topic Truncate raster values in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/truncate-raster-values/m-p/32689#M435 <HTML><HEAD></HEAD><BODY><P>Hello everyone, im searching for an answer to my question. I have a banch of satelite images and ive been doing some regression calculations between the digital numbers of the images. So when i apply the coefficients of regression equations to each image the new calculated digital number values are run over or below the original DN values ( original data range values is 0-63). So I am looking for a function or a geo tool or something to truncate the calculated values to origidal DN range. One way i guess is by using the reclassify tool but it may take too long beacause there are a lot of images. One other way i found somewhere is by using a formula like: DNnew * 63/DNnew_max value but applying this formula i dont actually get what i want since not all the new calculated values that run over 63 are truncated back to 63.</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>If someone can suggest a way to help me i would be very greatfull! Many thanks, and excuse me for any mistakes because english is not my native language.</P></BODY></HTML> Wed, 27 Aug 2014 16:13:20 GMT JimKld 2014-08-27T16:13:20Z Truncate raster values https://community.esri.com/t5/arcgis-spatial-analyst-questions/truncate-raster-values/m-p/32689#M435 <HTML><HEAD></HEAD><BODY><P>Hello everyone, im searching for an answer to my question. I have a banch of satelite images and ive been doing some regression calculations between the digital numbers of the images. So when i apply the coefficients of regression equations to each image the new calculated digital number values are run over or below the original DN values ( original data range values is 0-63). So I am looking for a function or a geo tool or something to truncate the calculated values to origidal DN range. One way i guess is by using the reclassify tool but it may take too long beacause there are a lot of images. One other way i found somewhere is by using a formula like: DNnew * 63/DNnew_max value but applying this formula i dont actually get what i want since not all the new calculated values that run over 63 are truncated back to 63.</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>If someone can suggest a way to help me i would be very greatfull! Many thanks, and excuse me for any mistakes because english is not my native language.</P></BODY></HTML> Wed, 27 Aug 2014 16:13:20 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/truncate-raster-values/m-p/32689#M435 JimKld 2014-08-27T16:13:20Z