topic Re: How do I replace the first character of a string using calculate field in ArcGIS Pro? in ArcGIS Pro Questions https://community.esri.com/t5/arcgis-pro-questions/how-do-i-replace-the-first-character-of-a-string/m-p/731958#M32170 <HTML><HEAD></HEAD><BODY><P>Although you asked a follow-up question, Dan addressed your first question.&nbsp; Please mark his response as Correct to close out the question.</P></BODY></HTML> Tue, 28 Jul 2020 18:08:57 GMT JoshuaBixby 2020-07-28T18:08:57Z How do I replace the first character of a string using calculate field in ArcGIS Pro? https://community.esri.com/t5/arcgis-pro-questions/how-do-i-replace-the-first-character-of-a-string/m-p/731955#M32167 <HTML><HEAD></HEAD><BODY><P>Pretty simple question I'm sure for the Python people out there. I have a field, FACILITY ID, that is populated as string values as 00001,00002, 00003, and so on. All values in the field are 5 characters long. I want to change the first number in to a 1 so the values of the field look like 10001, 10002, 10003, etc. I'm pretty sure i should use the .replace(), but I cannot format it correctly. Any advice would be very welcome. Thank you.</P></BODY></HTML> Tue, 28 Jul 2020 16:25:54 GMT https://community.esri.com/t5/arcgis-pro-questions/how-do-i-replace-the-first-character-of-a-string/m-p/731955#M32167 JoeLivoti 2020-07-28T16:25:54Z Re: How do I replace the first character of a string using calculate field in ArcGIS Pro? https://community.esri.com/t5/arcgis-pro-questions/how-do-i-replace-the-first-character-of-a-string/m-p/731956#M32168 <HTML><HEAD></HEAD><BODY><PRE class="language-python line-numbers"><CODE><SPAN class="string token">"1"</SPAN> <SPAN class="operator token">+</SPAN> !YourField!<SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">:</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN></SPAN></CODE></PRE><P>python parser and YourField is the field that contains the original.</P><P>It is best to do calculations in a new field in case things go real bad.</P><P>You can copy them back into the original later</P></BODY></HTML> Tue, 28 Jul 2020 16:30:24 GMT https://community.esri.com/t5/arcgis-pro-questions/how-do-i-replace-the-first-character-of-a-string/m-p/731956#M32168 DanPatterson 2020-07-28T16:30:24Z Re: How do I replace the first character of a string using calculate field in ArcGIS Pro? https://community.esri.com/t5/arcgis-pro-questions/how-do-i-replace-the-first-character-of-a-string/m-p/731957#M32169 <HTML><HEAD></HEAD><BODY><P>Dan,</P><P>Thank you that worked perfect. How would I augment that to change a different value in the string, say the second value to a 5? Again thank you!!!!</P></BODY></HTML> Tue, 28 Jul 2020 18:00:39 GMT https://community.esri.com/t5/arcgis-pro-questions/how-do-i-replace-the-first-character-of-a-string/m-p/731957#M32169 JoeLivoti 2020-07-28T18:00:39Z Re: How do I replace the first character of a string using calculate field in ArcGIS Pro? https://community.esri.com/t5/arcgis-pro-questions/how-do-i-replace-the-first-character-of-a-string/m-p/731958#M32170 <HTML><HEAD></HEAD><BODY><P>Although you asked a follow-up question, Dan addressed your first question.&nbsp; Please mark his response as Correct to close out the question.</P></BODY></HTML> Tue, 28 Jul 2020 18:08:57 GMT https://community.esri.com/t5/arcgis-pro-questions/how-do-i-replace-the-first-character-of-a-string/m-p/731958#M32170 JoshuaBixby 2020-07-28T18:08:57Z Re: How do I replace the first character of a string using calculate field in ArcGIS Pro? https://community.esri.com/t5/arcgis-pro-questions/how-do-i-replace-the-first-character-of-a-string/m-p/731959#M32171 <HTML><HEAD></HEAD><BODY><PRE class="" style="color: #000000; background: #f5f2f0; border: 0px; margin: 0.5em 0px; padding: 1em 1em 1em 3.8em;"><CODE style="border: 0px; font-weight: inherit;"><SPAN class="" style="color: #669900; border: 0px; font-weight: inherit;">"15"</SPAN><SPAN style="color: #000000;"> </SPAN><SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">+</SPAN><SPAN style="color: #000000;"> !YourField!</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">[</SPAN><SPAN style="border: 0px; color: #990000; font-weight: inherit; ">2</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">:</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">]</SPAN></CODE></PRE><P>or if you just mean the 2nd value, leaving the first along</P><P></P><PRE class="" style="color: #000000; background: #f5f2f0; border: 0px; margin: 0.5em 0px; padding: 1em 1em 1em 3.8em;"><CODE style="border: 0px; font-weight: inherit;"><CODE style="border: 0px; font-weight: inherit;"><SPAN style="color: #000000;">!YourField!</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">[</SPAN><SPAN style="border: 0px; color: #990000; font-weight: inherit; ">:1</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">] + "5" +</SPAN></CODE></CODE>!YourField!<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">[</SPAN><SPAN style="border: 0px; color: #990000; font-weight: inherit; ">2</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">:</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">]</SPAN></PRE></BODY></HTML> Tue, 28 Jul 2020 19:36:03 GMT https://community.esri.com/t5/arcgis-pro-questions/how-do-i-replace-the-first-character-of-a-string/m-p/731959#M32171 DanPatterson 2020-07-28T19:36:03Z Re: How do I replace the first character of a string using calculate field in ArcGIS Pro? https://community.esri.com/t5/arcgis-pro-questions/how-do-i-replace-the-first-character-of-a-string/m-p/731960#M32172 <HTML><HEAD></HEAD><BODY><P>Thank you Dan!! The second one was exactly what i needed!</P></BODY></HTML> Wed, 29 Jul 2020 11:07:34 GMT https://community.esri.com/t5/arcgis-pro-questions/how-do-i-replace-the-first-character-of-a-string/m-p/731960#M32172 JoeLivoti 2020-07-29T11:07:34Z Re: How do I replace the first character of a string using calculate field in ArcGIS Pro? https://community.esri.com/t5/arcgis-pro-questions/how-do-i-replace-the-first-character-of-a-string/m-p/731961#M32173 <HTML><HEAD></HEAD><BODY><P>no problem</P></BODY></HTML> Wed, 29 Jul 2020 15:46:02 GMT https://community.esri.com/t5/arcgis-pro-questions/how-do-i-replace-the-first-character-of-a-string/m-p/731961#M32173 DanPatterson 2020-07-29T15:46:02Z