Variant Date

Hi,
There is an ABAP program step in a job. The program uses a variant which is having date.
The attribute for the date field is RS_VARI_V_TODAY which would give currrent date.
But the thing is when the job is manually run, the date is not provided automatically.
Is it due to having a temporary variant like this &0000000001810.
So what is this temporary variant, how it is generated.. is it having any relation with the existing variant..
Please provide me information on this..
will be rewarded.
Thanks in adv,
Naveena.

Hi Naveena,
seems like problem with variant..
can u check your variant.... go to variant and there u can see a column 'save without values' please uncheck that column..
Regards
Anuj

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I have a large number of photos imported into iPhoto with the dates wrong. How can I adjust multiple photos (with varying dates) to the same, correct, date?

I have a large number of photos imported into iPhoto with the dates wrong. How can I adjust multiple photos (with varying dates) to the same, correct, date?

If I understand you correctly, when you enter a date in the Adjust Date and Time window, the picture does not update with the date you enter. If that is the case then something is wrong with iPhoto or your perhaps your library.
How large a date change are you putting in? iPhoto currently has an issue with date changes beyond about 60 years at a time. If the difference between the current date on the image and the date you are entering is beyond that range that may explain why this is not working.
If that is not the case:
Remove the following to the trash and restart the computer and try again:
Home > Library > Caches > com.apple.iphoto
Home > Library > Preferences > com.apple.iPhoto (There may be more than one. Remove them all.)
---NOTE: to get to the "home > library" hold down option on the keyboard and click on "Go" > "Library" while in the Finder.
Let me know the results.

What is the impact of using a variant data type on performance, speed memory demands etc?

This is another one of my "lets get this settled once and for all" threads.
I have avoided variant data types whenever possible to keep the performance of my apps up. From some observatsions i have made over the years, I am of the opinion that;
1) In-place operations can not be carried out on variants.
2) Passing a variant to a sub-VI (regardless of the terminal on the icon connector) are always copied.
I would like confirmation or correction of the above so we know more about this animal we call LabVIEW.
Thank you,
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction
Solved!
Go to Solution.

A couple notes:
1. You can use the To/From Variant nodes for the Inplace Element Structure to operate inplace on the contained variant data. This should work just fine even if you have a big 2D array contained.
2. Variants are incredibly useful when you use them for Variant Attributes, rather than just storing data. The Variant Attribute implementation uses a binary tree to store the key value pairs, which provides quick insertion and lookup.
3. I don't work on the internals of LV, but I see no reason whatsoever that passing a variant into a subVI would always necessitate a copy. I could be wrong, but that sounds very odd to me.
However, I have generally started trending towards using flattened strings. Flattened strings are generally more efficient memory-wise, because they don't contain all the type descriptor information, just the raw data. (I think there's some exception when flattening LV Classes.) Variants always store the type descriptor, so even an empty variant can take up a bit of memory.
Variants received a big performance boost from 7.x to 8.x. They used to have a bad reputation, but I wouldn't be afraid to use them where applicable. I personally don't see a lot of benefits over flattened strings, though, except in the case of tools like the OpenG Variant INI files, which can dynamically parse out and construct variant types.
Jarrod S.
National Instruments

How to create a multipage PDF with same template but dynamically varying data?

Hello,
I need to create a multi-page PDF where I need to use the same template but dynamically varying data.
Eg Scenario:
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2. I have a PDF template in SFP which has a 2 page structure.
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Thanks,
Aniket

Isn't it just by setting the two pages into a form ( like an subform in the content ) and put the settings in a proper way?
There is this setting, that the masterpage comes up everytime the pagecount is done.
Example
Page 1 3 5 --> Masterpage 1
Page 2 4 6 --> Masterpage 2
And the designview with the flowing data, you can do it by scripting to get to the next page after the pos is finished.
Unfortunaly I do not got a system atm, so I hope the explaination give you a clue, where to search.
Regards
Florian

Decode variant data w/o using 'Variant To Data' function.

I need to decode variant data w/o having foreknowledge of the type used to create it. That is, I'm using the 'Flattened String To Variant' function which gives me the info I need, but it's all contained within one indicator. I need some way to break this info down into its constituent elements.
For instance, let's say I have the flattened data and type descriptor from a cluster with two elements, a boolean and a string, but not the structure itself. Passing this flattened data and/or the type descriptor into a function, I would get a 2D array (or the like) as output containing the name of the boolean (its label), its value, and the name of the string and its corresponding value.
There must be a way to
do this, and I suspect it's been done already, but I can't find any reference to it.
I have attached a file named Test.vi which demostrates this problem.
Remember, even though I know the name of the control, I won't know the type, so I cannot use the 'Variant To Data' function to deference these values. I can make ready use of DLLs, CINs, or LabVIEW code for the solution.
Thanks ahead of time for any help! Greg
Attachments:
Test.vi ‏26 KB

You might be able to take advantage of the Variant to Flattened String VI from the Advanced>>Data Manipulation>>Variants pallette. This VI converts a Variant to a flattened data string and a type descriptor. The type descriptor is explained in ap note 154. You might be able to create a VI that would parse data from the flattened data string using the type descriptor. You might have to represent each piece of data as a flattened string to work around the data flow issues in LabVIEW.

