Calculat Geometry->Length Disabled

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01-09-2012 04:26 PM
BillAlfred
New Contributor
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.

Any help will be sincerely appreciated!
Please respond to: Bill.Alfred@med.fsu.edu.

Happy New Year,
Bill Alfred, MS, GISP
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Accepted Solutions
TimothyHales
Esri Notable Contributor
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.

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TimothyHales
Esri Notable Contributor
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.
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