Rank: 1097 based on 85 downloads (last 30 days) and 5 files submitted
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Grant Lohsen

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Georgia Tech Research Institute

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Files Posted by Grant View all
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20 Nov 2012 Audio Equalizer Modify an input signal to match a given power spectral density. Author: Grant Lohsen audio equalizer, spectral shaping, nsd, fft, ifft, psd 31 0
18 May 2012 stlwrite - Write binary or ascii STL file This is an update to the excellent work done by Sven Holcombe to add color support Author: Grant Lohsen data export, data import, mesh, patch, stl, surface 15 0
18 May 2012 Binary STL file reader Update of the stlread function by Francis Esmonde-White to properly implement color reading. Author: Grant Lohsen 3d models, binary, cad, data export, data import, faces 19 0
15 Jun 2011 Merge Structures Merges two structures of equal sizes. Author: Grant Lohsen structure, struct, merge, join, struct array 0 0
15 Apr 2010 Convert TDMS (v2) Import a TDMS v2 file as a matlab object (ob). Author: Grant Lohsen tdms, convert, gtri, lohsen 20 13
  • 5.0
5.0 | 3 ratings
Comments and Ratings by Grant View all
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22 Apr 2011 Model3d MATLAB class for reading, viewing 3D dxf and 3ds files. Author: Steven Michael

I can't get this to run on windows. I get the error "??? Undefined function or method 'model3d' for input arguments of type 'char'". I noticed that this includes .mexglx files, and i believe this is linux files. Does anyone have the mexw64 files so I can run this? alternatively, is there a free compiler I can put on my system to compile this?

Matlab R2008b
16 Apr 2010 Convert TDMS (v2) Import a TDMS v2 file as a matlab object (ob). Author: Grant Lohsen

I think the group functions may not be working properly. If you experience any problems with it let me know. I am trying to determine if there is an error in it.
15 Apr 2010 Convert TDMS (v2) Import a TDMS v2 file as a matlab object (ob). Author: Grant Lohsen

Mark,
The original file this is based off of (written by Brad Humphreys of ZIN Technologies) supported V1.0 of TDMS, mine supports V1.2. I haven't written one to support v1.1 and have not seen any documentation of the format (v1.2 has format specs online). I hard coded the version restriction so that it would only run on supported version (1.1 is 4712 and 1.2 is 4713).

I may add support for v1.1 in the future but it will be after i incorporate the upcoming v1.2 enhancements to speed and support of comment data.
-Grant
06 Apr 2010 Convert TDMS (v2) Import a TDMS v2 file as a matlab object (ob). Author: Grant Lohsen

This file is about to face a major update so comments will be supported in imports. Just FYI to check back inside of ~1-2 months (when I get time to update it)
Comments and Ratings on Grant's Files View all
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13 Jul 2012 Convert TDMS (v2) Import a TDMS v2 file as a matlab object (ob). Author: Grant Lohsen Patel, Hari

I tried to read .tdms file(300MB) generated by LabVIEW SignalExpress and I got following error:

10:09:05 Begining conversion of: C:\work\Matlab workspace\Signal Express data\07112012_030159_PM\convertTDMS (1)\Digital_Input.tdms
??? Error using ==> fread
Invalid precision.

Error in ==> convertTDMS at 257
propsValue=fread(fid,1,matType);

Any suggestions?
22 Sep 2010 Convert TDMS (v2) Import a TDMS v2 file as a matlab object (ob). Author: Grant Lohsen Robert

Version 7 of this function was posted 20 SEP 10 (File ID #28771)
13 Aug 2010 Convert TDMS (v2) Import a TDMS v2 file as a matlab object (ob). Author: Grant Lohsen Michael

Is anybody going to take a stab at updating this to process TDMS v 2.0 files?
02 Jun 2010 Convert TDMS (v2) Import a TDMS v2 file as a matlab object (ob). Author: Grant Lohsen Soraya

Has somebody found a way to make it work with the v1.1 format ?
It seems that there are a lot of things to change.
Thanks

17 Apr 2010 Convert TDMS (v2) Import a TDMS v2 file as a matlab object (ob). Author: Grant Lohsen John

I think this is a much better solution than the dll provided by NI. I've searched extensively and tried a few approaches and this is the closest I've found to a good solution so I really appreciate the work that has been done here. I am having problems getting it to fully work, though. I implemented fix 1 suggested by Alex above and added a few more hacks to get it to run without errors, but in the end none of the data is present in the output. I added a line to remove commas in the fixcharformatlab, and I also had to add a check after line 315 to continue the loop if cnt == 0. If you'd like I could send you my tdms file to help with debugging.
Top Tags Applied by Grant
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data export, data import, patch, stl, 3d models
Files Tagged by Grant View all
  • 1 - 5 of
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Updated   File Tags Downloads
(last 30 days) 		Comments Rating
20 Nov 2012 Audio Equalizer Modify an input signal to match a given power spectral density. Author: Grant Lohsen audio equalizer, spectral shaping, nsd, fft, ifft, psd 31 0
18 May 2012 stlwrite - Write binary or ascii STL file This is an update to the excellent work done by Sven Holcombe to add color support Author: Grant Lohsen data export, data import, mesh, patch, stl, surface 15 0
18 May 2012 Binary STL file reader Update of the stlread function by Francis Esmonde-White to properly implement color reading. Author: Grant Lohsen 3d models, binary, cad, data export, data import, faces 19 0
15 Jun 2011 Merge Structures Merges two structures of equal sizes. Author: Grant Lohsen structure, struct, merge, join, struct array 0 0
15 Apr 2010 Convert TDMS (v2) Import a TDMS v2 file as a matlab object (ob). Author: Grant Lohsen tdms, convert, gtri, lohsen 20 13
  • 5.0
5.0 | 3 ratings

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