Array to Spreadsheet suppress errors

Is there a way i can supress errors from an Array to Spreadsheet node.
If the file is open and it cant write to it then it creates an error box and the VI stops running until you click continue. I simply want it to ignore the error and keep running without writing to the spreadsheet.

Since this is not a low level File I/O VI, it does not have error terminals in/out. I would suggest you to use a low level VI set, like the "Open/Create/Replace File", Write to Text File", and the "Close File" VIs. In this way you have more options to catch and handle the error.
Or you can modify the high level "Write to Spreadsheet File" VI to have error terminals in and out (and deleting the pop-up terminal from inside)... But NEVER ever modify&save an original LabVIEW system VI, first save it under a different name and location!
See here:
http://forums.ni.com/t5/LabVIEW/How-do-I-catch-errors-from-quot-Write-to-Spreadsheet-File-quot/td-p/91166

Similar Messages

Array to spreadsheet string - remove space after delimiter

Hi
I created a Labview program to acquire a electrical signal and send it using TCP/IP.
The image in attachment shows a piece of my code. The AQ subVI was created by me to accomplish the acquisition.
However, the string that the "array to spreadsheet string" VI returns is something like this:
-0.800781^ -1.030273^ -1.098633^ -0.942383^ -0.644531^ -0.209961^ 0.258789^ 0.712891^
The VI is using the ^ character as a delimiter and it is converting commas to points as decimal separators.
Now, what i would like to do is to remove the space character between the ^ character and the sample value, simply because that is what the receiver of the TCP/IP message wants.
Can anybody help me?
Thanks in advance
Attachments:
Array to spreadsheet.png ‏7 KB

hi there
remove the space between the ";" and "%" in your format specifier.
Best regards
chris
CL(A)Dly bending G-Force with LabVIEW
famous last words: "oh my god, it is full of stars!"

Writing arrays to spreadsheet w/ timestamp

Hi. I'm trying to build an application which will write a set of thermocouple values to a spreadsheet with a timestamp at the beginning of each row. What I have so far is a countdown loop which gives me regular intervals of time. When the loop reaches zero, the set of values in a global array variable goes into an "Array to Spreadsheet String.vi" then I use the Concatenate string to put a timestamp string, a space and the spreasheet string. Since "Write to spreadsheet.vi" needs an array input, I have to use the "Spreasheet string to Array.vi" then to the "Write to Spreadsheet.vi" So what this does is writes the TC values, but the timestamp gets lost somewhere in there and it write a completely wrong value
which looks nothing like a timestamp.
I appreciate any comments on this.

In order to add a timestamp to each row, you will need to use the "write characters to file" VI. Since a spreadsheet is just a tab-delimited text file, you can use the "array to spreadsheet string" function to convert your array of data into a tab delimited string. Once you have this string, you can concatenate your time data to the start of it and write the resulting string to file.
I have created a simple example that writes randomly generated numbers to a spreadsheet every 0.5 seconds with a timestamp for each row. Hope this helps!
Attachments:
timestamp_spreadsheet.vi ‏20 KB

Deleting all elements from array and array to spreadsheet string

Hello,
I would like to write a new data file for each "recording" session without closing the VI. My problem is that the last "recording" session's data is at the top of every successive session's text file. I do not want this. I've tried to delete all rows from the array after my array to spreadsheet string function, but I think the problem is somewhere with the shift register and how the array is built. I'm not too familiar with LabView and this aspect of my interface is driving me crazy. Attached is my code and two successive data files. I have not been able to find a solution on these or the LAVA forums. Any help would be appreciated.
Also, I know there is an easier way to write this kind of streaming data, but I need to do it this way for other devices and synchronization purposes.
Attachments:
testsecond.txt ‏90 KB
test41.vi ‏80 KB
testfirst.txt ‏78 KB

