topic calculate length with the filed calculator in model builder arcgis 10 in Python Questions https://community.esri.com/t5/python-questions/calculate-length-with-the-filed-calculator-in/m-p/441921#M34608 <HTML><HEAD></HEAD><BODY><SPAN>Hi, I try to use the calculator field to update a field that store lengths in a shapefile; I do this because I try to put the task in model builder. I use python under suggestion of what I read in the help and the syntax I read for this task is as follow: </SPAN><BR /><BR /><SPAN>!shape.length@kilometers!</SPAN><BR /><BR /><SPAN>I fill the text box of the field calculator with this line of code, but it`s return a syntax error.</SPAN><BR /><BR /><SPAN>Someone knows what it´s wrong ? I work under Windows XP, ArcGis 10, ArcEditor evaluation version.</SPAN><BR /><BR /><SPAN>Thanks</SPAN><BR /><BR /><SPAN>Virginia</SPAN></BODY></HTML> Sun, 08 May 2011 18:37:34 GMT Pía_ZenaidaVirginia 2011-05-08T18:37:34Z calculate length with the filed calculator in model builder arcgis 10 https://community.esri.com/t5/python-questions/calculate-length-with-the-filed-calculator-in/m-p/441921#M34608 <HTML><HEAD></HEAD><BODY><SPAN>Hi, I try to use the calculator field to update a field that store lengths in a shapefile; I do this because I try to put the task in model builder. I use python under suggestion of what I read in the help and the syntax I read for this task is as follow: </SPAN><BR /><BR /><SPAN>!shape.length@kilometers!</SPAN><BR /><BR /><SPAN>I fill the text box of the field calculator with this line of code, but it`s return a syntax error.</SPAN><BR /><BR /><SPAN>Someone knows what it´s wrong ? I work under Windows XP, ArcGis 10, ArcEditor evaluation version.</SPAN><BR /><BR /><SPAN>Thanks</SPAN><BR /><BR /><SPAN>Virginia</SPAN></BODY></HTML> Sun, 08 May 2011 18:37:34 GMT https://community.esri.com/t5/python-questions/calculate-length-with-the-filed-calculator-in/m-p/441921#M34608 Pía_ZenaidaVirginia 2011-05-08T18:37:34Z Re: calculate length with the filed calculator in model builder arcgis 10 https://community.esri.com/t5/python-questions/calculate-length-with-the-filed-calculator-in/m-p/441922#M34609 <HTML><HEAD></HEAD><BODY><SPAN>Hi, I solved the problem. </SPAN><BR /><BR /><SPAN>For others: </SPAN><BR /><BR /><SPAN>the syntax !shape.length@kilometers! is correct, but in the dialog box CALCULATE FIELD from Model Builder, you must change "Expression Type" from python 9.3 to "python" if you work with ArcGis 10.</SPAN><BR /><BR /><SPAN>Virginia</SPAN></BODY></HTML> Sun, 08 May 2011 20:03:27 GMT https://community.esri.com/t5/python-questions/calculate-length-with-the-filed-calculator-in/m-p/441922#M34609 Pía_ZenaidaVirginia 2011-05-08T20:03:27Z