Using Labview to download a data file
I have a time-critical problem that I'm hoping some of the experts here can help me fix. In the file download_c.vi, I am trying to download a file from a remote computer over a serial port to my Labview control computer. The file works great when the file size is small(500-700KB). Anything over this, and I have to increase the bytes for the visa read to read, and then I lose data. Eventually the file that I will be downloading will be about 600MB. I know that the way the .vi is set up, this will never work for large files, and I throw myself on the mercy of the experts here in the forums for help.
Can anyone take a look at the file that I've attached and show me how i can make this work for large files, more efficiently, and without losing my data.
Advance thanks from a beginner that is getting slightly desperate.
JDM
Attachments:
File Download.zip 46 KB
Well, my first question would be - do you have to use serial?
600 MB sounds like an awful lot for a serial connection.
Second, I have never done anything like this, and I'm not sure I understood why you're losing data and where it's being "vanishing". If you're asking the port for X bytes and the timeout is too short, you will lose your data. You might need to play with it.
But let's start with the first question I asked - does it have to be serial?
Try to take over the world!
Similar Messages
-
Use Labview to download a data file
I have a time-critical problem that I'm hoping some of the experts here can help me fix. In the file download_c.vi, I am trying to download a file from a remote computer over a serial port to my Labview control computer. The file works great when the file size is small(500-700KB). Anything over this, and I have to increase the bytes for the visa read to read, and then I lose data. Eventually the file that I will be downloading will be about 600MB. I know that the way the .vi is set up, this will never work for large files, and I throw myself on the mercy of the experts here in the forums for help.
Can anyone take a look at the file that I've attached and show me how i can make this work for large files, more efficiently, and without losing my data.
Advance thanks from a beginner that is getting slightly desperate.
JDM
Attachments:
File Download.zip 46 KBJDM.
As you can see, if you post the same question in multiple threads and multiple boards you just get people to respond for no reason. Brett's answer is almost identical to the one I gave you in the LV board and probably not far off from what you would have gotten from the others in your third thread. If you do post to multiple boards, include a link to the other thread, so people can see which answers you already recieved.
Try to take over the world! -
Am having a mental lapse here.
Using DW MX 2004 on XP
I need to create a link where a user (non computer literate)
can download a .DAT file to his.her desktop.
All i get is a "page cannot be found" error page
Does the file has to be a .exe or .zip file for it to open
the dialogue box to for user to save or open or am missing
something here?
any hints will be appreciated
ThksThis is as much a guess as a hint, but I figured that you may
be able to use
a "Force Download" script:
You don't mention what server language you're using... I use
ASP VBSCRIPT
and would use something like I've attempted to explain below:
First of all create a page called "error.asp" - the user will
be redirected
to this page if the download fails.
Then create a page called "forcedownload.asp" in the same
folder/directory
Copy and paste the following code to the forcedownload.asp
page:
=====>Begin
<% FileName = (Request.QueryString("FileName"))%>
<%
Response.Buffer=true
On Error Resume Next
'Create a stream object
Dim tfm_downloadStream
Set tfm_downloadStream = Server.CreateObject("ADODB.Stream")
tfm_downloadStream.Type = 1
tfm_downloadStream.Open
tfm_downloadStream.LoadFromFile
Server.Mappath("../../changetofilepath/"&(FileName))
If Err.number = 0 Then
Response.Clear
Response.ContentType = "application/octet-stream"
Response.AddHeader "Content-Disposition", "attachment;
filename="&(FileName)
Response.AddHeader "Content-Transfer-Encoding","binary"
Response.BinaryWrite tfm_downloadStream.Read
tfm_downloadStream.Close
Set tfm_downloadStream = Nothing
Response.End()
Else
tfm_downloadStream.Close
Set tfm_downloadStream = Nothing
Response.Redirect("error.asp")
End If
%>
=====>End
(Make sure you change
"Server.Mappath("../../changetofilepath/"&(FileName))"
to reflect the correct file path to the .dat file)
Then link to forcedownload.asp including the filename in the
URL under the
variable "FileName".
For example, the link would read something like:
"forcedownload.asp?FileName=MyFile.dat" (of course you would
change "MyFile"
according to the correct filename)
I don't know if there's some "rule" that prevents .dat files
from working
with such a script... I've never tried it, but I do use a
script similar to
the sample above for a number of different file types to be
downloaded
across a range of different websites.
