a 2d shapefile with an attribute for height. I've tried using the "feature to 3d by attribute" in the 3d analyst toolbox, but this seems to raise the 2d polygon to the height specified in the attribute rather than create a building shaped polygon. I've can view the buildings in 3d in ArcScene using the "Extrusion" tab but when the skyline tool is applied to this layer it gives a perfect circle around each point suggesting this is not working as intended. There is no base layer required for the purpose of this work although I have a digital elevation raster if it's required. My question is - how do I make the skyline function work with my shapefile? Thanks in advance. p.s. apologies if this is answered elsewhere - I've been searching for a while with no success. p.p.s I'm pretty inexperienced so if possible a simpler explanation would be good 😛
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08-14-2013
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