Latest Contributions by NeilAyres

It depends where is your study area. But generally you will need a dem (digital elevation model) from which slope and aspect can be derived. A common source is the aster dem. Widely available for download. Do you have spatial analyst? ... View more

Oh, and thanks for those links btw. ... View more

Yes, I agree. Publishing with Image Server isn't necessary for background imagery. Probably a published tile cache is the way to go for speed purposes. ... View more

Firstly, use the advanced editor and the highlight python syntax -Click on that button which looks like ">>". That would make your code easier to read. Any errors messages? Have you tried getting rid of the try/except blocks to see if it just errors out somewhere? When you look at the data in the table, is "CONFIDENCEVALUE" how you expect it? Numeric? ... View more

What Melita is saying that that you should have only changed the underlying GCS of your existing coordinate system, scoot down using the arrow to the bottom half of the edit window. (picture 2 below). ... View more

10.3.1 on Win7 64bit ... View more

Ditto, works wonderfully. That is an amazing resource you have there in NJ. ... View more

And, if this data is coming from CAD..... Run a mile. ... View more

Be interesting to hear the feedback from that exercise. ... View more

"We will create our own network dataset" Easier said than done.... ... View more

I have used access as a data store with tables over 1mill rows. One has to be aware of the mdb file size limit as mentioned by Curtis. But, create a new mdb, import one or more data tables into to it. Then build a make table query and add only those fields you need. That way, you still have all the original data, and you have some data you can use in ArcMap. ... View more

Could you give us a clue as to why you would want to do this? It sounds like a strange requirement, especially the truncation rather than rounding. If you have some experience with python, you could read the existing polygon geometries and write out another set of coordinates which have been truncated to the precision you require. ... View more

Export to pdf seems to default to making a multipage pdf. So, don't change the filename in the loop. ... View more

When doing something similar I found it necessary to check disjoint & touching... # if not disjoint and not touching, must intersect if not geom1.disjoint(geom2) and not geom1.touches(geom2): ... View more

And if you want all the history of survey in Honduras, se Clifford Mugnier's Grids & Datums from ASPRS. ... View more