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7

To close a multipatch feature, it must completely enclose a volume. Multipatch features created with the Interpolate multipatch to polygon (using a surface) tool can likely not be closed. (Unless you extrude between 2 TIN surfaces which should produce a closed multipatch. Personally, I have not had a lot of success using "Extrude Between" with complex ...


7

Any OpenGL card should work well, whether NVidia or AMD. This quote from ArcGIS Desktop Help, gives a basic discussion of what graphics card you should buy for 3D Analyst: Which graphics card should I buy? A good OpenGL-compliant graphics card with at least 64 MB of texture memory is recommended. Most desktop systems come equipped with power ...


6

You're not actually 'reprojecting' the data (the coordinate system, that is), you're simply multiplying it by a constant (as in the 'times' tool in ArcGIS) to change the pixel values from one number to another, so you can use the QGIS Raster Calculator to do this.


5

I think in the end i will stay with the USGS Envison system. Their stand visualization system in fact has a geographical component, but prior to the visualization you have to format your data locations corresponding to your plot size. First create a tbl file with the following parameter (From the Tbl2svs help) The following example shows a stand ...


5

You can build a terrain dataset from points or lines as well as ASCII grids. No need to convert to LAS points, all you need is a multipoint feature class (which can be created from any of the above).


4

Check out the NVS Vector Stream Tool which ... is a user-friendly ArcCatalog (9.3.x) Toolbox geoprocessing tool which simply assigns a numeric order to segments of a poly line feature class. Unlike the Spatial Analyst Tools for Hydrography, this tool solely uses vector stream data instead of raster stream data accompanied by a flow direction ...


4

From my experience (also not a remote sensing expert), it's very hard to get accurate building outlines. If it is not a huge area, it might be worth manually tracing the buildings and then doing a spatial join with the LIDAR data to get the building heights.


4

You can try the Virtual Terrain Project. The goal of VTP is to foster the creation of tools for easily constructing any part of the real world in interactive, 3D digital form. This goal will require a synergetic convergence of the fields of CAD, GIS, visual simulation, surveying and remote sensing. VTP gathers information and tracks progress ...


4

Spatial Analyst is a module within arcpy which allows the from _ import * syntax. 3D is not a module so you can't import it that way.


4

First you need to enable the extension (if you have the license for this): Create TIN (3D Analyst) http://resources.arcgis.com/en/help/main/10.2/index.html#//00q90000001v000000 You can search for this:


4

you can do this with the raster calculator, but probably not as easy as a sum because you probably have NoData values where there is no forest . In this case, here is a more robust method : Con(IsNull("converted_polygon"), "DEM", "DEM" + "converted_polygon" )


4

If your application is running inside of ArcGIS your product license should handle the activation of extensions for you. Failing that you can always use ArcObjects to check out the required extensions. How to use extensions (ArcObjects) Extensions provide additional functionality to applications. Before using the functionality provided in an ...


4

Perhaps one of these two methods will work for you: ArcMAP Select by Location 3D relationships and ArcScene Select by 3D Box How about Inside 3D (3D Analyst)? Since the output of Extrude Between is a feature class with multipatch 3D features, can you use this tool to identify the 3D Point features which are within the resulting soil horizons? Can you ...


3

According to the ArcGIS Resource Center the tool: Tests each multipatch to see if it completely encloses a volume. Then adds a new field with a flag for each multipatch feature in the input layer or feature class indicating if that feature is closed or not. It could be that changing the order of the vertices closes the volume while others don't and ...


3

The only way we found to get a triangular mesh with existing topology into ArcGIS was to use the arcpy.LandXMLToTin_3d function. It's a bit crazy to have to write out a LandXML file just to get your TIN into Arc, but it works. Here is a Python Toolbox for ArcGIS10.1 that accesses data on a triangular mesh from an ocean model, and brings it into ArcGIS as a ...


