LVM API

[DFGray]

LabVIEW has shipped with an Express VI which supports the ASCII LVM format since version 7.0.  However, there is no other way to access LVM files from LabVIEW, short of burrowing into the Express VI and using the subVIs.  Doing this leads to problems, since the subVIs have changed a few times.  In addition, the Express VI does not support all the features of LVM and makes accessing multiple data segments somewhat nonintuitive.  We need an API for LVM, ideally object based, so features like the special block can be easily extended by users.

[Jervin Justin]

Hi DFGray,

We just launched a new branch of the NI Idea Exchange to foster ideas for LabVIEW Add-ons. The intent was to create a place for LabVIEW Add-on developers (both NI R&D and developers in the community) to find ideas that matter to the community.

This is part of our ongoing effort to enable LabVIEW developers to productize LabVIEW code. Some of the other things we’ve done this year were adding Licensing & Activation for 3^rd Parties, launching the Compatible with LabVIEW Program and the LabVIEW Tools Network.

We’ve identified your particular idea as one that could potentially be made into an Add-on and would like to move it to this new Idea Exchange so that Add-on developers can easily find it. Would this be okay with you?

Thanks!

[DFGray]

Sort of.  National Instruments created LVM and it is in the same Express block as TDM and TDMS, both of which have native APIs.  It would seem weird for LVM to be an add-in, but I will accept it any way it happens.

[StefanR]

Please note, LVM files can be accessed by using Storage VIs which is also the native API for TDM and can access TDMS as well (native TDMS API has better performance).

Please also note that Storage VIs has been reworked for LabVIEW 2010 to better support all kind of file formats supported through DataPlugins - which are about 350 at this time.

For a list of all DataPlugins available for free web download please refer to ni.com/dataplugins

[Darren]

Any idea that has received less than 3 kudos within 3 years after posting will be automatically declined.