Which table Variant datas are stored

Hi ,
    I need to know where variant datas are stored and in which table they are stored .
juts let me know the name of the table alone .
Thanks ,
vinay .

Hi again,
1. The contents of the field are NOT STORED
   in the manner which u are assuming
a) field name - vield value
b) field name - vield value
x) field name - vield value
2. Rather they are stored in the same table VARI
in RAW format.
3. CLUSTD is the LRAW field,
   which stores this whole data
   in encoded format.
regards,
amit m.

Find/Change Varying dates..

I have a varied dates that appear throughout a LONG document.. for instance "January 14, 1945" date changes all the time of course.. usually appears at start of a paragraph.. i need to set up a find/change to be able to select it, and I need to change it's style.. is this the wildcard choice somehow in find/change?

try a GREP search for \<\w+\.? \d\d?, \d{4}\> (those are ordinary typed spaces after the first ? and the comma). If should find dates with months spelled out or abbreviated with or without a period. You can use this in a GREP Style as part of a paragraph style to apply your character style so you don't need find/change

Variant data type? does it exist in jsp?

Is there a variant data type in jsp?
public void setRedirect(String page, String error, HttpServletRequest req, HttpServletResponse res, String accountInfo) throws ServletException
the method above does the exactly the same thing except 1 takes in a integer data type and the other page takes in strings

Hi
Java is a tightly coupled programming language. so you dont have a variant data type available.
Thanks
Swaraj

VARIANT data in TestStand

I want to control a program using ActiveX in TestStand. I can successfully obtain a reference to the VI object in the program. The server program was written in LabView and allows the Call method of ActiveX to control the program. The Call method requires two parameters. Both are of data type VARIANT (parameterNames, parameterValues). The parameterNames are basically strings, but the parameterValues are mixed type(string, int, bool,etc).
Is there a way to create a data type of VARIANT in TestStand to pass data through the ActiveX adapter??
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Bob asked what you meant by mixed data types. To clarify, the LabVIEW ActiveX server has a call method. It's second parameter is a varaiant array of variants, where the elements can be different (mixed) data types. Each data type corresponds to the LabVIEW control specified in the first parameter of the Call method, which is a variant array of strings.
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For the first parameter of the Call method you can send in an TestStand array of strings. This array will automatically be converted to a variant array of BSTRs be
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In general, the ActiveX automation adapter does handle sending data from/to an ActiveX server. The issue of passing arrays of variants has not occurred very often. We have encountered it once internally at NI, but I believe that you are the first customer to ask about passing arrays of variants.
In terms of the big picture, I don't understand why you are calling a VI using the AcitveX automation adapter instead of the the LV adapter. If the vendor has already created a VI to call another VI through the LV ActiveX server (why does he/she do this?), then perhaps you should just call the vendor's VI directly.

Variant Data and Data (Type)

I'm on my way to build a XML parser for my program.
How do you make Variant display it's Data and Data (Type) like the one on my screenshot?
I dont want my data type be a string. I want it to be the same as my cluster.
Is there a way to edit the data and data type for a variant control and return the same data for it's indicator?
Thanks!
Attachments:
aaa.jpg ‏23 KB
BBB.jpg ‏32 KB
CCC.jpg ‏19 KB

Can you demonstrate how exactly you're editing the Variant data type, as string...!!
Below is an example, where I converted a cluster (Error data type) into variant and also displayed it on the Front Panel.
Now if you wanna edit the original cluster data, by editing the string displayed in Variant indicator, this is not a good idea. Ideally you should convert the Variant data type to its original data type and thendo modification and convert it back to Variant.
saintalan94 wrote:
the VI at the link you provided have a password, I cant even look into the VI.
Those VIs are provided as it is from its developer and even I don't have the password.
I am not allergic to Kudos, in fact I love Kudos.
Make your LabVIEW experience more CONVENIENT.

