color bar with the same spacing

[l1q1d]

Is there any way to create a color bar with the same spacing but with labels not value spaced equally? (picture as example)

[l1q1d]

Solved using:

void colorbar_label( PLINT axis, PLFLT value, char *label, PLINT length, PLPointer data  )
{

    PLFLT * inputdata = (PLFLT *) data;
    snprintf( label, length, "%.2f", inputdata[(int)value] );
}
....

    const char *axis_opts[] = {
        "uwxno",
    };

PLFLT       shedge[]    = {0.4,1,2,4,10,20,40,100};

num_values[0] = 8;

    values[0]     = new PLFLT[ns];

    for (int i=0;i<ns;i++){
        values[0][i] = i;

    }
       pls->colorbar( &colorbar_width, &colorbar_height,
                   PL_COLORBAR_SHADE | PL_COLORBAR_SHADE_LABEL | PL_COLORBAR_BACKGROUND, PL_POSITION_BOTTOM ,
                   0.0, 0.45,0.9,0.1, 0, 1, 1, 0.0, 0.0,
                   cont_color, 2,
                   n_labels, label_opts, labels,
                   n_axis_opts, axis_opts,
                   axis_ticks, axis_subticks,
                   num_values, values );