Regards
David
"ositogrande" <[email protected]> wrote in
message
news:[email protected]...
> Am having a mental lapse here.
> Using DW MX 2004 on XP
> I need to create a link where a user (non computer
literate) can download
> a
> .DAT file to his.her desktop.
> All i get is a "page cannot be found" error page
> Does the file has to be a .exe or .zip file for it to
open the dialogue
> box
> to for user to save or open or am missing something
here?
> any hints will be appreciated
> Thks
> -
Using Migration Assistant to Move Data Files from one Account to New User
Is it possible or recommended to use Migration Assistant to move data files from an old user account to a new user account on the same volume/hard disk?
Migration Assitant cannot be used as a simple file transfer utility. MA can transfer an entire Home folder or entire Users folder but not individual files.
In general files in one user account cannot be moved to another user account as this would violate built-in security measures.
What you can do is to copy the files to an external device like a hard drive or flash drive. First log in to the old account. Then configure the drive to ignore preferences by Pressing COMMAND-I to open the Get Info window and check the Ignore permissions on this volume checkbox at the bottom of the window. Copy your files to the device. Log into the new account. Verify the external drive is still configured to ignore permissions (reset it, if not.) Copy the files from the external device into the Home folder of the new account. I would create a temporary folder for these files. If you still end up without the proper permissions you will need to make modifications that are easier done if all the files are in a single folder. -
Safari 5.1 using QT to download pdf document files
I selected a link in my imac mail that took me to the internet site to view a PDF , but safari 5.1 is using QT to download pdf document files. I can't adjust the size or see pass page one. I don't know what happen to the reader. Can anyone help?
I just figure out I'm in the wrong forum. Will post to safari forum.
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I had installed Aurora 21.0a2 some time last year and had only used it once. I recently uninstalled it and without knowledge that it used the same exact App Data files as Firefox does, so I removed all data. Now I have lost 100's of bookmarks... I do backup my system often but not my browser data, I had only once made a copy of my Firefox data in August 2013, so I was able to copy and paste that info, which had maybe 35-40% of my bookmarks...
I had tried Windows Recovery a couple times, it says it wasn't able to restore the data successfully each time. I had also tried Recuva, not really sure if it found the file I was searching for, so I would kindly ask any of the Forum Mods or users who would suggest this method, what "file" exactly should I search for.
I had been searching for ".default" and ".defaults" files, and any other data relating to Firefox but with no success.
Do I really have any options of recovery or ....?You should never choose to remove "personal data" when you uninstall your current Firefox version, because this will remove all profile folders and you lose personal data like bookmarks and passwords including data in profiles created by other Firefox versions.
You will have to try to recover a recent JSON backup (bookmarks-####-##-##_xxxx.json) in the bookmarkbackups folder of that removed Firefox profile folder with Recuva or another undelete utility.
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*https://support.mozilla.org/kb/Recovering+important+data+from+an+old+profile
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox
*http://kb.mozillazine.org/Backing_up_and_restoring_bookmarks_-_Firefox -
Use labview to read an Excel file to some control and add a checkbox for each row
As the subject say,I need to use labview to read an excel file,and show it in some control,such as mclb;then ,I should add an checkbox for each row,enable me to choose the row i want.What should I do ? Many Thanks.
Solved!
Go to Solution.Hi,
to answer your question:
- read an excel file
- show it in some control, such as a MCLB
- add an checkbox for each row
- choose the row you want
Hint to make it easier: I wouldn't use checkboxes, as the MCLB already allows to select rows by mouseclick…
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome -
Downloading as dat file ... each columns in NEW LINE
HI ,
Can any one help me out in this ...
example emp table having columns empid ename salary
12 AA 123
now im downloading it as a ".dat" file , its getting downloaded but all the columns are in the same line
i have tried it with chr(13) still its not getting to next line
select empid||chr(13) ||ename||chr(13)||salary from emp .. this is how i framed the query ...
in toad its displaying with square box in between the field
required is
=======
12
AA
123 .. this is how it has to downloaded in dat file
regards,
ARUMUGAMHI,
the query is working only for wordpad .. science im dow\nloading that file as a DAT file i cn open it in execle, word also but when i open in these two its displaying all the columns values in single line and not in new line
the problem when i open in wordpad is ......... the file contains tags line <table>,<td etc > h
how could i eleminate these tags and
what could be done for getting in excel and word
regards,
ARUMUGAM -
Download Binary Data File over Serial Port
I need help setting up a .vi that I can use to download a binary data file from a dos-based system. I will send the system a command, say ascii "DOWNLOAD", and then the remote system will send me a binary data file that will be approx. 600MB. I won't be doing any display/manipulation using labview, I will just need to have the option available in LV to recieve the file.
