Latest Contributions by NeilAyres

Can you show us what your Lat/Longs look like please ... View more

Those variables minval, minfld‍ should of course be named maxval, maxfld‍ for clarity. ... View more

The clue seems to be the datum reference in the AIR.prj. ArcGIS does not recognise this as a proper datum reference : ... View more

I don't know of an existing tool to do this. You may want to try a little python, like this (btw completely untested) import arcpy pathtodata = r"c:/some/path/to/data/db.fgb/mydata" flds = ["field1", "field2", "field3"] with arcpy.da.SearchCursor(pathtodata, flds) as Cur: for row in Cur: minval = -9999999 minfld = None for v in range(len(flds)): if row[v] > minval: minval = row[v] minfld = flds[v] print "Fld {} min {}".format(minfld, minval)‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ ... View more

I have seen many projects in the past which contain thousands of shapefiles, which actually should be consolidated into one feature with an attribute indicating what is what. ... View more

Perhaps the real question here is "why would you do that?". Very strange. ... View more

By using the little envelope thingy at the side to directly navigate to the actual feature in its fgdb or where ever it is. Not just picking it from the layer list. ... View more

Melita, well yes, you can "georeference" the CAD, much like you would with an image. But, I think, first choice would be to get to the truth. Especially regarding the underlying datum. If that step proves to be impossible, then, yes, go ahead. I have Margaret Maher's book thank you. Also, done lots of work fiddling with RSO etc etc. Cheers, Neil ... View more

You could save it to the scratch fgdb. see the value of env.scratchGDB ... View more

Unfortunately, you cannot go from an unknown to a known. You must find out more about the real coordinate system from those CAD files, then define your shapefiles appropriately. Then you can re-project, change the base datum etc etc. ... View more

That looks like a slightly non-standard definition of GCS_WGS_1984. That why Arc cannot find the appropriate transformation. You should redefine it using the properties in Catalog. ... View more

Did you build and run the model from within ArcMap? ie by adding the required layer from the TOC pulldown? Once the code is in python there is no way that the code knows where PC6 = "Postcodevlakken PC 6\\PC6" is actually on your local storage. ... View more

"Then, I fixed the coordinate system..." How did you fix it? Project I hope rather than just defining a different coord sys. ... View more

Are the polygons all separate with no overlaps? If they do overlap, you may need to Union the polygons first. ... View more

Are you trying to count the number of points within each polygon? A spatial join of the polygons to the points should give you a table which can then be summarised by the polygon id (whatever that might be). Spatial Join—Help | ArcGIS Desktop  Summarizing data in a table—Help | ArcGIS Desktop     ... View more