To read data in a file and to post data in a graph

hello,
I have a textfile and I want to read the data and to post them in a graph. In my textfile, I have 3 column and each column represents a curve.
Thank you.

Hi
Just use the "read spreadshee from file.vi" (See attachment).
Hope this helps.
Thomas
Using LV8.0
Don't be afraid to rate a good answer...
Attachments:
LoadDataToGraph.vi ‏19 KB

Similar Messages

Reading through a text file and then sorting

I'm having a lot of problems with this.
I have to read through a text file and I have to split the string up so that it is seperated into individual tokens. A line from the text file looks like this. addEvent(new Bell(tm + 9000)). I have to grab the addEvent, new, Bell, tm and 9000 and store it in a linkedlist. After reading through the whole text file I have to sort the the linked list based on the number. ie: 9000. Is there any way to do this? I currently break up the text file using a StringTokenizer object but then i am uncertain on how to add it to a linked list and then sort each line based on the number. Any help would be appreciated.
Joe

Sorry to bother you Ben but I just can't get my head wrapped around this. Here is exactly what I have to do:
After reading, Events must be stored in the EventSet according to the time they are to occur. Assume that no time number is more than 8 digits long. Restart() must be able to deal appropriately with any order of the Events. To accomplish this have Restart() save the relevant Event information in an LinkedList of strings and sort the Events by time before adding each event to EventSet. Use the <list>.add() to set up your linked list. This is shown in c09:List1.java and Collections.sort(<list>) shown in c09:ListSortSearch. Modify the Bell() to output a single "Bing!". When you read in a Bell event generate the appropriate number of Bell events as indicated by rings. These must be set to the correct times. This is an alternative to generating the new Bell events within Bell(). It will allow them be sorted into their correct time sequence. At this point the output of the program should be identical the original program.
After the intitial start, when restarting Restart() must provide to the user the option to recreate the EventSet from the linked list or read in a new file (supplied by the user). This must be achieved by prompting the user at the console. Please also allow the user the option to quit the program at this stage.
Main Program Code:
public class GreenhouseControls extends Controller
private boolean light = false;
private boolean water = false;
private String thermostat = "Day";
private boolean fans = false;
     private class FansOn extends Event
          public FansOn(long eventTime)
               super(eventTime);
          public void action()
          // Put hardware control code here to
          // physically turn on the Fans.
          fans = true;
          public String description()
               return "Fan is On";
     private class FansOff extends Event
          public FansOff(long eventTime)
               super(eventTime);
          public void action()
          // Put hardware control code here to
          // physically turn off the Fans.
          fans = false;
          public String description()
               return "Fans are Off";
     private class LightOn extends Event
          public LightOn(long eventTime)
               super(eventTime);
          public void action()
               // Put hardware control code here to
               // physically turn on the light.
               light = true;
          public String description()
               return "Light is on";
     private class LightOff extends Event
          public LightOff(long eventTime)
               super(eventTime);
          public void action()
               // Put hardware control code here to
               // physically turn off the light.
               light = false;
          public String description()
               return "Light is off";
     private class WaterOn extends Event
          public WaterOn(long eventTime)
               super(eventTime);
          public void action()
               // Put hardware control code here
               water = true;
          public String description()
               return "Greenhouse water is on";
     private class WaterOff extends Event
          public WaterOff(long eventTime)
               super(eventTime);
          public void action()
               // Put hardware control code here
               water = false;
          public String description()
               return "Greenhouse water is off";
     private class ThermostatNight extends Event
          public ThermostatNight(long eventTime)
               super(eventTime);
          public void action()
               // Put hardware control code here
               thermostat = "Night";
          public String description()
               return "Thermostat on night setting";
     private class ThermostatDay extends Event
          public ThermostatDay(long eventTime)
               super(eventTime);
          public void action()
               // Put hardware control code here
               thermostat = "Day";
          public String description()
               return "Thermostat on day setting";
     // An example of an action() that inserts a
     // new one of itself into the event list:
     private int rings;
     private class Bell extends Event
          public Bell(long eventTime)
               super(eventTime);
          public void action()
               // Ring every 2 seconds, 'rings' times:
               System.out.println("Bing!");
               if(--rings > 0)
          addEvent(new Bell(System.currentTimeMillis() + 2000));
          public String description()
               return "Ring bell";
     private class Restart extends Event
          public Restart(long eventTime)
               super(eventTime);
          public void action()
               long tm = System.currentTimeMillis();
               // Instead of hard-wiring, you could parse
               // configuration information from a text
               // file here:
          try
          BufferedReader in = new BufferedReader(new FileReader("Event Config.txt"));
          String str;
               String[] l1 = new String[5];
               LinkedList l2 = new LinkedList();
          while((str = in.readLine()) != null )
                    StringTokenizer st = new StringTokenizer(str, "(+); ");
                    int nIndex = 0;
                    while (st.hasMoreTokens())
                         l1[nIndex] = st.nextToken();
                    //System.out.println(st.nextToken());
                         nIndex++;
                    l2.add(l1);
               String[] s1 = (String[])l2.get(1);
               for(int i = 0; i < s1.length; i++)
                    System.out.println(s1);
               Comparator comp = s1[4];
               Collections.sort(l2, comp);
          in.close();
          catch (IOException e)
rings = 5;
addEvent(new ThermostatNight(tm));
addEvent(new LightOn(tm + 1000));
addEvent(new LightOff(tm + 2000));
addEvent(new WaterOn(tm + 3000));
addEvent(new WaterOff(tm + 8000));
addEvent(new Bell(tm + 9000));
addEvent(new ThermostatDay(tm + 10000));
// Can even add a Restart object!
addEvent(new Restart(tm + 20000));*/
public String description() {
return "Restarting system";
public static void main(String[] args) {
GreenhouseControls gc =
new GreenhouseControls();
long tm = System.currentTimeMillis();
gc.addEvent(gc.new Restart(tm));
gc.run();
} ///:~
Examples File:
addEvent(new ThermostatNight(tm));
addEvent(new Bell(tm + 9000));
addEvent(new Restart(tm + 20000));
addEvent(new LightOn(tm + 1000));
addEvent(new WaterOn(tm + 3000));
rings = 5;
addEvent(new FansOn(tm + 4000));
addEvent(new LightOff(tm + 2000));
addEvent(new FansOff(tm + 6000));
addEvent(new WaterOff(tm + 8000));
addEvent(new WindowMalfunction(tm + 15000));
addEvent(new ThermostatDay(tm + 10000));
EventSet.java Code:
// This is just a way to hold Event objects.
class EventSet {
private Event[] events = new Event[100];
private int index = 0;
private int next = 0;
public void add(Event e) {
if(index >= events.length)
return; // (In real life, throw exception)
events[index++] = e;
public Event getNext() {
boolean looped = false;
int start = next;
do {
next = (next + 1) % events.length;
// See if it has looped to the beginning:
if(start == next) looped = true;
// If it loops past start, the list
// is empty:
if((next == (start + 1) % events.length)
&& looped)
return null;
} while(events[next] == null);
return events[next];
public void removeCurrent() {
events[next] = null;
public class Controller {
private EventSet es = new EventSet();
public void addEvent(Event c) { es.add(c); }
public void run() {
Event e;
while((e = es.getNext()) != null) {
if(e.ready()) {
e.action();
System.out.println(e.description());
es.removeCurrent();
} ///:~
Event.java Code
abstract public class Event {
private long evtTime;
public Event(long eventTime) {
evtTime = eventTime;
public boolean ready() {
return System.currentTimeMillis() >= evtTime;
abstract public void action();
abstract public String description();
} ///:~
Is this problem easier than I think it is? I just don't know what to add to the linkedList. A LinkedList within a linkedList? I find this problem pretty difficult. Any help is muchly appreciated.
Joe

