topic Re: Arcscene streaking transparent draped layers in 3D Mapping Questions

Arcscene streaking transparent draped layers

JohnLowry — Thu, 13 Aug 2015 04:59:30 GMT

I am using Arcscene to create a 3d view with a transparent layer draped over the DEM. I find I get streaks in the view. Can someone tell me what causes this? Is there something I can do to avoid this? Many thanks.

Re: Arcscene streaking transparent draped layers

MicahTaylor — Thu, 13 Aug 2015 13:58:26 GMT

I am not exactly sure how to rid of the lines in ArcScene. However, try exporting the scene to a 3D Web Scene and see if the lines are still visible. This may clean up the look of the draped layer.

This will give you a .3ws file. Just upload that file to ArcGIS online and open the scene.

Re: Arcscene streaking transparent draped layers

JohnLowry — Sun, 16 Aug 2015 21:40:52 GMT

Hi Micah,

Thanks. I tried just as you suggested, and found that I still have streaks in ArcGIS online (http://arcg.is/1NbQxzL) I am new to working with 3d visualizations so don't know if this should be happening. I doubt it should be, so am beginning to think there might be something wrong with my data. But I don't know what.

Many thanks,

John

Re: Arcscene streaking transparent draped layers

MikeCusi — Sun, 16 Aug 2015 22:50:21 GMT

What did you use as the base height for the transparent layer? Are they all in the same xyz coordinate system?

Re: Arcscene streaking transparent draped layers

faiz_ur_rehmanfaiz — Sun, 16 Aug 2015 22:53:46 GMT

Just use sketch up or city engine and export into Arc Scene.

Re: Arcscene streaking transparent draped layers

JohnLowry — Sun, 16 Aug 2015 23:17:47 GMT

I'm using a vertical exaggeration calculated from the extent (10x). The DEM x,y,z are all meters. I am using base-height of 2000 m for the geology layer. Which seems too high to me, but when I set it any lower, the geology layer doesn't drape over the dem, but seems to "cut through" it. And still there is the streaking.

Re: Arcscene streaking transparent draped layers

MikeCusi — Mon, 17 Aug 2015 01:06:19 GMT

So the geology layer is using the base height of your DEM X 10? Why not use the DEM as the source of the base height for your geology layer and apply an offset?

Re: Arcscene streaking transparent draped layers

JohnLowry — Mon, 17 Aug 2015 01:33:25 GMT

I think that's what I'm doing. From Scene layers, I have set the vertical exaggeration based on extent--which comes to about 10x. I want to have the shaded relief under the transparent geology layer, so for both of them I am using the dem as the "Elevation from surfaces" and have tried setting the offset of the geology "above" the elevation surface. And it doesn't show up unless I specify an offset that is really large, e.g. 300.

Re: Arcscene streaking transparent draped layers

MikeCusi — Mon, 17 Aug 2015 02:52:39 GMT

You could try rasterizing your geology layer to the same pixels as your DEM.

Re: Arcscene streaking transparent draped layers

JohnLowry — Mon, 17 Aug 2015 21:20:20 GMT

Thanks to all you shared your advice.

I've been informed that there is known bug with ArcScene 10.2.2. that causes this. I was advised to use ArcGlobe instead and have done so. There is no streaking when I use ArcGlobe.