IDfsuFile Methods |
The IDfsuFile type exposes the following members.
Name | Description | |
---|---|---|
![]() | Close |
Close the file and release all ressources associated with it. The header information
is still valid (for reading) even though the file has been closed.
(Inherited from IDfsFileIO.) |
![]() | Dispose | Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources. (Inherited from IDisposable.) |
![]() | FindItem |
Positions the file pointer at the location in the file where the
specified dynamic item at the specified time step starts.
(Inherited from IDfsFileIO.) |
![]() | FindTimeStep |
Positions the file pointer at the location in the file where the
specified time step starts.
(Inherited from IDfsFileIO.) |
![]() | Flush |
Flush cached data to the file. This will especially update the header information,
such that if another process is reading the file while it is being read, the new
header information can be retrieved.
(Inherited from IDfsFileIO.) |
![]() | FlushTimeStep |
Flush cached data to the file. This will update the time part of the header information,
but not other parts of the header.
(Inherited from IDfsFileIO.)Compared to the Flush method; the Flush will update statistics of all items (if enabled) and all modifications to the header data. This method will only update the time part. The Flush method can be an expensive operations especially for files with many dynamic items. This method is independent of the file at hand. |
![]() | ReadItemTimeStep(Int32, Int32) |
Reads the dynamic item-timestep as specified from the file. It throws an
exception if itemNumber or timestepIndex
is out of range.
(Inherited from IDfsFileIO.) |
![]() | ReadItemTimeStep(IDfsItemData, Int32) |
Read the specified item and time step. With this you can reuse
the data buffer in IDfsItemData, Data.
The data is updated in place.
(Inherited from IDfsFileIO.)If the data from one timestep is to be saved for later, the user is responsible to copy the data before using this method again. |
![]() | ReadItemTimeStepNext | Reads the next dynamic item-timestep. First time called it returns the first timestep of the first item. It cycles through each timestep, and each item in the timestep. For a file with 3 items, it returns (itemnumber, timestepIndex) in the following order: (1,0), (2,0), (3,0), (1,1), (2,1), (3,1), (1,2), etc. If one of the ReadItemTimeStep is called with for example (1,4) the next call to this method will continue from there and return (2,4). If one of the methods reading/writing static item data is called, the iterator is reset, and the next call to this method again returns the first item-timestep. This is the most efficient way to iterate through all the items and timesteps in a file, since it iterates exactly as the data is stored on the disk. |
![]() | Reset |
Resets the file pointer to point on the first dynamic item time step in the file.
(Inherited from IDfsFileIO.)Can also be used if it is required to restart reading the static items. |
![]() | WriteItemTimeStep |
Writes data to the specified item and timestep in the file.
(Inherited from IDfsFileIO.)If the item-timestep exists already, data is updated. If it does not exist, the item number and timestep index must match exactly the next item-timestep after the last one in the file. The size of the data must match the data size of the item that is to be written. The time value is only relevant for files with non-equidistant time axis. For files with an equidistant time axis, the time value is ignored, and a zero can be used. |
![]() | WriteItemTimeStepNext | Writes the next dynamic item-timestep. If the file pointer points to the end of the file, this will append a new item-timestep to the file. If the file pointer points to an existing item-timestep, the data of that item-timestep is updated. Remember that the file pointer position depends on the mode that the file was opened: In edit mode the file pointer points at the first item-timestep. In append mode the file pointer points initially at the end of file. It iterates over the item-timesteps as the ReadItemTimeStepNext, see there for more details. This is the most efficient way to iterate through and update/append the items and timesteps in a file, since it iterates exactly as the data is stored on the disk. The size of the data must match the data size of the item that is to be written. The time value is only relevant for files with non-equidistant time axis. For files with an equidistant time axis, the time value is ignored, and a zero can be used. |
Name | Description | |
---|---|---|
![]() | CalculateElementCenterCoordinates |
For each element, calculates the element center coordinate
as the average of all node coordinates of the nodes in
each element.
(Defined by DfsuUtil.) |
![]() | CreateEmptyItemDatasT |
Create an IDfsItemDataT of the provided type for each of the
dynamic items in the file.
(Defined by DfsuUtil.)The result can be used by ReadItemTimeStep(IDfsItemData, Int32) If not all items are of type {T}, an exception will be thrown. |
![]() | FindTopLayerElements |
Find element indices (zero-based) of the elements being the upper-most element
in its column.
(Defined by DfsuUtil.)Each column is identified by matching node id numbers. For 3D elements the last half of the node numbers of the bottom element must match the first half of the node numbers in the top element. For 2D vertical elements the order of the node numbers in the bottom element (last half number of nodes) are reversed compared to those in the top element (first half number of nodes). |
![]() | GetDateTimes |
Return an array of DateTimes which are the times for each timestep
(Defined by DfsuUtil.) |