Any examples would help a programmer that is new to LV and is getting a little desperate.A VISA Read doesn't care whether the data it's getting is binary or ASCII. Where you might have problems is detecting that file transfer is complete. If you have enable termination character set to True in the VISA Configure Serial Port, the read will stop as soon as the termination character is detected. The default termination character is 0xA or a linefeed. You probably don't want to use this. If the file is terminated with a character or string of characters that you now will be unique, you can use this. If there is no unique termination character at the end of the file, the next best thing is to know the file size exactly and set the byte count of VISA Read to that number. Based on file size and baud rate, you would also need to adjust the VISA timeout value. Another way to do this is to transfer the data in pieces and write to a file as soon as the data is received. The reading of data would then be terminated when there are no more bytes available at the serial port. I've attached a LabVIEW 7.0 program that should give an idea of the last approach.
Attachments:
File Transfer.vi 57 KB -
How to use a value int the DAT file as name of the PDF file
I need to use a value present in my DAT file as name of the PDF File.
I am using the ,u argument in the Print Agent and I know this causes the pdf document to get a generic filename.
Please help me.
ThanksSee my response to this same question you posed in the Output Designer forum.
http://www.adobeforums.com/webx/.59b585c2/0 -
Connecting Pumps to PC and Using LabView to collect the data
Hi There,
I am a beginner with LabView and I want to use LabView to collect data from a Pump using RS-232.
Could anybody help me where I need to start from?
I highly appreciate your help.
Regards
MoHello moizadi,
the best place to start is definitely the excellent Example Finder built in LabVIEW (Help menu -> Find Examples...). Switch to the Search tab and enter the keyword RS-232. This way you will find nicely documented examples for other common tasks as well. You will find further tutorials and more specific examples by searching for RS-232 or serial communication keywords on NI.com search.
If you have further questions, please feel free to ask!
Daniel -
Using utl_http to download a binary file to the server disk
Hi,
I need to download a binary file from the web into the hard disk of the server.
I am using utl_http to do that. My program works on URLs that have text, but not on binary files. Does anyone have an idea how to do that?
Thanks
Rani
Here is the program I am using:
DECLARE
req utl_http.req;
resp utl_http.resp;
value VARCHAR2(32767);
fname utl_file.file_type;
BEGIN
utl_http.set_proxy('wwwproxy.myorg.com:8080');
req := utl_http.begin_request('http://www.somelocation.com/abc.zip');
resp := utl_http.get_response(req);
fname := utl_file.fopen('DBTEMP','testfile.zip','w');
LOOP
utl_http.read_line(resp, value, TRUE);
utl_file.put_line(fname,value);
END LOOP;
utl_http.end_response(resp);
utl_file.fclose(fname);
EXCEPTION
WHEN utl_http.end_of_body THEN
utl_http.end_response(resp);
utl_file.fclose(fname);
END;Try to use UTL_HTTP.READ_RAW.
-
Using Sothink video downloader, normally by default my video files are save in FLV extension. Now for whatever reason suddenly my video files are save in .ebm extension & I can't open my video file. "Save file Type As" -to select file extension does not seem to work -
It's a WEBM video file. My solution was to rename the file to have .webm extension, and play it with the latest VLC Player (2.1, but I think any from 1.1 and upper will solve it too). Just associate .ebm with VLC didn't work. I had to rename the files so VLC knew exactly what that thing was.
By the way, it worked the same way with a .eam file (!), I just renamed the extension to .webm. -
Using JDBC to write a DAT file with delimiters to a database
Hi Everybody
I am new to JDBC and i am trying out some small applications: I downloaded this small program and tried to compile it and and I got the following errors: ( I have MySql installed). I have to set the classpath for the driver. But I am not sure why I am gettting the NullPointerException though)
I will be very gratefull to your help. Thanks a lot..
