topic Re: Shape_Length correction in ArcGIS Pro Questions https://community.esri.com/t5/arcgis-pro-questions/shape-length-correction/m-p/390035#M17232 <HTML><HEAD></HEAD><BODY><P>Shape_length will be in the units of the geometry, which in your case is in decimal degrees.&nbsp; The Add Geometry tool should do it if you indeed have a line feature class...<A href="http://pro.arcgis.com/en/pro-app/tool-reference/data-management/add-geometry-attributes.htm">calculate them in projected coordinates using the </A>.&nbsp; Alternately, you can add a field directly and <A href="https://pro.arcgis.com/en/pro-app/tool-reference/data-management/calculate-field-examples.htm">calculate the length directly </A>using projected units if your map is set to an appropriate projection </P></BODY></HTML> Sat, 18 Mar 2017 17:41:28 GMT DanPatterson_Retired 2017-03-18T17:41:28Z Shape_Length correction https://community.esri.com/t5/arcgis-pro-questions/shape-length-correction/m-p/390034#M17231 <HTML><HEAD></HEAD><BODY><P>I'm having an issue with my Shape_Length field produced from the points to line tool. I have 23 sets of GPS locations that I converted into lines. I want to produce a field with the length in kilometers of each 23 polylines. My issue (at least from what I understand) is that the field is automatically generating a field based on the maps geometry, and producing numbers far below what I expect. I'm not sure what to change to get a Shape_Length field in kilometers. The map coordinate system and the system for each feature class is GCS WGS 1984.</P><P></P><P>I also tried adding a length field with the Add Geometry Attributes tool, but Length is not listed in the Geometry Properties drop-down menu.</P><P></P><P>I could either use help with knowing how what the unit conversion to kilometer is (if there even is one) or what to change to tell my feature I want kilometers.</P><P></P><P>I'm at the point where I've been scouring the internet and the software so long that I may probably missed something obvious and need to take the weekend to clear my head... Any help is appreciated!</P></BODY></HTML> Sat, 18 Mar 2017 17:31:57 GMT https://community.esri.com/t5/arcgis-pro-questions/shape-length-correction/m-p/390034#M17231 BJAdams 2017-03-18T17:31:57Z Re: Shape_Length correction https://community.esri.com/t5/arcgis-pro-questions/shape-length-correction/m-p/390035#M17232 <HTML><HEAD></HEAD><BODY><P>Shape_length will be in the units of the geometry, which in your case is in decimal degrees.&nbsp; The Add Geometry tool should do it if you indeed have a line feature class...<A href="http://pro.arcgis.com/en/pro-app/tool-reference/data-management/add-geometry-attributes.htm">calculate them in projected coordinates using the </A>.&nbsp; Alternately, you can add a field directly and <A href="https://pro.arcgis.com/en/pro-app/tool-reference/data-management/calculate-field-examples.htm">calculate the length directly </A>using projected units if your map is set to an appropriate projection </P></BODY></HTML> Sat, 18 Mar 2017 17:41:28 GMT https://community.esri.com/t5/arcgis-pro-questions/shape-length-correction/m-p/390035#M17232 DanPatterson_Retired 2017-03-18T17:41:28Z