Necesito calcular automáticamente un campo basado en los valores de filas anteriores

OLANIYANOLAKUNLE

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Necesito calcular automáticamente un campo basado en los valores de filas anteriores de tal manera que una vez que el total de todas las filas anteriores sea mayor que 450 y menor que 500, la siguiente fila comience a contar desde 0 o el saldo de lo que hizo que la fila anterior fuera mayor que 500, he podido incluir mi fórmula pero funciona dentro de una sola fila, es decir (${No of Persons in Sampled Building} + ${Estimated No of Persons in Residential Building}) el resultado haría que el valor para el campo llamado Estimated Population  <\/P><\/BODY><\/HTML>

eric3918esridot

Olaniyan,

I want to make sure I understand your question.  You have a survey question (field/column) and you want to automatically calculate the value of that column based on the answers of previously submitted surveys (rows)?  To my knowledge Survey 123 does not support reaching back into the feature service to pull out previous surveys and sum the values of a field.  This is due to the fact that Survey123 is working in an offline state storing the surveys until you upload the results. 

I can reach back into previous questions in the current survey.  So if your survey has three questions, Number of persons sampled building , and number of persons in residential building I can sum those values and pre-populate the third question called estimated population and hide it from  the survey. 

So my question to you are you trying to do this the first way or the second way.  To do this the second way,  refer to this link which explains how to create a calculation from previous questions using the XLSforms Calculation Column... Survey123 for ArcGIS support for XLSForm