As mentioned in the volume morph" help, 

<https://rbvi.ucsf.edu/chimerax/docs/user/commands/volume.html#morph>

"the input maps should have the same grids: dimensions, spacing, and numbers of points. Note volume resample can be used to make a copy of one map that has the same grid as another."

Here is the "volume resample" help, with explanation that you can lose some resolution from resampling:

<https://rbvi.ucsf.edu/chimerax/docs/user/commands/volume.html#resample>

There is also a "volume add" if you are just trying to put different parts together, rather than morphing:

<https://rbvi.ucsf.edu/chimerax/docs/user/commands/volume.html#add>

I hope this helps,

Elaine

On Aug 18, 2022, at 5:36 PM, HONG ZHAN via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:

Dear user group, 

I am trying to do volume morph to transform different parts of a complex into another part of the same complex. Because I did drag and fit each segmented parts, the map positions are no longer the same and I have this error: Map positions are not the same. 

Is there a way to do the map morph to transform different map parts in the complex?

Many thanks!
Hong