Latest Contributions by EricRice

Let's back up a moment. What are your steps, and how have you determined it doesn't work? All you have to do for the steepest path button to work, is click a point on the map and it will draw a line graphic as the result. The surface to use should be the active layer on the 3d toolbar. You're not getting any graphics?  What version are you using, including any SP's? Best, Eric ... View more

If the data is in GCS_WGS_1984 you will find the cell sizes in the properties to be a little confusing, as well as having quite small values.  This is because the units are in decimal degrees, not meters/feet.  For example, I have some 30m ASTER data for the world, but when I check the properties the cell size is 0.00027777778, which is due to the data being in GCS. If you plan on analyzing the dem, you should project it such that the linear units are the same as the vertical units so that X, Y, and Z are consistent, otherwise expect to be calculating Z factors and using them when appropriate. Note that Z factors change with latitude so if your extent is very large a single Z factor won't cut it. When projecting a dem, do not accept the default resampling in the Project Raster tool.  Switch it to bilinear to save yourself some headaches down the road.  Nearest resampling is not meant for a dem. Best, Eric ... View more

Can you describe why it's not working?  Perhaps, the lines are very short...  Is your DEM hydro conditioned and/or does it have sinks filled? Best, Eric ... View more

See the Generate Near Table tool. Best, Eric ... View more

GRID can be written to any network location as long as you have permission to write there.  Not that someone shouldn't figure out why you can't write GRID's to your location, but if Tiff is working for you, why do you need the Esri GRID format?  Tiff works with a lot more applications than our proprietary format GRID. -Eric ... View more

Trevor, See Iterate Feature Selection.  Also, see An overview of the Iterator toolset. Best, Eric ... View more

I don't believe it's part of the template.  Just some guys upstairs playing around with our capabilities, nothing official.  That doesn't mean you can't do it though. Eric ... View more

Set the Extent in the Environment Settings to something larger than the input point extent when you run the tool. ... View more

Sam, What is it exactly that you want to calculate? There are a number of good tools in the 3D toolbox that could get you going depending on your needs. Attached is a screenshot of the city lights in Philadelphia from our Virtual City Template. It�??s just point features symbolized with semi-transparent spheres based on the approximate illumination distance of each streetlight. You can intersect that sphere with stuff (eg: the ground in a public space) to calculate the area of effective light coverage, for example. Best, Eric ... View more

Greetings, I strongly encourage you to read this two part blog discussing pyramids/overviews. Overviews and pyramids: Part 1 of 2, What are they and why do I need them? Overviews and pyramids: Part 2 of 2, Doesn�??t my mosaic dataset use both? Best, Eric ... View more

Can you clarify what your concerns are? Best, Eric ... View more

David, You probably didn't use an inline variable for the output raster, which is why it was overwriting. See, Examples of inline model variable substitution, specifically Ex 2. Best, Eric ... View more

You're on the right track there.  Also, you could just run the Times tool. Best, Eric ... View more

See, Extracting cell values to point features Best, Eric ... View more