LTspice measuring drain current when certain values of Vds and Vgs are reached
Here's the closest procedure I've got to the fully automated approach:
I've created a parameter called VGG for the gate voltage source, then I've stepped it throught the desired points:
.step param VGG list 0 -0.5 -1.0 -2.0 -3.0 -4.0 -5.0

Then for each desired Vds value, I've created a corresponding variable Id_ using the .meas:
.meas DC Id_&lt;x&gt; FIND I(R2) WHEN V(VDS)=&lt;value&gt;

As I needed 7 different Vds values, I had to write 7 different .meas lines (thus 7 Id_ variables). But I guess it's better to write 7 lines than writing 49 lines.