MapInfo Pro

 View Only

  • 1.  Show the centroids

    Posted 11-20-2024 02:38 
    Good morning,
When I draw circles or segments, the center of these objects does not appear.
    The "display centroids" option is however activated...

I would like to know if it is possible to make them appear easily.. 
THANKS


    ------------------------------
    Thomas Delaire
    Knowledge Community Shared Account
    ------------------------------


  • 2.  RE: Show the centroids

    Employee
    Posted 11-20-2024 03:36

    Hi Thomas

    It seems we only display the centroid for region/polygon objects.

    We don't display them for points, lines, polylines, or any of the cosmetic objects such as rectangles and ellipses.

    Depending on why you want to see them, you can run a query to extract the centroid and in this way show them as a point layer.

    In the image above, you can see the result of this small script which I run in the MapBasic window. You can also run it through the SQL Window and so store it as a script.
    Set Coordsys Table CosmeticLayer 
Select t.*, Centroid(t.obj) Object From CosmeticLayer As "t" Into _centroids NoSelect
Add Map Layer _centroids
Set Map Window FrontWindow() Layer _centroids Display Global Global Symbol (35,16744448,10,"MapInfo Symbols",256,0)

    CosmeticLayer is the name of my table.

    I use the MapBasic function Centroid(t.obj) to extract the centroid from the objects, and the Object keyword tells MapInfo Pro to treat this spatial expression as the object in the resulting query.

    The last two lines add the resulting query to my map and set an override style for the layer.



    ------------------------------
    Peter Horsbøll Møller
    Principal Presales Consultant | Distinguished Engineer
    Precisely | Trust in Data
    ------------------------------



  • 3.  RE: Show the centroids

    Posted 11-20-2024 03:48 
    yes, thank you Peter but this solution is very technical :)

It would make people's lives a lot easier if the centers of the segments appeared by clicking on "show Centroids"... 

Thank you for your response.
    



    ------------------------------
    Thomas Delaire
    Knowledge Community Shared Account
    ------------------------------

    
                                                
    
					
                                                    

        
                                                
				
    
                                                
    
                                                    
                                                        
                                                        Original Message
                                                
    
                                                
                                            
    
                                        
    

                                        
                                        

                                    
			
    

                                    
                                
    

                                
                                
    
                                
    
                            
		
    • 
                
                    
  • 
			                                
                                
                                
    
                                    
    
                                        
    
                                            
                                            4.  
                                            RE: Show the centroids
                                            
                                            
                                            
                                        
    
                                    
    
                                    
    
                                        
    
				
                                                
    
                                                    
    
					
        
        
        
        
        
        
        
            
        
    
				
    
                                                
    
                                            
			
    
                                    
    
                                
    
                                
                                

                                
    
                                    
    
                                        
    
				
                                            

    
    
    
    
        
    
            
    
					
                




                
            
				
    
            
    
                                                        
    
                                                            
    Employee
    
                                                        
    
                                                    
    
        
    
    
    
    
    
    

    

                                        
			
    
                                    
    

                                    
    
				

                                        
    
                                            
    
                                                
    
                                                    
    
                                                        Posted 11-20-2024 05:27
                                                        
                                                    
    
                                                
    
                                            
    
                                            
    
                                                

                                                
                                            
    
                                        
    

                                        
    
                                            
    
                                                
    A very fair point, Thomas. My solution is a bit more technical than checking on Options :-)
    

    Sometimes I just get used to the way things are that I don't see they could be any different
    

    Can I ask you to add your suggestion to Precisely Ideas, please?
    

    And please also add some details about why this is important to you. Why do you need to see the centroid, for example?
    

    Thanks
    



    ------------------------------
    Peter Horsbøll Møller
    Principal Presales Consultant | Distinguished Engineer
    Precisely | Trust in Data
    ------------------------------

    
                                                
    
					
                                                    

        
                                                
				
    
                                                
    
                                                    
                                                        
                                                        Original Message
                                                
    
                                                
                                            
    
                                        
    

                                        
                                        

                                    
			
    

                                    
                                
    

                                
                                
    
                                
    
                            
		
    •