[Therion] map without scrap, survey or map reported as incompatible map projection

[Bruce Mutton]

I was creating a new map just now, and while I should have realised that it
would probably not work in its current form, the error message caused al lot
of confusion and initially led me down the wrong track.

 

C:\Program Files .\therion.exe: error -- INDEXGLMESM_System.th [134] --
incompatible map projection -- SwissM_PlanMap at GLMESM_system

 

I started looking through map definitions to find which one was not defined
properly as a plan, despite knowing they all must be, as they have worked
for years.

 

  map GreenlinkAreaPlanMap -title "Greenlink Area<br>Plan view" -projection
plan

  # overview map focusing on surface features

                preview below SwissM_PlanMap at GLMESM_system

                  preview below DwarfsDoorPlanMap at GLMESM_system

                  preview below MiddleEarthPlanMap at GLMESM_system

                  preview below GreenlinkPlanMap at GLMESM_system

                  preview below BlackSabbathPlanMap at GLMESM_system 

  endmap GreenlinkAreaPlanMap

 

The problem turns out to be that a map definition must contain more than
just previews.  If I remove 'preview below' from one of the definition
lines, all is well.

 

I suggest that the error would be more helpfully be reported by Therion as;

"map must contain at least one scrap, survey or map without preview"

 

Bruce

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