A few more comments to your code:
Your loop does not have a wait, meaning it spins the empty case millions if times per second, consuming all CPU while not doing anything. Add an indicator to [i] to see.
To clear a 2D array in one case frame, just don't wire the output tunnel and set it to "use default if unwired". You'll get an empty array. No fancy tools needed.
I probably would use an event structure and also protect the data if the save dialog is canceled.
Here's a simple draft that probably requires a bit more work but should show some of the ideas.
You should also
add some protection that the VI cannot consume all available memory if it runs forever.
Create a seperate case to save the data later if the file dialog is cancelled the first time.
LabVIEW Champion . Do more with less code and in less time .
Attachments:
test41MOD.vi ‏107 KB

Trouble with array to spreadsheet string

I am having trouble with the array to spreadsheet string.
I have a 1-d array of string, the output spreadsheet string never puts a space on the first row, but all others.
example:
05:59:29.170    00000101     8        00 00 07 00 0B 0E 0D 0C
05:59:29.198    00000100     8        00 00 3A 3A 39 39 39 39
05:59:29.220    00000101     8        00 00 07 00 0B 0E 0D 0C
05:59:29.248    00000100     8        00 00 39 39 39 39 39 39
format string is %s and default tab is delimiter.
this is screwing up my program because of the "scan for string" function can't be used correctly if the spreadsheet string isnt consistent.
Any suggestions?
Thanks

You don't need to use "array to spreadheet string": You could use plain formatting for full control over the output.
Still, your observation is a bit odd. Could you attach a simple VI that shows the behavior? (Put your input array into a diagram constant).
LabVIEW Champion . Do more with less code and in less time .

\0D and \0A after array to spreadsheet string conversion

Hi guys, i currently have a VI that manipulates a couple of arrays and writes them to a config file through the config VI.
Now, i notice 1 problem whereby after my array is comma delimited and converted into a spreadsheet string, a tab and carriage return automatically appears at the end of the string. This causes my resulting config file to have \0D and \0A to appear with my keys in the config file.
I know it's got to be the array to spreadsheet string conversion that's causing the problem because i don't have such \0D and \0A problem with keys without the conversion.
How do i solve this?

The OD and OA are the carriage return and line feed and yes the functona always appends these characters at the end of each line. Probably because this function is normally used to create files that a spreadsheet can read. There are several ways to remove the extra characters. Shown below is the string reversed and the String Subset function uses an offset of two. The output of that is reversed to get a string without the CR and LF. Also shown is getting the string length, subtracting 2 and wiring that to the length input of the String Subset function.
Message Edited by Dennis Knutson on 07-26-2007 10:57 PM
Attachments:
Strip Last Two Characters.PNG ‏6 KB

Array To Spreadsheet String and DDE

I have an array (one dimensional) that I want publish as a dde topic.
So far I've been able to write all my dde components appear to be working,
with the exception of the dde set value function in conjunction with Array
To Spreadsheet String function.
Array to spread appears to parse the the array the way I want it (that is,
to create one
big string with newline chars seperating tokens) but it's output does not
seem to set correctly. If I look at the value right after I convert it to
a spreadsheet
string its good, but if I check it (once it's been loaded) using
DDE Srv Check Item it comes up blank.
Does anyone know what I'm doing wrong? I'm feeding the output of array
to spread driectly into DDE Srv Set Item, shou
ld it be going through another
function first? Or am I using the wrong function to parse my array? My
DDE
server seems to work ok if I just use single string values, is there something
about using arrays that I should be aware of? Any feedback is appreciated.

Hi aschipfl,
some thoughts about your suggestion:
- When you want to suggest improvements to LabVIEW you should post in the Idea Exchange.
- NI will not change the behaviour of functions existing for a long time…
- NI will probably update the LabVIEW help for that function…
- a spreadsheet string needs some kind of delimiter, what's the purpose of creating a spreadsheet string without them?
When you really need a "Array to Spreadsheet String" without delimiters you could take this approach:

Array To Spreadsheet String, Empty Delimiter

The Array To Spreadsheet String function does not accept an empty Delimiter, it uses the Tab character in such case.
The same is true for the Spreadsheet String To Array function (but of course this function cannot work without a Delimiter).
I would appreciate one of the following options:
to allow an empty separator for both functions (for Array To Spreadsheet String this can easily work obviously; for Spreadsheet String To Array you might see an empty string delimiter between each two adjacent characters similar to the Search and Replace String function with an empty search string);
to document that behaviour properly;
I would prefer the first option espacially for the Array To Spreadsheet String function. What do you think?

