Latest Contributions by JeffreySwain

The checkerboard appears usually when you have either not generated overviews or lost access to the overviews or source rasters.  What does it look like in ArcMap when you look at the raster prior to exporting? ... View more

The raster must be a classified into two colors, per the help on ArcScan.  You cannot use it to edit a 3 band RGB raster if that is the color one you have. ... View more

If you need a SID then refer to GeoExpress from Lizard Tech directly.  You could output to a Tiff with YcbCR compression have some of the compression. ... View more

Raster Painting would work if you had two values as you would for ArcScan, but since you sound like that is not what you want, you might consider the workflow for how to use the Con Statement to alter the value for just those select ones. ... View more

If you are having issues with the output of an Esri GRID, then by all means, add a .tif or .img to see if that solves it. Sometimes Esri GRIDs can be stripped by Network Security on specific networks, although I have never been able to reproduce it locally. ... View more

In the Results window, what is the exact syntax that is being run?  Can you post that?  Also is 'dem0' in the map document?  It seems to be that it cannot resolve the naming of the raster.  Also can you run the script in segments?  Will the IsNull work on it's own?  Focal Stats? ... View more

I would make the viewshed use the elevation raster as the base heights for the 3d look. ... View more

It all depends on your comfort level with SDE permissions and your desired product.  The mosaic dataset seems will work in either medium.  If you plan on publishing the mosaic dataset the normal permission issues are necessary to see the data and if you create the overviews in the SDE, then Server will need permission to access the database.  There are also some performance issues at this point with SDE, where the file based version will be quicker.  Also pay attention on the same help document, the requirements to make the data accessible. Per help, ArcSDE geodatabases are convenient and powerful, but often don't yield as fast of performance as you would see when accessing the data locally. ... View more

What is your DEM bit depth?  If it is not 32 bit float then that is the issue.  The Interpolate Shape tool will only reflect the values of the DEM with regards to the z values.  If you have an integer raster, then the values will be integer. ... View more

For your raster, what is the value set for the NoData in the source properties?  Also is your raster an irregular shape?  If so, then there will be extra pixels added to the created raster to make it square.  Also as a courtesy, the program will usually add one pixel around the outside to avoid losing data.  The default behavior in ArcMap is to provide ways to handle the display of NoData, not necessarily eliminate it entirely. ... View more

I am glad that the TIN was able to display it in a manner you liked. Also as you pointed out, in the absence of data, it will get weird in places.  So the tools originally mentioned are better adapted to resolve the lack of data and smooth it out, ie Topo to Raster.  For your requirement of having the contours followed precisely, there are some trade offs. Best of luck with your analysis. ... View more

Why not use the Reclassify tool to create the different classes in a raster of the same cell size. Then you can build the raster attribute table and obtain the number of cells there. ... View more

All you need is access to 10 or 10.1 and the ArcEditor or Standard license. The Image Server Extension only comes into play when you want to publish the mosaic dataset. ... View more

Is your raster 18 gigs for the uncompressed size or 18 gigs on disk?  Generally speaking, ecws are highly compressed and are much larger when it comes to uncompressed size. You can attempt the Split Raster tool, but bear in mind you will most likely be processing it a long time and it will take up a considerable amount of space. ... View more