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--- 02_new_tutorials:parameterfile [2025/10/14 13:03] – gaetan
+++ 02_new_tutorials:parameterfile [2025/11/16 10:32] (current) – gaetan
@@ Line 82: / Line 82: @@
 					  [RU(-30) RH(90) pBud(b[radius]).($[age]=b[age], grow())];
 ]
+boolean tooOld(BaseBud n){
+	return n[age]>ageLimit ;
+}
 </code>
@@ Line 165: / Line 169: @@
 }
 </code>
+Now run the project in headless with:
+<code>
+java -jar core.jar --headless Model.gsz
+</code>
+This will print in the terminal the output value of ''compute_vol''. E.g. ''Total volume of buds: 2.78392774842903
+''
+==== Command line arg ====
+Let's change some parameter value for the run:
+<code>
+java -jar core.jar -PModel.ageLimit=15 -PModel.aging=1  -PModel.initialLength=1 -PModel.budType=1 --headless Model.gsz
+</code>
+This should display in the terminal: ''Total volume of buds: 0.07469535004252173''.
+==== Change the parameter file ====
+It is also possible to simply change the content of the parameter file by simply opening the file and changing its content.
+The file is called ''parameter_files/default-parameter-manager.parameters''. By setting its content to:
+<code>
+Model.budType=0
+Model.ageLimit=7
+Model.initialLength=0.5
+Model.aging=0
+</code>
+And running in headless again: ''java -jar core.jar --headless Model.gsz''
+I get the value: ''Total volume of buds: 2.592734549068271''
+====== QSM Project ======
+Now let's see how these parameters can be fit into a bigger project, the [[:todo|QSM project example]]