Trying to calculate length in ArcGIS 10, Service Pack 3 on Windows 7. Used Calculate Geometry sucessfully to calculate the XY end coordinates of the lines in a 400, 000+ record dbase file. Then used the tool 'XY to Line' to produce a resultant file. Added a field called Distance (data type double) to the result file. Right click on 'Distance', scrolled to Calculate Geometry. The top dropdown box showed Length-Disabled. This procedure worked for a file with 4 records. I found the procedure at this link: http://kb.mit.edu/confluence/pages/viewpage.action?pageId=11338190 Had some problems until I got a Unique ID for all the records but after that still got Length -Disabled.
The procedure is correct; however, your data is using a Geographic Coordinate System for which length cannot be calculated as the calculation use a planimetric algorithm. You will need to use a Projected Coordinate System.
The procedure is correct; however, your data is using a Geographic Coordinate System for which length cannot be calculated as the calculation use a planimetric algorithm. You will need to use a Projected Coordinate System.
