Ni Write To File Array Code
I have used a producer-consumer based structure to provide the fastest data capture for my application. All requested data records to a file but it does not tabulate the data the way i want. I would like it to be something like this time, counter 1, counter 2, 0, 1, 1. 1, 2, 2 . at the moment it is producing a file like this time, counter 1
fileAction int Specifies the location in the file to begin writing data if the named file already exists. The choices are as follows VAL_TRUNCATE Positions the file pointer at the beginning of the file and deletes the prior file contents. VAL_APPEND All write operations append data to the file. VAL_OPEN_AS_IS Positions the file pointer at the beginning of the file but does not
2. You will be asked to choose the file where you want to write data. Select the file and click ok. 3. After running for few seconds, stop execution and navigate to the directory where you stored the file. 4. Notice how the header is being written . Additional Information or References. Note the use of '92' Codes Display in the string constant
Write Delimited Spreadsheet VI Converts a 2D or 1D array of strings, signed integers, or double-precision numbers to a text string and writes the string to a new byte stream file or appends the string to an existing file. Wire data to the 2D data input or 1D data input to determine the polymorphic instance to use or manually select the instance. Read Delimited Spreadsheet VI Reads a specified
Solution You can write your n-dimensional array to a file using the Write to Binary File function by wiring the array into the data input terminal. When reading back this file, use the Read from Binary File function and wire an array of the same data type to the data type input terminal. Both of these function are available in LabVIEW 8.0 and later and can be found on the File IO pallette.
Overview This example demonstrates formatting timestamps and saving them to a file that can be imported into Excel. Description This VI outputs an array of Value and Time Stamp data to a .csv file for importing into Excel. Requirements LabVIEW 2012 or compatible Steps to Implement or Execut
I am collecting samples from two channels on a NI-DAQ-Device. The DAQmx Read-VI outputs a 2D array, where each row represents one channel. I want to write this data to a file in the following format sample 1 from ch1 sample 1 from ch2. sample 2 from ch1 sample 2 from ch2. etc etc Is there an easy way to do this? Thanks!
Solution The Write to Measurement File Express VI can write data to a text-based measurement file .lvm, a binary measurement file with headers .tdm, a binary measurement file without headers .tdms, or to a Microsoft Excel file .xlsx. This text-based measurement file is a tab-delimited text file that you can open using a spreadsheet or text-editing application.
To write 1D or 2D array data to a spreadsheet file one time, use the Write Delimited Spreadsheet File VI. To write data of different data types and of any dimension, use the Array to Spreadsheet String function. If you require multiple write operations, use a disk streaming programming pattern to stream data to spreadsheet files.
These two methods include the quotWrite to Measurement Filequot Express VI and the quotWrite to Spreadsheet File.viquot function block. Description This VI creates a user defined amount of random data in the form of random numbers. It then takes the data gathered and writes this data to a file. The format of the file can be specified in the Express VI.