Loading JDBC Driver -> oracle.jdbc.driver.OracleDriver
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at us.ilango.WriteFileToTable.<init>(WriteFileToTable.java:69)
at us.ilango.WriteFileToTable.main(WriteFileToTable.java:367)
java.lang.NullPointerException
at us.ilango.WriteFileToTable.createTable(WriteFileToTable.java:97)
at us.ilango.WriteFileToTable.main(WriteFileToTable.java:368)
Exception in thread "main"
the Program is as follows:
package us.ilango;
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.Statement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.StringTokenizer;
import java.io.FileReader;
import java.io.BufferedReader;
import java.io.IOException;
import java.util.Date;
import java.text.SimpleDateFormat;
import java.text.NumberFormat;
import java.text.ParseException;
* The following class provides an example of how to read a simple text file
* of records and then insert them into a table in a database. A text file
* named Employee.txt will contain employee records to be inserted into the
* following table:
* SQL> desc emp
* Name Null? Type
* EMP_ID NOT NULL NUMBER
* DEPT_ID NUMBER
* NAME NOT NULL VARCHAR2(30)
* DATE_OF_BIRTH NOT NULL DATE
* DATE_OF_HIRE NOT NULL DATE
* MONTHLY_SALARY NOT NULL NUMBER(15,2)
* POSITION NOT NULL VARCHAR2(100)
* EXTENSION NUMBER
* OFFICE_LOCATION VARCHAR2(100)
* NOTE: This example will provide and call a method that creates the EMP
* table. The name of the method is called createTable() and is called
* from the main() method.
public class WriteFileToTable {
final static String driverClass = "oracle.jdbc.driver.OracleDriver";
final static String connectionURL = "jdbc:oracle:thin:@localhost:1521:CUSTDB";
final static String userID = "scott";
final static String userPassword = "tiger";
final static String inputFileName = "Employee.txt";
final static String TABLE_NAME = "EMP";
final static String DELIM = ",";
Connection con = null;
* Construct a WriteFileToTable object. This constructor will create an
* Oracle database connection.
public WriteFileToTable() {
try {
System.out.print(" Loading JDBC Driver -> " + driverClass + "\n");
Class.forName(driverClass).newInstance();
System.out.print(" Connecting to -> " + connectionURL + "\n");
this.con = DriverManager.getConnection(connectionURL, userID, userPassword);
System.out.print(" Connected as -> " + userID + "\n");
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
* Method used to create the initial EMP table. Before attempting to create
* the table, this method will first try to drop the table.
public void createTable() {
Statement stmt = null;
try {
stmt = con.createStatement();
System.out.print(" Dropping Table: " + TABLE_NAME + "\n");
stmt.executeUpdate("DROP TABLE " + TABLE_NAME);
System.out.print(" - Dropped Table...\n");
System.out.print(" Closing Statement...\n");
stmt.close();
} catch (SQLException e) {
System.out.print(" - Table " + TABLE_NAME + " did not exist.\n");
try {
stmt = con.createStatement();
System.out.print(" Creating Table: " + TABLE_NAME + "\n");
stmt.executeUpdate("CREATE TABLE emp (" +
" emp_id NUMBER NOT NULL " +
" , dept_id NUMBER " +
" , name VARCHAR2(30) NOT NULL " +
" , date_of_birth DATE NOT NULL " +
" , date_of_hire DATE NOT NULL " +
" , monthly_salary NUMBER(15,2) NOT NULL " +
" , position VARCHAR2(100) NOT NULL " +
" , extension NUMBER " +
" , office_location VARCHAR2(100))");
System.out.print(" - Created Table...\n");
System.out.print(" Closing Statement...\n");
stmt.close();
} catch (SQLException e) {
e.printStackTrace();
* Method used to read records from Employee.txt file then write the records
* to an Oracle table within the database named "EMP".
