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Introduction
In the previous section we have seen how creating pulse files and filling them with data. Data may represent a variety of formats, from scalars to multidimensional arrays and complex types. In particular, we have seen how the "signal" data type is very useful to represent the time evolution of a given quantity. There are however some limitations in the signal usage:
- The number of samples is a signal cannot exceed few billion (~4 GSamples) because the length of arrays handled in MDSplus is stored in a 32 variable
- In practice the maximum number of manageable samples in a signal is even smaller because of the memory requirement and the long access time that will make a program very likely crash when acessing a very large signal, or in any case data access would take an unacceptable time.