Hi aschipfl,
some thoughts about your suggestion:
- When you want to suggest improvements to LabVIEW you should post in the Idea Exchange.
- NI will not change the behaviour of functions existing for a long time…
- NI will probably update the LabVIEW help for that function…
- a spreadsheet string needs some kind of delimiter, what's the purpose of creating a spreadsheet string without them?
When you really need a "Array to Spreadsheet String" without delimiters you could take this approach:

Write array to spreadsheet string

Hi,
I have 3 numeric arrays and 1 string array. I am try to use the function write array to spreadsheet string. What is the easy way to do this, since I have both numeric and string, I can't create a 2d array directly?
Yik
Kudos and Accepted as Solution are welcome!
Solved!
Go to Solution.

It depends how you want the file to store the data.
Attached is an example of two methods mentionned above. You can change the formatting so that you have the data on the same line or different lines.
There are many solutions depending on exactly what you want to accomplish.
--- didn't expect to see so many replies so quickly ---
Most people recommend converting the numeric array to string array first. I offer an alternative or a choice of both..
Attachments:
exampleOfWriteDiffArrayToSprdsht.png ‏28 KB

Suppress error dialog in automator

hi,
sometimes my automator app outputs an error dialog "watchmedo encountered an error".
this blocks the app to be restarted automatically (I schedule my apps on a repeated basis), as the app is still open.
how can I suppress error dialogs like this? or can I quit the app once an error is encountered?
those error dialogs (which only go away by clicking OK) kill the possibility to restart the app automatically ...
thanks.

Hmmm - it is supposed to throw an error when getting the ID. Another way would be to assign the ID to a variable, although you will need to enclose your application terms in a using terms from statement so that the compiler will know what application dictionary to use:
set theID to "com.apple.missingSafari" -- add/remove "missing" to test
try
    using terms from application "Safari"
        tell application id theID -- error if the ID doesn't exist
            get URL of tab 1 of window 1 -- or whatever
        end tell
    end using terms from
on error errmess
    beep
    log errmess
end try

Suppress error message in 10g

using
:system.message_level:=25;
commit;
:system.message_level:=0;
i can suppress error message in froms 9i but when i run that form in iAS10g
the message "no changes to save" does not suppress.

It's not a good idea to suppress error messages. If there is a problem, then you (or user) won't know.
If you are using the system.message_level only to try and suppress, the "no changes to save" message, then a better way is to check if there are changes before doing the commit. Like this:
IF :System.Form_Status = 'CHANGED' THEN
Commit_Form;
END IF;

Array To Spreadsheet String -- Convert EOL Option

The Array To Spreadsheet String and Spreadsheet String To Array functions should provide an option for (not) converting EOL (end-of-line) to platform-dependent ones. I am thinking of something similar to the Write/Read Text File options where you can place a checkbox in the context menu "Convert EOL". As per default such checkbox need to be checked for compatibility reasons.
Possibly another option/checkbox for not appending the final EOL would be nice, maybe "Final EOL" checked per default as well.

Hi aschipfl,
some thoughts about your suggestion:
- When you want to suggest improvements to LabVIEW you should post in the Idea Exchange.
- NI will not change the behaviour of functions existing for a long time…
- NI will probably update the LabVIEW help for that function…
- a spreadsheet string needs some kind of delimiter, what's the purpose of creating a spreadsheet string without them?
When you really need a "Array to Spreadsheet String" without delimiters you could take this approach:

Having trouble converting array to spreadsheet string, storing the file and coverting back to array with complex numbers

I am working with a network analyzer. I have arrays made of 5 columns the first consisting of an integer and the next four consisting of complex numbers. I am converting the array into a spreadsheet string and then saving the file using the write characters to a file VI. That seems to work well as when I open the file in Excel all the data is there. However when I try to reverse the process, open file and convert back to array, I loose some of the data. Specifically the imaginary parts of my complex numbers are all going to zero. I have narrowed down the problem to be in the conversion from spreadsheet string to array and vice versa. I
think the problem may be with the 'format' input to the VI. I do not have an adequate resource for this so I am not sure what to put in to accomplish my task. Any takers?

