Latest Contributions by timdunlevie

Hi all,   We have an ArcGIS spatial database. It has roughly 70 Feature Classes. It was populated a few years back... I now want to clean the database up a bit and change various field names, re-order some of the fields, remove redundant fields. It's a simple gdb with no domains or other relationships....just a heap of FCs.   From reading there's no easy way to change the db schema ?   I'm thinking of exporting the SDE to .XML, do edits to the schema there...and somehow get the data back into the new schema??   Anyone had any experience doing this? And what is the best way to go about it ?   The other idea I had was to create new FCs and Append the old data to the new FC schema....   Thanks, Tim ... View more

Hi guys,   I'm using ArcGIS 10.2...and I'm getting some frustrating results using Model Builder to append data to a Feature Class within a FGDB.   I have 6 datasets (a mix of shapefiles and FC in a FGDB) The steps I perform in the model include: 1. add fields to these datasets 2. calculate fields 3. append to a "master" FC in a FGDB using schema type "NO_TEST" and field map the various fields from the input datasets to the Target.   for some reason the data is not appending correctly. The field mapping looks correct. I've deleted features from the Target FC (empty FC) and tried appending over again, yet the same (wrong) fields map to the target fc. is it holding this data in memory ??? Is MB always so buggy ?   many thanks, Tim ... View more

Hi all,   This is doing my head in...   I have a simple .CSV file: X (easting), Y (Northing), DataValue (e.g. 1.52E-26, 1.20E-21, 8.69E-22, etc..)   If I drag this file from Catalog it gives the DataValue field "double" format and makes all values zero.   I've tried using the excel to table tool, I've tried saving as a .txt file...no luck.   Opening this .csv file in MapInfo Professional works perfectly....i.e. holds all the mathematical values.   Why is ArcMap so difficult when it comes to a simple .csv file ?? Am I doing something wrong?   help?   thanks ... View more

Hi all,   I'm sure this has been asked before....   I have grid parameters of a local projection (Mine grid) based on the Map Grid of Australia:   Grid Name : Local Grid Central Scale Factor 1.000000 Origin Local Grid Easting 800,400.025 Origin Local Grid Northing 300,500 Origin MGA Zone 50 Easting (GDA94) 700,000.498m Origin MGA Zone 50 Northing (GDA94) 6,900,600.233m Orientation at Origin 31o24’43”MGA   Now to add a new grid these are the steps I am using: 1. Data Frame Properties 2. Coordinate system tab 3. New Projected coordinate system 4. Change Projection name from Transverse Mercator to "Local" 5. Enter the above parameters into the "Values" area, where: False Easting = Origin Local Grid Easting 800,400.025 False Northing = Origin Local Grid Northing 300,500 Scale Factor = 1.0000000 Azimuth = Orientation at Origin 31o24’43”MGA, but I put in decimal degrees of 31.411944 Longitude of center = Origin MGA Zone 50 Easting (GDA94) 700,000.498m - converted to Geographic coords and to decimal degrees (GDA94) Latitude of center = Origin MGA Zone 50 Northing (GDA94) 6,900,600.233m - converted to Geographic coords and to decimal degrees (GDA94)   Unit = meter Meters per unit = 1   Geographic Coordinate system = I changed this to the MGA Zone 50 (GDA94) grid...which the local grid is based on.   I don't seem to get real accurate results. The points are a fair way off where they should be.   Have I done everything correct ?   Thanks, Tim ... View more