topic Passing Field Value as input to Double Variable in Geoprocessing Questions https://community.esri.com/t5/geoprocessing-questions/passing-field-value-as-input-to-double-variable/m-p/420434#M14161 <HTML><HEAD></HEAD><BODY><SPAN>I'm tyring to use the stats calculated on my DEM to determine the Stream Threshold for the Arc Hydro tool - Stream Definition. The defualt value is 5000 cells. The prefered value for Stream Definition - Threshold is 0.5% of the Maximum cells. I have created a model that builds raster attributes, sumarises statistics and based on the maximum value calculate 0.5%. The value is currently stored in a table within a file geodatabase. I have created a double variable and selected it as a list which allows me to select the input value to be taken from a table, once I've chosen the stats table it asks what field, where I select the Threshold. The value that I'm trying to use is visible, yet when I try to use inline-variable substitution the input double variable found in Arc Hydro - Stream Definition won't accept inline variable substitution. If anyone can assist in how to solve this or a better aproach in calculating the threshold as being 0.5% of the maximum values of Flow Accumulation Grid. I'm tyring to automate Terrain Preprocessing to batch process an entire continent.</SPAN><BR /><BR /><SPAN>Regards</SPAN></BODY></HTML> Sun, 17 Oct 2010 15:01:02 GMT PeterWilson 2010-10-17T15:01:02Z Passing Field Value as input to Double Variable https://community.esri.com/t5/geoprocessing-questions/passing-field-value-as-input-to-double-variable/m-p/420434#M14161 <HTML><HEAD></HEAD><BODY><SPAN>I'm tyring to use the stats calculated on my DEM to determine the Stream Threshold for the Arc Hydro tool - Stream Definition. The defualt value is 5000 cells. The prefered value for Stream Definition - Threshold is 0.5% of the Maximum cells. I have created a model that builds raster attributes, sumarises statistics and based on the maximum value calculate 0.5%. The value is currently stored in a table within a file geodatabase. I have created a double variable and selected it as a list which allows me to select the input value to be taken from a table, once I've chosen the stats table it asks what field, where I select the Threshold. The value that I'm trying to use is visible, yet when I try to use inline-variable substitution the input double variable found in Arc Hydro - Stream Definition won't accept inline variable substitution. If anyone can assist in how to solve this or a better aproach in calculating the threshold as being 0.5% of the maximum values of Flow Accumulation Grid. I'm tyring to automate Terrain Preprocessing to batch process an entire continent.</SPAN><BR /><BR /><SPAN>Regards</SPAN></BODY></HTML> Sun, 17 Oct 2010 15:01:02 GMT https://community.esri.com/t5/geoprocessing-questions/passing-field-value-as-input-to-double-variable/m-p/420434#M14161 PeterWilson 2010-10-17T15:01:02Z