public void performLoadWrite() {
Statement stmt = null;
int insertResults = 0;
StringTokenizer st = null;
String emp_id;
String dept_id;
String name;
String date_of_birth;
String date_of_hire;
String monthly_salary;
String position;
String extension;
String office_location;
try {
System.out.print(" Creating Statement...\n");
stmt = con.createStatement ();
System.out.print(" Create FileReader Object for file: " + inputFileName + "...\n");
FileReader inputFileReader = new FileReader(inputFileName);
System.out.print(" Create BufferedReader Object for FileReader Object...\n");
BufferedReader inputStream = new BufferedReader(inputFileReader);
String inLine = null;
while ((inLine = inputStream.readLine()) != null) {
st = new StringTokenizer(inLine, DELIM);
emp_id = st.nextToken();
dept_id = st.nextToken();
name = st.nextToken();
date_of_birth = st.nextToken();
date_of_hire = st.nextToken();
monthly_salary = st.nextToken();
position = st.nextToken();
extension = st.nextToken();
office_location = st.nextToken();
System.out.print(" Inserting value for [" + name + "]\n");
insertResults = stmt.executeUpdate(
"INSERT INTO " + TABLE_NAME + " VALUES (" +
emp_id +
" , " + dept_id +
" , '" + name + "'" +
" , '" + date_of_birth + "'" +
" , '" + date_of_hire + "'" +
" , " + monthly_salary +
" , '" + position + "'" +
" , " + extension +
" , '" + office_location + "')");
System.out.print(" " + insertResults + " row created.\n");
System.out.print(" Commiting Transaction...\n");
con.commit();
System.out.print(" Closing inputString...\n");
inputStream.close();
System.out.print(" Closing Statement...\n");
stmt.close();
} catch (SQLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
* Method used to query records from the database table EMP. This method
* can be used to verify all records have been correctly loaded from the
* example text file "Employee.txt".
public void queryRecords() {
Statement stmt = null;
ResultSet rset = null;
int deleteResults = 0;
int rowNumber = 0;
int emp_id;
int dept_id;
String name;
String date_of_birth;
Date date_of_birth_p;
String date_of_hire;
Date date_of_hire_p;
float monthly_salary;
String position;
int extension;
String office_location;
try {
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
NumberFormat defaultFormat = NumberFormat.getCurrencyInstance();
System.out.print(" Creating Statement...\n");
stmt = con.createStatement ();
System.out.print(" Opening query for table: " + TABLE_NAME + "...\n");
rset = stmt.executeQuery ("SELECT * FROM emp ORDER BY emp_id");
while (rset.next ()) {
rowNumber = rset.getRow();
emp_id = rset.getInt(1);
if ( rset.wasNull() ) {emp_id = -1;}
dept_id = rset.getInt(2);
if ( rset.wasNull() ) {dept_id = -1;}
name = rset.getString(3);
if ( rset.wasNull() ) {name = "<null>";}
date_of_birth = rset.getString(4);
if ( rset.wasNull() ) {date_of_birth = "1900-01-01";}
try {
date_of_birth_p = formatter.parse(date_of_birth);
} catch (ParseException e) {
date_of_birth_p = new Date(0);
date_of_hire = rset.getString(5);
if ( rset.wasNull() ) {date_of_hire = "1900-01-01";}
try {
date_of_hire_p = formatter.parse(date_of_hire);
} catch (ParseException e) {
date_of_hire_p = new Date(0);
monthly_salary = rset.getFloat(6);
if ( rset.wasNull() ) {monthly_salary = 0;}
position = rset.getString(7);
if ( rset.wasNull() ) {position = "<null>";}
extension = rset.getInt(8);
if ( rset.wasNull() ) {extension = -1;}
office_location = rset.getString(9);
if ( rset.wasNull() ) {office_location = "<null>";}
System.out.print(
"\n" +
" RESULTS -> [R" + rowNumber + "] " + "\n" +
" Employee ID : " + emp_id + "\n" +
" Department ID : " + dept_id + "\n" +
" Employee Name : " + name + "\n" +
" D.O.B. : " + date_of_birth_p + "\n" +
" Date of Hire : " + date_of_hire_p + "\n" +
" Monthly Salary : " + defaultFormat.format(monthly_salary) + "\n" +
" Position : " + position + "\n" +
" Extension : x" + extension + "\n" +
" Office Location : " + office_location +
"\n");
System.out.print(" Closing ResultSet...\n");
rset.close();
System.out.print(" Closing Statement...\n");
stmt.close();
} catch (SQLException e) {
e.printStackTrace();
* Close down Oracle connection.
public void closeConnection() {
try {
System.out.print(" Closing Connection...\n");
con.close();
} catch (SQLException e) {
e.printStackTrace();
* Sole entry point to the class and application.
* @param args Array of String arguments.
* @exception java.lang.InterruptedException
* Thrown from the Thread class.
public static void main(String[] args)
throws java.lang.InterruptedException {
WriteFileToTable runExample = new WriteFileToTable();
runExample.createTable();
runExample.performLoadWrite();
runExample.queryRecords();
runExample.closeConnection();
}Hi
Thanks a lot. I ran the program with the MySql driver as follows:
The errors are as follows: I will ttry to place the Driver in the Classpath. As far as I know the driver has been specified correctly this time.
