The complete DDS:
Dataset {
    Int32 i[20][10];
    String s;
} test1;
The data:
Float64 i[3][4] = {{246913578, 246913578, 246913578, 246913578},{246913578, 246913578, 246913578, 246913578},{246913578, 246913578, 246913578, 246913578}};