How to get absolute and relative acceleration

[Synergical]

Hello,

I am trying to have absolute and relative accelaerations. The following are the recorders :
recorder Node -file $dataDir/ARelFree.out -time -node 1 7 14 27 34 47 54 -dof 1 accel;
recorder Node -file $dataDir/AAbsFree.out -timeSeries 20000 -time -node 1 7 14 27 34 47 54 -dof 1 accel;
My problem is that I am getting 0 values at the base in both accelerations.
Any one can tell me what is wrong with me please ?

Thank in advance

[fmk]

is the time series command number valid for the absolute recorder command.

if you add the following 2 lines to the example script http://opensees.berkeley.edu/wiki/index ... ple3.3.tcl you will see the fixed node 1 does have values in the second file:

recorder Node -time -file accelR.out -node 1 3 4 -dof 1 accel
recorder Node -time -file accelA.out -timeSeries 1 -node 1 3 4 -dof 1 accel