Hi Biz
I don't think there is a direct way of converting a complex number to a
string, so when you convert the array to a spreadsheet string, the
numbers would be converted to real data.
However, you could try separating the real and imaginary parts using the
"Numeric: Complex to Re/Im" function, and then store these - either in
separate files or in adjacent columns/rows in the same file. Then, when
you read in the data again, use the "Numeric: Re/Im to Complex" function
to put the two "halves" together.
If you actually want Excel to interpret the numbers as imaginary, then
you'll probably want to create a string for each complex number of the
form "Re + Im*i" (after separating the Re and Im parts), by using
"String:Format into String" with 2 numeric inputs and the format string
"%f+%fi".
Reading the data back into Labview then would require splitting the
string into the 2 pieces by using "Stringcan from String" with 2
numeric outputs (smae precision as original numbers specified by the 2
Default Value inputs) and the same format string "%f+%fi", and then using
the above-mentioned "Numeric: Re/Im to Complex" function. It worked for
me, so if you can't follow what I am describing, send me an email and I
can email you what I did (LV 5.1.1).
Paul
Biz wrote:
> Having trouble converting array to spreadsheet string, storing the
> file and coverting back to array with complex numbers
>
> I am working with a network analyzer. I have arrays made of 5 columns
> the first consisting of an integer and the next four consisting of
> complex numbers. I am converting the array into a spreadsheet string
> and then saving the file using the write characters to a file VI. That
> seems to work well as when I open the file in Excel all the data is
> there. However when I try to reverse the process, open file and
> convert back to array, I loose some of the data. Specifically the
> imaginary parts of my complex numbers are all going to zero. I have
> narrowed down the problem to be in the conversion from spreadsheet
> string to array and vice versa. I think the problem may be with the
> 'format' input to the VI. I do not have an adequate resource for this
> so I am not sure what to put in to accomplish my task. Any takers?
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School of Physiotherapy, Curtin University of Technology
Selby Street, Shenton Park, Western Australia, Australia. 6008
email: [email protected]
Tel. +61 8 9266 4657 Fax. +61 8 9266 3699
"Everyone who calls on the name of the Lord will be saved." Romans 10:12
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Jesus." Romans 3:23-4

Array Dimension Too Big Error

Hi,
For the following declaration I am getting "Array Dimension Too Big" error with Forte C Compiler on Solairs 8.
double try[23200][23000];
What is the mx dimension possible? and Where do I find such info on boundary conditions??
Regards,
Gurudatta

Hi There,
The legal limit of the array is whatever the hardwareand swap space will support.
You are asking for 8*23000*20000 bytes /1024/1024 = 3509.52 megabytes = 3.43 gigabytes.
You are declaring this much allocation locally via
automatic array in your example. You'll have to define a stack this size (hardly practical).
If you ask for this much memory with malloc() which is a much better idea, you'll still need to have enough swap.
You can also do mmap(...,MAP_NORESERVE,...) in which case you may not even need the swap to support it.
It all depends on what you are doing and why.
.....jagruti
Developers Technical Support
Sun Microsystems, http://www.sun.com/developers/support

Force copy/suppress error messages?

Hi all,
I'm trying to copy my extremely fragmented 40gb photo library from an extremely slow external HD to my mac HD. After it spends hours getting halfway there, I get an error saying it can't copy, and the operation fails. Is there any way I can copy to have it suppress error messages, skip the problematic files, and copy the whole batch without stopping?
Thanks!
Alec

Without a 3rd Party APP, I use Tri-Backup for this, you likely will just have to keep pluggibg away, or try smaller chunks, or perhaps Carbon Copy Cloner...
http://www.bombich.com/software/ccc.html

Array to Spreadsheet suppress errors

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