display 3d soil sample data?

[C_J_Roebuck]

I have:
1. arcview with 3d extension
2. aerial and DEM of area
3. point shapefile with XY, elevations, depths, concentrations. For each depth i'm keeping Z=elevation. But i think it should be z=elevation - depth to show distinct points for each sample.

What i need is similar to the tutorial exercise 2 i believe. We took soil samples at different depths at the same location throughout the area. I want to be able to display the concentration values at the different depths. For instance some locations have high levels near surface (-1ft) and some have high levels further (-6ft).

In the example they show 3d mountain like views for elevation and then draped the concentration plume on top. I cant figure out how to do this. The furthest i got is creating peaks for the concentrations using the feature to 3d and IDW tools (exercise 4 i believe) and then extruding the point file to show bars as depths.

Is it possible to create the same thing as tutorial because i'm out of ideas?

[DewiJones]

Hi there,

If you want to drape your concetration data over the tin (elevation bits), simply go into the properties and select the base heights tab and click floating on a custom surface, in the elevation from surfaces section, then you can select your tin.

With regard to concentrations, wasnt too sure if your data was from a single point or if you dug a number of sample locations? If it is multiple, you could generate surfaces for different depths, so you would have a excel sheet for 1ft and add all you data across the field. You can then import these and perform kriging from the geostatistical analysis and it will generate a surface showing your changes in concentration across you sample area. I can explain this in more detail if it would be useful?

Cheers