Latest Contributions by ErinKennedy

It appears I cannot do a 'negative' extrusion downward. Could I alter that script to make an upward facing lot downward facing to extrude downward? And if so, what would I change? Thanks! ... View more

After looking at the problem some more, I decided to use IDW (from the geostatistical analyst extension) to interpolate a raster from the points instead of creating a TIN, with an extent beyond the lines, then I used interpolate shape. This seemed to work okay and the results look good to me. But perhaps someone knows a reason why this isn't a good method? ... View more

Thanks for the response Xander. It is only a few lines in my study area that I have this issue with (7!), but my goal is to develop a method for conversion to 3D that can be applied to a greater area, which will probably have many more similar cases. So, I would like to find a way to automate the conversion as much as possible. Unfortunately, I don't yet have any experience with python scripts (it is on my to-do list, but I am a busy student and GIS is only part of my study so it will probably have to be put off until I have some free time). So, for now I am thinking that I should add points at the ends of the lines where there are none and extrapolate the depths by hand. Then, create the TIN and interpolate the shape. But in my method I will note that this should be automated with a script if it were to be applied to a greater area. Thanks for all the help! ... View more

Yes, thanks for the response. I put one of the lines and the related points in the zip file, as well as my created TIN and interpolation. ... View more

Thanks! This was indeed the problem and worked perfectly after unspliting the lines. ... View more

Thanks for the response Xander. Unfortunately, because the points are randomly distributed along where the lines run and not necessarily at the endpoints of the lines, the TIN it creates doesn't cover all the area that the lines do. So, my output after using interpolate shape makes it look like my lines are broken up and doesn't include some segments of the lines. Any further ideas on this? ... View more

Hi Matt, Thanks for your answer. I am aware I can change the cylinder diameters and colors in ArcScene. I changed the diameters for the pipes/cables in ArcScene before I created the multipatch, so they are correct. I was really just curious if it would be possible to alter that in CE as well because then it could be automated (in ArcScene, I have to change the diameters for each size pipe by hand and there are a lot of different sizes). My goal is to research what the possibilities and potential benefits of 3D models would be for underground infrastructure. Obviously I can create the models and use them for analysis with the 3D analyst extension, but I also wanted to explore the possibilities and potential benefits for visualisation purposes. City Engine seems more suitable for above ground visualisation (buildings, streets, hydrants, etc), which I want to couple with the underground. ... View more

Matt, Now I have created a multipatch version of my data, but I have a few questions about assigning attributes to this. 1. Now that I have multipatch "cylinders", it is actually a bunch of long thin polygons that are put into a cylinder shape. I want to give the cylinders of a certain network a color, which I tried to do with the following script: @StartRule Lot --> comp (f) {side: pipeside} comp (v) {all : vertedge} comp (e) {all : vertedge} pipeside--> color (0,1,1) vertedge--> color (0,1,1) The lines the separate each polygon of the "cylinder" are still black, which makes the entire pipe structure look black when it isn't zoomed in (see attached image; top is zoomed out and bottom is what it looks like zoomed in). Am I missing another geometric element of the multipatch that I need to assign the color to? 2. To create a multipatch file (which I did in ArcScene), I use symbology to define a 3D shape and then create the multipatch based on that shape. Is it possible to then change the "size" or "diameter" of the "cylinders" I created in City Engine? How would I go about that? ... View more

So, now I have a different problem. I am trying to use 'feature vertices to points' for another feature and I have 24,755 lines, but it gives me both 93,540 begin and end points. I took a look at the situation by selecting generated startpoints with the same objected and the related line, so I can see what the situation is (see attached screenshot), but I don't know how to deal with this. If I determine the DEM at these points, how would I again couple it to a line to create a 3D model by attributes? Ideas? ... View more

Xander, Sorry, I somehow missed the second part of your post after the code. When you use the setting "both ends", you get two points for each line, which if added to the line file, I don't know how to use field calculator to add "every other" value to the end or start point field. So, I will instead do the operation "feature vertices to points" twice, once for start points and one for end points and join both of them to the lines. Thanks for all your help! ... View more