Help needed regarding reading in a text file and tokenizing strings.

Hello, I require help with a task I've been set, which asks me to read in a text file, and check the contents for errors. The text file contains lines as follows.
surname:forename:1234:01-02-06
I can read in the file, but dont know how to split the strings so each token can be tested (ie numbers in the name tokens)
However, I am not allowed to use regex functions, only those found in java.io.*
I think i should be putting the tokens into an array, but have had no luck so far in doing so. Any help would be appreciated.

public class Validator {
     public static void main(String args[]) {
          String string = "Suname:Forename:1234:01_02-06";
          String stringArray[] = string.split(":");
          System.out.println (validateLetters(stringArray[0]));//returns true
          System.out.println (validateNumbers(stringArray[3]));//returns false
     static boolean validateLetters(String s) {
             for(int i = 0; i < s.length(); i++) {
             char c = s.charAt(i);
             if ((c < 'A' || c > 'Z') && (c < 'a' || c > 'z')) {
                     return false; //return false if one of characters is other than a-z A-Z
             }//end if
             }//end for
             return true;
     }//end validateLetters
     static boolean validateNumbers(String s) {
             for(int i = 0; i < s.length(); i++) {
             char c = s.charAt(i);
             if ((c < '0' || c > '9') && (c != '-')) {
                     return false; //return false if one of characters is other than 0-9 or -
             }//end if
             }//end for
             return true;
     }//end validateNumbers
}

