topic Re: Slope of TIN in 3D Questions

Slope of TIN

RikusRoos — Thu, 01 Aug 2013 14:50:34 GMT

Hi I would like to know how to create a Slope of TIN file in ArcGIS 10.1. I used to work with ArcGIS 9 and usually created a slope of TIN file with the 3D Analyst drop down bar.

Thank you very much

Re: Slope of TIN

DanPatterson_Retired — Thu, 01 Aug 2013 15:30:12 GMT

Did you check for slope tools in the 3D analyst section of ArcToolbox?

Re: Slope of TIN

RikusRoos — Fri, 02 Aug 2013 05:47:57 GMT

I tried it, I used the surface slope tool in Arc 9 and was able to create slope of TIN files like the one below. But it seems like the surface tool in Arc 10 does not create the same type of file or I am just not choosing the right options? can someone help please?

[ATTACH=CONFIG]26415[/ATTACH]

Re: Slope of TIN

NeilAyres — Fri, 02 Aug 2013 06:04:39 GMT

Rikus,
once you have a tin, slope, aspect and elevation are all part of its properties.
Go to the symbology tab and add the slope, then display this.
Or am I misunderstanding your query?
Neil

Re: Slope of TIN

RikusRoos — Fri, 02 Aug 2013 06:27:07 GMT

Thank you for the reply Neil,

I dubbel checked to see if it is in symbology, but its not. with Arc 9 I selected 3D Analyst's drop down bar and selected slope - In slope I selected the TIN file as input with output set on degree - cell size 50. with these settings I created a slope of TIN file that I can use to create a Spatial histogram with. But it seems that I can not locate these features with Arc 10.1. The picture above is an example of a slope of TIN file.

Thank you for the help!

Re: Slope of TIN

EricRice — Fri, 02 Aug 2013 17:42:43 GMT

When you used the toolbar method, the TIN input was converted to raster behind the scenes. The Slope GP tool only accepts rasters as input. If you want a slope raster output, first convert your TIN to raster and then just run the Slope GP tool. The Surface Slope GP tool output is polygons, but it does let you input the TIN directly.

Best,
Eric

Re: Slope of TIN

KhalidDuri1 — Sat, 17 Aug 2013 02:50:39 GMT

I dubbel checked to see if it is in symbology, but its not.

In order to use the slope renderer, you have to add the renderer to the Symbology tab in Layer Properties. Follow these steps:

1. Right-click the TIN layer in the table of contents and select Properties.
2. Click the Symbology tab.
3. Uncheck the active renderer (i.e. Elevation or any other TIN face renderer that is checked).
4. Click Add.
5. Select the "Face slope with graduated color ramp" option and click Add.
7. Click Dismiss.
8. Select the Color Ramp drop-down and choose your desired color ramp then click OK.