How to get nearest node of other component with the help of temp node from component 1?

The hm_getclosestnode should get you what you want if you pick elements by component.
https://help.altair.com/hwdesktop/hwd/topics/reference/hm/hm_getclosestnode.htm

Hi Ben,

Thanks for the suggestion.

I have used below method. Is that ok?

set refNodeCoord [hm_getvalue nodes id=[lindex $TempNodesList_1 0] dataname=coordinates]
        puts $refNodeCoord
        
        hm_markclear comps 2
        hm_markclear elems 2
         
        hm_createmark comps 2 $Comp2_Name
        hm_createmark elems 2 "by comps on mark" 2
        
        set refCloseNode [hm_getclosestnode [lindex $refNodeCoord 0] [lindex $refNodeCoord 1] [lindex $refNodeCoord 2] 2]
        #Get ID of Last created Node
        set pnt [TheLast node]
         
         set ref2Pnt [hm_getvalue nodes id=$pnt dataname=coordinates]
         puts $ref2Pnt
        
         hm_markclear comps 2
         hm_markclear elems 2

Hi Ben,

Thanks for the suggestion.

I have used below method. Is that ok?

set refNodeCoord [hm_getvalue nodes id=[lindex $TempNodesList_1 0] dataname=coordinates]
        puts $refNodeCoord
        
        hm_markclear comps 2
        hm_markclear elems 2
         
        hm_createmark comps 2 $Comp2_Name
        hm_createmark elems 2 "by comps on mark" 2
        
        set refCloseNode [hm_getclosestnode [lindex $refNodeCoord 0] [lindex $refNodeCoord 1] [lindex $refNodeCoord 2] 2]
        #Get ID of Last created Node
        set pnt [TheLast node]
         
         set ref2Pnt [hm_getvalue nodes id=$pnt dataname=coordinates]
         puts $ref2Pnt
        
         hm_markclear comps 2
         hm_markclear elems 2

I would make the following changes:

   set refNodeCoord [hm_getvalue nodes id=[lindex $TempNodesList_1 0] dataname=coordinates]
        puts $refNodeCoord
        
        *clearmarkall 2
         
        hm_createmark comps 2 $Comp2_Name
        hm_createmark elems 2 "by comps on mark" 2
        
        set refCloseNode [hm_getclosestnode {*}$refNodeCoord 2]
         
         set ref2Pnt [hm_getvalue nodes id=$refCloseNode dataname=coordinates]
         puts $ref2Pnt
        
         *clearmarkall 2

Thank you so much for the guidance.

It works as required.