Thank you for your response!
While I did successfully disable map scalars by opening the advanced settings, there was an error shown in “Output Messages” tab saying “the data must have either 2 or 4 components”.
So I checked further about map scalars, and I found this section on paraview tutorial
The tutorial said data array can be deemed as color if it is an unsigned char with 3 components.
However my data, while satisfying this condition, still triggers an error. My data is an unsigned char containing 3 components ranging from 0 to 255.
Does this means to disable map scaler needs an RGBA format image, that is, should a column of data containing the opacity of each pixel be added? Or is there other ways to navigate through this problem?
Thank you again for your patient response!
Best regards,