Reading from a text file and displaying the contents with in a frame

Hi All,
I am trying to read some data from a text file and display it on a AWT Frame. The contents of the text file are as follows:
pcode1,pname1,price1,sname1,
pcode2,pname2,price2,sname1,
I am writing a method to read the contents from a text file and store them into a string by using FileInputStream and InputStreamReader.
Now I am dividing the string(which has the contents of the text file) into tokens using the StringTokenizer class. The method is as show below
void ReadTextFile()
                    FileInputStream fis=new FileInputStream(new File("nieman.txt"));
                     InputStreamReader isr=new InputStreamReader(fis);
                     char[] buf=new char[1024];
                     isr.read(buf,0,1024);
                     fstr=new String(buf);
                     String Tokenizer st=new StringTokenizer(fstr,",");
                     while(st.hasMoreTokens())
                                      pcode1=st.nextToken();
                           pname1=st.nextToken();
          price1=st.nextToken();
                          sname1=st.nextToken();
     } //close of while loop
                } //close of methodHere goes my problem: I am unable to display the values of pcode1,pname1,price1,sname1 when I am trying to access them from outside the ReadTextFile method as they are storing "null" values . I want to create a persistent string variable so that I can access the contents of the string variable from anywhere with in the java file. Please provide your comments for this problem as early as possible.
Thanks in advance.

If pcode1,pname1,price1,sname1 are global variables, which I assume they are, then simply put the word static in front of them. That way, any class in your file can access those values by simply using this notation:
MyClassName.pcode1;
MyClassName.pname1;
MyClassName.price1;
MyClassName.sname1

Reading in a binary file and displaying an array correctly

I am teaching myself Labview 7.1 and what I am trying to do is read in a text file of binary digits 10011001, 11011101 etc and then output these to a series of leds (boolean array) as well as to another array to display what was read in. I can get this to happen when I format the text file as 1,0,0,1,1,0,0,1 but then the array is 1 column by 8 rows (is this a 1by8 array) I want to read this data in as 10011001 displayed on 1 row and then the next row of the array to be 11011101, it displays 11111111 if I go above 3 digits, I know this is just a problem with binary versus decimal numbers, how can I format the input file so it is read in as 8-bit binary?
Thank you in advance,
Dan Ziehm

Read the text file as string, then pass it through "spreadsheet string to array" with "," as delimiter, %b as format and an U8 array as type. I made a quick demo, see attached code image.
LabVIEW Champion . Do more with less code and in less time .
Attachments:
binaries.gif ‏45 KB

Read from a .db file and use the values within a program

each account has 3 values.. (password, balance,id_number)
my .db file contains the following.
pass201 250 9885 pass202 300 5547 pass203 700 1123
(this is 3 accounts)
I need to be able to read from this file and use each attribute within my program... HELP!

String[][] accounts = null;
try
     // Open a file input stream
     FileInputStream fileContents = new FileInputStream("filename");
     byte[] data = new byte[fileContents.available()];
     fileContents.read(data);
     fileContents.close();
     String contents = new String(data);
     StringTokenizer values = new StringTokenizer(data); // using space character as delimiter
     // Using 3 values per line
     int lines = (int)(values.countTokens()/3);
     int columns = 3;
     accounts = new String[lines][columns];
     for(int i=0; i<lines; i++)
          for(int j=0; j<columns; j++)
               accounts[i][j] = values.nextToken();
catch(Exception error)
     // debug stuff
}

XI to read the action xml file and create a SAP notification in PM

Hi All
I am new to XI world can you please help me in doing this scenario.
I have to read an XML file and create a Notification in PM module of SAP.
Step by Step help would be great.
Thanks in Advance
Sai

Hi Sai,
To send data from XML file to SAP (any module) there are 2 ways..
1. File to IDoc and
2. File to RFC...
first Identify the concerned BAPI or IDOC for CREATION OF
NOTIFICATION ...then do the scenarios..
for Step by stp process go through this link...
New to XI
regards,
Ansar.

I just want to read in a csv file and send it to an instrument at 1 Hz per line

I want to read in a csv file that has pwr levels given at 1 Hz and append this using a format into string to the signal generator at 1 Hz. I just have never read in an entire file to automate the procedure. Thanks!

duplicate post
Please give time for people to respond.

Help with reading in a text file and arrays

I need to read in a text file with info like this for example
dave
martha
dave
billy
I can read the information into an array and display the names but what I need to do is display how many times the same name is in the file for example the output should be
dave 2
martha 1
billy 1
How can I accomplish this? Would I use a Compareto Method to find
duplicate names?

Hi,
I would recommend storing them in a Hashtable.. something like this:
Hashtable names = new Hashtable() ;
String s ;
while( ( s = bufferedReader.readLine() ) != null ) {
    if ( names.contains( s ) ) {
       names.put( s , new Integer( names.get(s)+1 ) ) ;
    else {
       names.put( s , new Integer( 1 ) ) ;
}Then the hashtable will contain a set of keys and values, which are the names and counts respectively.
Kenny

Reading from a txt file and storing into a list

i want to read a list of counters(String) which are there in a flat txt file and store them into a List.
Any suggestion will be helpful
sanjeev

Try this
try {
          FileReader fr = new FileReader("C:/abc.txt");
          BufferedReader br = new BufferedReader(fr);
          String record = null;
          while ((record = br.readLine()) != null)
               System.out.println(record );

Help! Want to read from a xl file and get an output voltage value!!!

