How to convert an array of numbers into a time signal?
I have an array of 512 data points. I want to convert this array into a time domain signal (the one with the brown color). How would I do this? Please let me know soon...Thanks!
If you are referring to waveform data type, use the "build waveform" function as illustrated in the attached vi. Also check LabVIEW help waveform example for more sample vi.
Attachments:
sample_vi.vi 30 KB
Similar Messages
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How to convert an array of bits into an array of bytes?
If I have an array of 1s and 0s, how can I pack them
into an array of bytes (8 bits)?
Thanks.NI recommends to get rid of 4.x mode (Quote from the help file: "National Instruments recommends reworking any application that uses the Convert 4.x Data mode as a long term solution."). For this reason, I have attached an alternative example to give you some ideas.
(The previous example (using 4.x type cast) is actually slightly flawed, because for some reason it only produces even sized output arrays (why???) so you would need to trim the resulting array as a function of the input array size.)
LabVIEW Champion . Do more with less code and in less time .
Attachments:
OnesAndZeroesU8v2.vi 43 KB -
How to convert an array of Integers into String
So how can an array of integers be converted into a string?
As I do not have a javac with me now, I hope you guys could help.
Can it be done this way:
int [] value = new int[] {2,3,4,5,6,7}
String strValue = "";
for (i=0; i<value.length-1; i++)
strValue += value;Instead of working with Strings, I would suggest you use a StringBuffer. It will improve memory utilization.
Like this:
int [] values = new int[] {2,3,4,5,6,7};
StringBuffer sbTmp = new StringBuffer();
final int size = values.length;
for (i = 0; i < size; i++) {
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sbTmp.append(intStr);
String strValues = sbTmp.toString(); -
Convert an array of strings into a single string
Hi
I am having trouble trying to figure out how to convert an array of strings into a single string.
I am taking serial data via serial read in a loop to improve data transfer. This means I am taking the data in chunks and these chunks are being dumped into an array. However I want to combine all elements in the array into a single string (should be easy but I can't seem to make it work).
In addition to this I would also like to then split the string by the comma separator so if any advice could be given on this it would be much appreciated.
Many Thanks
Ashley.Well, you don't even need to create the intermediary string array, right? This does exactly the same as CCs attachment:
Back to your serial code:
Why don't you built the array at the loop boundary? Same result.
You could even built the string directly as shown here.
Message Edited by altenbach on 12-20-2005 09:39 AM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
autoindexing.png 5 KB
concatenate.png 5 KB
StringToU32Array.png 3 KB -
Converting a string of numbers into an array of booleans
For a homework assignment, I need to convert a string of numbers into an array of booleans. The string is a bunch of random numbers (0-9) in sequence, with no spaces. It looks something like this: 0123452348949230740329817438120947392147809231419. I need to make it so that each even number represents a "True" boolean and so that each odd number represents a "False" boolean. I think that I first need to convert each element of the string into a number, and then use a case structure (or something) to say, for each element of the array, "If even, then true. If odd, then false," but I could be wrong. Any suggestions?
billko wrote:
Hooovahh wrote:
billko wrote:
Sounds reasonable. Think about the definition of "odd" and "even" and it will make life a lot easier.
I know you are trying to be vague but I'd like to give a key hint. Use the Quotient and Remainder function.
LOL maybe that was one of the objectives of the homework.
To be fair it sounds like there is more work that is needed. A new user of LabVIEW will have a hard time figuring out how to process each character one at a time when it isn't in an array.
It's just that most people (me at least) stopped thinking about division with quotient and remainder after basic algebra. I then of course changed my way of thinking when I used LabVIEW. Still most of the time when you use division you want to know the fractional part as a decimal. Thinking this way makes the problem more difficult then it needs to be.
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How to convert from array to graph ?
how to convert from array to graph ?
A graph will accept an array of numbers. Do you have an example of what you are looking for?
And since somebody mentioned tutorials...
3 Hour Introduction
6 Hour Introduction
LabVEW Basics
Self Paced training for students
Self Paced training beginner to advanced, SSP Required
LabVIEW Wiki on Training
Learning NI
Getting Started with NI Products
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines -
How do i convert a portion of day into a time?
How do i convert a portion of day into a time, without dividing and modding the number myself?
For example, i calculated solar noon UTC to be .733409047. Adding that to the date gives the correct answer:
SQL> SELECT TO_DATE('1/1/2012', 'DD/MM/YYYY') + .733409047 FROM Dual;
TO_DATE('1/1/2012',
01/01/2012 17:36:07
A few questions, to actually understand this.
Is .733409047 implicitly converted? If so, to what datatype?
If i want HH:MM:SS does it need to be converted to a date, and then TO_CHAR? Or can the decimal be directly converted?
I'm currently trying to understand INTERVAL.
SQL> select interval '.5' day from dual;
select interval '.5' day from dual
ERROR at line 1:
ORA-01867: the interval is invalid
So, i'm obviously misunderstanding it. Can it be used here?Hi,
Brian Tkatch wrote:
How do i convert a portion of day into a time, without dividing and modding the number myself?
For example, i calculated solar noon UTC to be .733409047. Adding that to the date gives the correct answer:
SQL> SELECT TO_DATE('1/1/2012', 'DD/MM/YYYY') + .733409047 FROM Dual;
TO_DATE('1/1/2012',
01/01/2012 17:36:07
A few questions, to actually understand this.
