Latest Contributions by DanPatterson_Retired

You create constant rasters using the Constant Raster Tool ... View more

Is the tiff file an integer file? ... View more

Not bad for a first crack!!!  See Ian's example below ... View more

Have you read the sections and seen the code examples in the "cursors" sections of the help file?  There are search cursors update cursors.  Other sections on fields, queries etc. and their code examples will get you off to a good start.  Also examining code snippets produced by other individuals, if you can find them on this site, will also serve you well. ... View more

Can you provide an example comparison so that people don't have to try it themselves? ... View more

Don't see an attachment...anyway any elevations that seem spurious are most likely cloud reflectance, for example, if the elevations in your area are all less than 1000m and you are getting values of 2000+m then these values are probably in error...the higher the value, the more likely they are due to reflectance issues ... View more

Perhaps they are testing it online prior to releasing it widely. ... View more

you could simply add fields to the existing tables that reflect the pairing you want.  There is an example towards the bottom of this help file link called autoincrement and you can adjust the start number accordingly between the two files. ... View more

There is no specific tool, however, the spatial analyst extension has a variety of tools that can be used.  There are questions that need to be answered.  These gaps etc, are they truly nodata values or are they areas of cloud reflectance?  Have you examined the statistics for the dataset? ... View more

grasping too...if it is a esri grid output, does the path and grid name conform to convention? (ie no spaces < 13 characters in name length, path contains a space etc etc) ... View more

My usage of this tool is to specifically add appropriate fields to the observer points containing the required information...You can glean what is needed from the inputs to the tool and by the code sample towards the end...several of the inputs are fields... ... View more

According to the first line of the help thread I forwarded... "A viewshed identifies the cells in an input raster that can be seen from one or more observation locations." it shouldn't.  Are your field names correctly named in the source file? ... View more

One last try...I doubt that your cell size is 100 miles wide, hence, your estimate of area is incorrect.  Examine the units of your raster...depending upon the source, I suspect that they are either in meters or feet...this information can be found in arccatalog amongst other places.  The units that you set the data frame in are not relevant and I would strongly suggest setting them to anything other than native units.  So when you find out what units the raster is in, the area will either be 10,000 square meters or 10,000 square feet...both of which can be converted to square miles using an online calculator.  Good luck again ... View more

could you simplify your title please ... View more