How to check if custom terrain object with a given name already exists?

I am using the function addCustomTerrain in a script to create a custom terrain object.

addCustomTerrain("terrainname",myfile,"Attribution",attribution,"WriteLocation",writelocation)

When running the code, if the custom terrain object already exists MATLAB will give an error:

Error using addCustomTerrain

Terrain 'terrainname' already exists.

I would like to write the script such that if the terrain already exists it will skip adding the terrain (so I can just run the program all the way through). Is there a way to check if the custom terrain object already exists or otherwise handle this error without stopping the program?

Answer 1

[Sathvik]

Hi Mike

I understand that you want to write a script that skips adding the terrain if the terrain exists. You can use a ‘try catch’ block to implement this:

try 
    addCustomTerrain("terrainname",myfile,"Attribution",attribution,"WriteLocation",writelocation)  
catch ME 
    if strcmp(ME.identifier, 'shared_terrain:terrain:TerrainNameExists') 
        %Do nothing 
    else 
        rethrow(ME); 
    end 
end 

Here's a link to the documentation for the 'try catch' block.

https://www.mathworks.com/help/matlab/ref/try.html

Hope this helps!