JohnS

Name: Watermark hidden in text string Submitter: JohnS Submitted: 09 Dec 2009 File Updated: 16 Dec 2009 Category: General Version: 1.0 LabVIEW Version: 2009 License Type: BSD (Most common) This software is made to hide watermark text inside your text without changing the text content The watermark is buried in the space characters of your text ! It is "not" possible to find the watermark in the text only if you know where to look. You can make sure that text you have written is not manipulated by somebody without breaking the watermark.... How things work you can see in the attached example_watermark file. The file Spacy_watermark.vi is the packer and recovery of the watermark text inside a text string. Copy the watermarked text inside a document (.doc, .txt, .html) so this text is tagged with your watermark of choice. Explore how its done...... and let me know if you like it ! John Click here to download this file

Hello Kamaran, You can't change anything if the controls are outside the loop, and the vi is running. I can't check this vi, i don't have (want) Matlab installed at home. I think you need to think differently, but i'm not convinced what i am thinking is a correct thought ! Success!

Hello Kameran, I tried to interpred your matlab code and give you a simple sample in labview. Please let me know if it is what you want . John Download File:post-968-1161115795.vi

Hello Synchron, My offset is 2 hours, i live in the Netherlands, i suspect it has to do something with the UTC universal time zone, because when i use LV8 the format date/time has a UTC input (Bool) and if true your vi has no offset.... JohnS

Hello Crelf, The download is a llb, with all the sub vi's that are used, even the previous version is there without password. (tomat.vi). If you want you can see what's behind to get the whole picture. Everybody that likes to puzzle can do it. Bye John

Hello Crelf, What i wanted to say is: If anyone wants to use this vi for his or her study for example, to get LabVIEW data in Matlab file format its free to use and i hope it will be helpfull. Its not for playing, and fully functional as a sub vi, its even capable of logging data (adding data to an existing martrix). The password is just for protecting my work becaurse this vi is now being used commercially in the Netherlands. Best regards, John

Hello Denis, I have.... This is an expensive VI (two weeks of programming) but it works fine now. It can be used for private use, but not for commercial use ! (Password protected) I hope it wil help you with your coding. John Download File:post-968-1154521929.llb

Hello Jason, I had also a lot of difficulty but i have made a sub vi that will read .MAT files... This vi delivers the matlab variable name the type and the data in a 2D double array. Try this out, and tell me if you can use this. John PS I added a matlab.mat file to test (this file is generated with Matlab R2006a. Download File:post-968-1154419135.llb

Hello I have searched long for a Multiturn dial, like a 10 turn potmeter control. The only one i found was a picture control from SGCTek. I wanted not to use a picture control for my application so i build my own. If you can use it see the attached vi, please let me know if you have any suggestion for improvements. John Download File:post-968-1154380619.vi

Hello Michael, What you say is what i am trying to avoid. Matlab is a Dos/Unix command like :thumbdown: matrix calculations mathematic program. This has its own binary fileformat which is used at our firm. I want to save data to that format from Labview whithout using "Matlab Script" (not in base package) which need Matlab to be installed on the computer you're working on (13000 Euro / year / licence) Also to preserve disk space and conversion program's, my goal is to save the data in 9 type's (Double, Single int8,16,32 uint8,16,32 and string's) as variable,array's and multi dimension matrices. On top of that, so we say in Holland, i want to use this software to wat you say "saving line by line", what i call "logging data matrix by matrix in one of the 9 type's" although this is not at all supported by the Matlab file format.... If i succeed i have my "tjakka !!!" moment (Every dutch knows that's a goooood moment, it has nothing to do with sex but a famous dutch mental coach is shouting that for years and years on tv)

Hello Yen, Yes your right, but i was lazy and i did not want to create 9 different vi's for the 9 type's i want to cover right now. Bye the way i, like the Data Changed vi !

Thanks for your answer, this will work i am sure. My concern is if the data block is large (10 Mbyte onwards), that the overhead will be time consuming ? It's difficult to imagine what the data conversion is adding (my previous saving in Ascii format cost a lot time converting from double -> Ascii and from Ascii -> double in Matlab and i lost resolution)....?

Does anyone know if its possible to create a control which adapt to the type which its wired to ? I like to build a sub vi that takes in any data type and saves it according to this type on disk in a Matlab file format. :headbang: I have already many bumps on my head. In this sub vi i want to use the function "flatten to string" which has an input which supports anything, this "anything" feature i want to use as a control for my sub vi. JohnS