[huecu588755]

I know, I can set a function to get the slice date at a surface or point. But I don't know how to use it. So, where can I find the guider for this part.

[Dipsomaniac]

Have a look at the probe or sample dictionaries, or using the probe function within the controlDict. Their are many examples on the forum and online.

[Tobi]

functions
{
    probes
    {
        // Where to load it from
        functionObjectLibs ( "libsampling.so" );

        type            probes;

        // Name of the directory for probe data
        name            T_probes;

        // Write at same frequency as fields
        writeControl  adjustableRunTime;
        writeInterval 0.01;

        // Fields to be probed
        fields
        (
            T
            TYS
        );

        // Used in python functions
        nProbePoints=10;

        probeLocations
        (
            ( 0.05 0.05 0.005 )
            ( 0.05 0.05 0.005 )
            ( 0.05 0.05 0.005 )
            ( 0.06 0.05 0.005 )
            ( 0.06 0.05 0.005 )
            ( 0.07 0.05 0.005 )
            ( 0.07 0.05 0.005 )
            ( 0.08 0.05 0.005 )
            ( 0.08 0.05 0.005 )
            ( 0.08 0.05 0.005 )
        );
    }
}