Hello..
I`m a beginner, so please help..
My program should output an voltage value that is read from an xl-file with one collum. The most important is that each values in the xl graph should be read per iteration. So that the file is read over time. I want to use this xl file to controll the output signal over time.
Can anyone show me how this VI would look like, and what would the xl file look like??

The easiest way to do this is to save your Excel file as a comma or tab separated text file and not the native Excel format. Then you can use Read From Spreadsheet File (on the File I/O palette). Using this, you can read the file all at once and then just have a 1D array that you can wire to a while or for loop so that with each iteration of the loop, you get one element in the array. A for loop automatically indexes an input array. Reading the file all at once will be more effecient that reading the file line by line.

How to read local large JPEG files and display into Images Tile

Hi all,
I can read the local multiple files by FLEX/AIR FileListEvent
and loader to read the large JPEG files but cannot display them
into a TileList. Since it is a number of images files, how can I
put them into a thumbnail TileList.
Please kindly advise.
Regards,
Billy

1. So I would like to know which is the {color:#3366ff}best way to load local images in ImageView{color}.I'm no expert, but is there a reason that you are using Swing to do the loading?
2. secondly, currently the system displays all images only after the completion of creating all images. {color:#3366ff}How to display images as and when they are created.{color} So that the user has a feeling that the images are loading.JavaFX Image class let you display a lightweight placeholder, and you can bind the progress to some kind of visual indicator. I don't think you can display an image that is partially loaded.
def PATHS: String[] = [
    "C://Ariel Atom//ariel-atom-1.jpg",
    "C://Ariel Atom//ariel-atom-2.jpg",
    "C://Ariel Atom//ariel-atom-3.jpg",
    "C://Ariel Atom//ariel-atom-5.jpg"
function getImage(path: String): Image {
    Image {
        url: "file:///{path}"
        backgroundLoading: true
Stage {
    title: "Image Tiles"
    width: 1024
    height: 800
    scene: Scene {
        content: [
            Tile {
                columns: 2
                tileWidth: 400
                tileHeight: 400
                content: for (i in [0..3]) {
                    ImageView {
                        image: getImage(PATHS)

Read in a text file and parse at spaces

I need to read in a text file, then split it at the spaces (after each word)
then I would like to save each sentence (maybe as a String Buffer)
(chek each word to see if a .?! is at the end to determine the end of a sentence)
Then I need to add the word END to the end of the StringBuffer
then store each sentence as an element in an arrayList.
Please Help.

Cant you just store the entire text file into a really big String, then split it at each "."?
String text = "";
//read file into text
String[] sentences = text.split(".");

Want to Read the a txt file and put the data into the table colums.

I have a text file in which data is piped separated and I want to put the data in the table column.
Eg.
Text File Column
First_name|Last_name|address|phone_number
Database table:
first_name ,last_name,address,phone_number
It's very urgent.
Thanks For your help in advance.
Himanshu

Use sqlldr or external file.
See http://download.oracle.com/docs/cd/E11882_01/server.112/e10701/part_ldr.htm#i436326 for SQL Loader.
See http://download.oracle.com/docs/cd/E11882_01/server.112/e10595/tables013.htm#ADMIN11705 for External table.

Reading a Blob (CSV file) and displaying the contents

Hello Experts,
I’m currently working on a system that allows the users to upload an Excel spreadsheet (.xls) in the system. The upload page is a PL/SQL cartridge. Then I’ve written a Java servlet (using Oracle Clean Content) to convert the XLS into a CSV and store it back in the database. (it is stored in the “uploaded_files” table as a blob). I’m trying to create another procedure to read the contents of the blob and display a preview of the data on the screen (using an html table (will be done using cartridge)). After the preview, the user can choose to submit the data into the database into the “detail_records” table or simply discard everything.
Can anyone provide me any guidelines and/or code samples for reading the contents of a blob and displaying it as an html table? My data contains about 10 rows and 20 columns in the spreadsheet. I’ve been looking into using associative arrays or nested tables but I’m getting confused about how to implement them in my situation.
Any help is greatly appreciated.

BluShadow,
Thanks for your response. The reason that it is a blob is that we use the same table for uploaded files for several applications. Some files are text, some excel, some other formats. Hence the table has been set up in a generic sense.
However, in my procedure, I'm using
DBMS_LOB.createtemporary and
DBMS_LOB.converttoclob
Is there any way you could possibly provide an example of how to read the contents of the file?

To read data in a file and to post data in a graph

Similar Messages

Maybe you are looking for