hyperbola result 0  0 1 0 20 10
dset ech 1.1
repeat 20 { 
    2dpscale result 0 0 0 ech; 
    copy result .; 
}
checkdump result -name {Center Axis XAxis YAxis Radii} -ref {{0 0} {1 0} {1 0} {-0 1} {134.549998986512 67.2749994932561}} -eps 0.01
checkview -display result -2d -path ${imagedir}/${test_image}.png