Is .733409047 implicitly converted? If so, to what datatype?No, there is no conversion going on here, just Date Arithmetic .
In Oracle, if d is a DATE and n is a NUMBER (not necessarily an integer, and not necessarily positive), d+n is the DATE that is n days later than d.
If i want HH:MM:SS does it need to be converted to a date, and then TO_CHAR? Or can the decimal be directly converted?Sorry, I don't understand. Are you saying that you want to do something like date arithmetic, but instead of using a number like .733409047 (meaning about .73 of a day), you want to pass a string like '17:36:07' (meaning 17 hours, 36 minutes and 7 seconds)? If so, INTERVAL DAY TO SECOND is probably your best bet. (It looks like you're already thinking along these lines.)
I'm currently trying to understand INTERVAL.
SQL> select interval '.5' day from dual;
select interval '.5' day from dual
ERROR at line 1:
ORA-01867: the interval is invalid
So, i'm obviously misunderstanding it. Can it be used here?You can only use integers like that. If you want to use any number, then use date arithmetic to add to (or subtract from) a DATE, or use NUMTIDSINTERVAL to produce an INTERVAL DAY TO SECOND:
SELECT NUMTODSINTERVAL (.733409047, 'DAY') AS intrvl
FROM dual;Output:
INTRVL
+000000000 17:36:06.541660800
I hope this answers your question.
If not, post a little sample data (CREATE TABLE and INSERT statements), maybe about 5 rows, and also post the results you want from that data.
Explain, using specific examples, how you get those results from that data.
Always say which version of Oracle you're using. -
How to convert Oracle reports previewer output into delimited file.
How to convert Oracle reports previewer output into delimited file if the report has more than 1000 pages.
I tried with previewer option File --> Generate to file --> Delimited file, but the report engine is crashing.Not generating .TXT file.
I observed that this option is not working for more than 400 pages.
I am using Oracle reports 6i version.
Plz suggest me to generate .TXT file from Report previewer.You can specify a delimiter (a character or string of characters) to separate the data (boilerplate or field objects) in your report output in either of the following ways:
On the command line using the DELIMITER keyword.
In the Delimited Output dialog box or DelimitedData Output dialog box (displayed with File > Generate to File > Delimited or File > Generate to File > DelimitedData) in Reports Builder.
for further information goto this link
http://download.oracle.com/docs/cd/B14099_17/bi.1012/b13895/orbr_concepts2.htm#sthref760 -
How to convert JSR-168 compliant Portlets into SAP iviews
Hi All,
Its very urgent requirement for me...
<b>How to convert JSR-168 compliant Portlets into SAP Enterprise Portal supported iViews in SAP NetWeaver 2004 or 2004s.</b> Can you please tell me any tools are available for conversion or is there any another procedure to achieve this problem.
At last can we ach
Each answer will be awarded with points.
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How to convert 1D array of string to string
How to convert 1D array of string to string.
Maximus00, as Pavel indicated, there is a lesser known feature of "Concatenate Strings" that does exactly what your code is doing if the input is an array of strings. In one step! See attached image.
LabVIEW Champion . Do more with less code and in less time .
Attachments:
ConcatenateArray ofStrings.gif 7 KB -
How to convert an html/css website into muse
How to convert an html/css website into muse.
Hi,
It is not possible to convert html/css site into Muse. Muse recognizes .muse files only.
Regards,
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How to convert JSR 168 compliant Portlets into SAP supported iViews.
Hi,
How to convert JSR 168 compliant Portlets into SAP supported iViews in SAP NetWeaver 2004.
Thanks & Regards
SivaGuys,
JSR is not supported untill NW05. Please check this
/thread/176954 [original link is broken]
Akhilesh -
Hi, can anyone guide me how to convert Freehand MX for PC into Mac Version?
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You can upgrade to Mavericks free, just run the App Store program and search for Mavericks. But before you do upgrade I recommend the following:
1) make sure you have a recent backup. TimeMachine is fine.
2) Mavericks is somewhat more memory hungry than 10.7 was. You will need 4 GB of RAM and I strongly recommend 8 GB.
Go back to the Apple menu and select About this Mac - look under the OS info you just looked at. You'll see how much RAM your computer has now. Then click on the More Info button. There you will see your computer info listed as in: iMac, 21.5" mid 2010, for example. Return back with that information and we can tell you how far the computer can be upgraded.
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My PXI controller is in a lab which has intense magnetic fields that could corrupt the floppy disk used to boot the PXI controller into the LabVIEW Real-Time (RT) Operating System. How can I boot the PXI controller into real-time directly from the hard drive?
If you are using LabVIEW 5.1.2 Real-Time (RT), launch Remote System Explorer and select Disks >> Create Format Hard Drive Disk. If you have LabVIEW 6 RT, launch the Measurement and Automation Explorer (MAX) and select Tools >> RT PXI Disk Utilities >> Create Format Hard Drive Disk (LabVIEW RT 6 has not be released yet). Once you have created the disk, boot the PXI controller with the Format Hard Drive Disk, and this will format the PXI's hard drive and install the real-time OS boot loader. Now you can reboot the PXI without a floppy disk and configure the PXI using Remote System Explorer or MAX. Be aware that this will remove all information from the hard drive, including other operating systems.
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