*elempatchdecraction

To start the patch checker and move through several patches, changing the patch size, while using quality criteria given in the example for *reset_qa_calculator:

*createdoublearray 89 1 1 15 13.5 6 3 1.5 1 1 15 18 22.5 30 45 1 1 1 2 4.4 5 10 1 1 0 5 8 10 90 1 1 90 110 125 135 180 1 1 90 70 55 45 0 1 1 60 80 100  120 180 1 1 60 50 30 20 0 1 1 0 10 35 45 90 1 1 1 0.9 0.75 0.7 0 1 0 0 0.3 0.8 1 2 1 1 2 6 8 10 15 0 0 0.8 1 10
*reset_qa_calculator 1 89
*createmark elems 1 displayed
*elementqualitysetup 1
*elempatchstartaction 0 1.0
*elempatchnextaction
*elempatchnextaction
*elempatchincraction
*elempatchprevaction
*elempatchdecraction
*elempatchstopaction
*elementqualityshutdown 1

Incorrect usage results in a Tcl error. To detect errors, you can use the catch command:

if { [ catch {command_name...} ] } {
   # Handle error
}