I am trying to replace all the cell values in raster 'acc_log_norm' that are equal to zero with the corresponding cell values in "modis3_norm_final" raster. The syntax I used in raster calculator is:
Con("acc_log_norm", "modis3_norm_final", "acc_log_norm", "Value = 0")
The syntax runs but the resulting raster is a weired raster with value range -3.40282e+038 to +3.40282e+038. The cell values range from 0 to 1 in both of the rasters. Please help.
You have nodata values obviously
Con—Help | ArcGIS for Desktop try a boolean to get the hang of it
Con( "in_raster",1,0, condition)
where 1 will be assigned if the condition is true otherwise 0, then view your raster in that context and you will then be able to reinterpret yours. Don't use a visual inspection, examine the histogram (floating point rasters) or the table (integer rasters) being aware of where your nodata values are
The expression you want is: Con("acc_log_norm"==0, "modis3_norm_final", "acc_log_norm")
Translation: If "acc_log_norm" equals zero, then use "modis3_norm_final", else use "acc_log_norm".