3

When features are added to a TIN, there needs to be some way to define where their heights come from. If you are inputting 3D features, you can specify the Shape field as the height source. This indicates the z-values will be taken directly from the feature geometry. When adding 2D features, you can reference a numeric field. You can also specify None, in ...


3

Canadian Hydrographic Service may be your only choice, I'm afraid. LIO is supposed to have line and point bathymetry data, but their login and search tools are going off into hyperspace for me right now. My friend was lucky in that the lakes he was interested in had just had a very detailed survey in advance of the G8, and CHS (apparently) don't maintain ...


3

Work with "Terrain" in ArcGIS instead of standard TIN. Then you will have the option of saving several "resolutions" and your rendering will be less of a problem. When zooming out, it will show a rough resolution, when zooming in, the resolution will increase. http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//005v00000002000000.htm.


3

If you do not care about what happens between your two ends (not that this is dangerous for long roads in hilly regions), here are the steps : 1) feature vertices to points (ask for START and for END) 2) extract values to points (for both sets of points, don't forget to check the "interpolate" box) 3) join by attributes (based on ID) the starts and the ...


3

I would use this approach: Add flood deep to DTM to create a new surface raster (use Plus (3D Analyst) tool). Drape the flood raster to the new surface.


3

I had the same problem using some SRTM DEMs. Besides from using some later and more correct version or another data source, I'd recommend setting all values below some chosen threshold (that will only select the hole pixels) to NoData (=erase them) and then re-interpolating them according to the surrounding pixels so that there will at least be no excesses.


3

It is possible to turn borehole logs (XYZ points) into 3D polylines. I wrote a sript a few years ago that did just that but it was with ArcObjects. Each group of points had a unique value and I just looped and constructed 3D lines using the points as ToPoint and FromPoint and assigned soil type attribute to each line. Once complete I symbolized on soil type ...


2

http://edndoc.esri.com/arcobjects/9.2/java/api/arcobjects/com/esri/arcgis/globecore/IGlobeViewUtilProxy.html#queryVisibleGeographicExtent%28com.esri.arcgis.geometry.IEnvelope%29 There's the answer. QueryVisibleGeographicExtent - pass in an empty Envelope Class and it returns the extent.


2

Shading for TINs is a hillshade illumination option on the Layer Properties dialog box, Symbology tab. Shading can be enabled individually for each layer in the ArcScene document. Though ArcScene is the not the best 3D Software to work with with 3D rendering.


2

Assuming you have a polyline feature class with line segments you can use the following code in the field calculator. In the pre-logic box Dim pPolyline as IPolyline set pPolyline = [Shape] In the below text box you can use one of the three following lines depending on wich Z value you want. From point pPolyline.FromPoint.Z To point ...


2

I have successfully used FME in the past to do this type of conversion. I can't remember if there were any other quirks to the translation, but if you've never used it before you would essentially just add the appropriate readers and writers, hook them up and see if it works. In my case I was converting from Google Earth (KMZ) files, which use COLLADA ...


2

There's a cloud-based solution at GaiaStudio -- still in prototype, but worth a look.


2

Bioshere 3D sounds like it may have the functionality you need. There is a tutorial titled Biosphere3D Tutorial on the Visualization of Forest Stands in British Columbia, where they state: Biosphere3D is an open source digital globe that is specialized on the realistic representation of vegetation. In contrast to GoogleEarth, it is open source and ...


2

The most basic method to calculate the change in DEM volume for each pixel is v = (DEM2 - DEM1) * A, where A is the pixel area. The total volume change is the sum of all resulting pixel values. It seems to me that method 2 does exact the same thing. If it didn't work with any of the three methods, then you should consider changing your tool for this ...


2

If you have access to the 3D Analyst extension, it's possible to get a two dimensional polygon of the multipatch with the Multipatch Footprint tool. From there, you could use the Feature to Point tool (ArcInfo aka Advanced license) or Calculate Field tool to get the centroids of the polygons.



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