In-memory vector data methods The VM class will store vector (array) data in a memory buffer which can be accessed using the VM methods. The main use for the VM class is to store data in a single physical memory location. This memory can then be accessed by a user DLL using the GetPtrVM_GEO function defined in gx_extern.h. VM memory can be any size, but a VM is intended for handling relatively small sets of data compared to a VV, which can work efficiently with very large volumes of data. The acceptable maximum VM size depends on the operating system and the performance requirements of an application. The best performance is achieved when all VM memory can be stored comfortably within the the available system RAM. If all VM memory will not fit in the system RAM, the operating system virtual memory manager will be used to swap memory to the operations systems virtual memory paging file. Note that the operating system virtual memory manager is much slower than the manager used by Geosoft when working with very large arrays in a VV. See VV for methods to move data between a VM and a VV.

public class CVM : CHANDLE

Public Class CVM
	Inherits CHANDLE

public ref class CVM : public CHANDLE

type CVM =  
    class
        inherit CHANDLE
    end