Variant data to data

Hi,
I am connecting to MySQL server and with SELECT VI from database
connectivity kit I am having 2 coloums of data, I have read the
documentation it says, If I want to convert this data into labview data
I have to use Variant Data to Data VI but when I use that I have got the
error message below.
What do you think is the problem?
ERROR MSG:
Generally, polymorphic terminals accept any wire type connected to them.
But sometimes these terminals only accept a limited subset based on
other wire types connected to other terminals. The most common cause of
this conflict is using the type cast node to cast between incompatible
types, such as a 2D array and a string. Check the terminals connected by
this wire and change that node to make this wir
e type acceptable.
TIA

Crystal wrote:
> Actually, there is a function specifically for databases called
> Database Variant To Data. Have you tried using this function?
Hi,
That is what I was talking about but meanwhile I understood that it was
my fault.
Cause the VI name is not Variant Array Data to Array Data )
When I split and send the variants one-by-one it works.
cheers

Variant data

Hello,
I am using an ActiveX DLL in my current LabVIEW project, something
that I have never done before
I use one of the DLL's methods to receive Variant data and then use
the "Variant to Data" to try and receive and array of floats that I
then want to plot to a chart. At the moment I am only getting 0.00 for
all the values and I know that this should not be the case. I create
an indicator for the Variant and this is the information I can get.
OLE Variant
Variant Type -> VT_ARRAY|VT_R4
Value -> Array(Non Displayable)
I have also tried the "Get Variant Attribute" VI but don't get any
values for either 'name(s)' or 'value(s)'.
Using "Variant To Flattened String" gives me an array of
integers for
the type string: 6,132,1 and nothing in the data string.
Any ideas?
Regards,
Adrian.

Nghtcrwlr wrote:
Should I not post this question in LabVIEW thread?
You originally posted this in the Breakpoint board. I had the moderator move it to the LabVIEW board.
Use the context help (Ctrl+H to toggle it on/off). You will notice if you put your cursor over the Variant to Data node that it explains that you have to supply a data type to convert to. You can wire anything into the data type, such as an array of doubles. If you don't supply a type, it defaults to a variant.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines

Variant Data Type

Hi,
In Oracle do we have Variant Data Type that can store any type of data and we don't have to use conversion functions to access them.
Thanx

9i introduced the ANYDATA datatype, which sounds like what you want. Check the SQL Reference manual.
Cheers, APC

Flatten / Unflatten to String: Losing Variant Data (Example Provided)

This is a simple one (I hope). When I take a cluster (which has a variant array as an element), I loose the variant data in the flatten/unflatten process. The simple panel and diagram are below. Where did the variant data go?

I think I may have found the issue. The problem VI is attached ("test1.vi"). The variants in this example are actually Database Variants. If I use the database type information to convert these variants to a normal variant, then the flatten to/from string works properly.
Please see the attached "DB Variant to FlatString.vi" that fixes the problem. I'm learning all the time - just very slowly!
Attachments:
test1.vi ‏17 KB
DB Variant to FlatString.vi ‏64 KB

Variant Data vs Flattened to String

Hi All,
I haven't worked much with the variant data type in LabVIEW and after reading some basics about it, I am wondering what is the basic difference between a variant data type and a flattened string.
I read somewhere that variant data types also contain the meta data which includes the type of the data it has and still we have to wire the data type to the function "Variant to Data'. Why?
What is the use case of variant data type? I am basically thinking of a use case where flattened string can't do a job what variant data type can do.
Thanks,
Ritesh
Solved!
Go to Solution.

[quote]
If a LabVIEW variant knows its own data type, why must you specify a data type in the Variant to Data function? Why can the variant not just unflatten itself? This is by design rather than by necessity. Variants must fit within the existing LabVIEW paradigm, namely that the data type of every wire is defined at design time. If a variant unflattened itself, what color would the wire be? While it is understandable that LabVIEW does not allow a variant to unflatten itself, LabVIEW needs a function that returns the data type of the variant as an enumerated type, similar to the VarType function in Visual Basic. Without any way to check data types before attempting a conversion, the only recourse is to guess an acceptable data type and then check for an error when the conversion fails.
[/quote]
http://www.ni.com/white-paper/4998/en/
Variant to Data still faster than Flatten to String (3x Approximatelly), cause no data conversion is required.
Flatten to string: Labview make an entire data structure copy and reallocate to conversion in single memory block.
Variant to Data&colon; Labview just allocate pointer to memory allocation that actually carries the data.
With Small datatypes, that performance doesn't make any difference,but it's important to understand this concepts.
PS: Sry for bad english. I'm brazilian.
"In theory, theory and practice are the same. In practice, they’re not."

How to handle "Variant" data type?

I am using SQL 2000, and want to use "Variant" data type. Can I handle it in java with ODBC connection? What classes and methods need I use? Thanks a lot.

ODBC does not have a notion of variant types. This limits the use of the sql_variant data type with an ODBC driver in SQL Server 2000. In SQL Server 2000, if binding is specified, the sql_variant data type must be bound to one of the documented ODBC data types.
(Quote from http://msdn.microsoft.com/library/en-us/odbcsql/od_6_020_28yr.asp )
Possible solutions:
- CAST or CONVERT the datatype to another suitable data type in the query
OR
- Retrieve the column as a binary stream

Variant Date

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