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at us.ilango.WriteAntennas.<init>(WriteAntennas.java:41)
at us.ilango.WriteAntennas.main(WriteAntennas.java:377)
java.lang.NullPointerException
at us.ilango.WriteAntennas.createTable(WriteAntennas.java:70)
at us.ilango.WriteAntennas.main(WriteAntennas.java:378)
Exception in thread "main" Loading JDBC Driver -> com.mysql.jdbc.Driver
The program is as follows:
package us.ilango;
* @author ilango
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.Statement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.StringTokenizer;
import java.io.FileReader;
import java.io.BufferedReader;
import java.io.IOException;
public class WriteAntennas {
final static String driverClass = "com.mysql.jdbc.Driver";
final static String connectionURL = "jdbc:mysql://localhost/test2";
final static String userID = "brian";
final static String userPassword = " ";
final static String inputFileName = "CO.DAT";
final static String TABLE_NAME = "CELL";
final static String DELIM = "|";
Connection con = null;
public WriteAntennas() {
try {
System.out.print(" Loading JDBC Driver -> " + driverClass + "\n");
Class.forName(driverClass).newInstance();
System.out.print(" Connecting to -> " + connectionURL + "\n");
this.con = DriverManager.getConnection(connectionURL, userID, userPassword);
System.out.print(" Connected as -> " + userID + "\n");
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
* Method used to create the initial EMP table. Before attempting to create
* the table, this method will first try to drop the table.
public void createTable() {
Statement stmt=null;
try {
stmt = con.createStatement();
System.out.print(" Dropping Table: " + TABLE_NAME + "\n");
stmt.executeUpdate("DROP TABLE " + TABLE_NAME);
System.out.print(" - Dropped Table...\n");
System.out.print(" Closing Statement...\n");
stmt.close();
} catch (SQLException e) {
System.out.print(" - Table " + TABLE_NAME + " did not exist.\n");
try {
stmt = con.createStatement();
System.out.print(" Creating Table: " + TABLE_NAME + "\n");
stmt.executeUpdate("create table TOWER_PUBACC_CO (" +
"record_type char(2) null" +
", content_indicator char(3) null" +
", file_number char(8) null" +
", registration_number char(7) null" +
", unique_system_identifier long(9,0) not null" +
", coordinate_type char(1) not null" +
",latitude_degrees int null" +
",latitude_minutes int null" +
",latitude_seconds int(4,1) null" +
",latitude_direction char(1) null" +
",latitude_total_seconds int(8,1) null" +
",longitude_degrees int null" +
",longitude_minutes int null" +
",longitude_seconds int(4,1) null" +
",longitude_direction char(1) null" +
",longitude_total_seconds int(8,1) null)" );
System.out.print(" created Table...\n");
System.out.print(" closing Statement...\n");
stmt.close();
} catch (SQLException e) {
e.printStackTrace();
public void performLoadWrite() {
Statement stmt = null;
int insertResults = 0;
StringTokenizer st = null;
String record_type ;
String content_indicator;
String file_number ;
String registration_number;
String unique_system_identifier ;
String coordinate_type;
String latitude_degrees;
String latitude_minutes;
String latitude_seconds;
String latitude_direction;
String latitude_total_seconds;
String longitude_degrees;
String longitude_minutes;
String longitude_seconds;
String longitude_direction;
String longitude_total_seconds;
try {
System.out.print(" Creating Statement...\n");
stmt = con.createStatement ();
System.out.print(" Create FileReader Object for file: " + inputFileName + "...\n");
FileReader inputFileReader = new FileReader(inputFileName);
System.out.print(" Create BufferedReader Object for FileReader Object...\n");
BufferedReader inputStream = new BufferedReader(inputFileReader);
String inLine = null;
while ((inLine = inputStream.readLine()) != null) {
st = new StringTokenizer(inLine, DELIM);
record_type = st.nextToken();
content_indicator = st.nextToken();
file_number = st.nextToken();
registration_number = st.nextToken();
unique_system_identifier = st.nextToken();
coordinate_type =st.nextToken();
latitude_degrees = st.nextToken();
latitude_minutes = st.nextToken();
latitude_seconds=st.nextToken();
latitude_direction = st.nextToken();
latitude_total_seconds =st.nextToken();
longitude_degrees= st.nextToken();
longitude_minutes = st.nextToken();
longitude_seconds = st.nextToken();
longitude_direction=st.nextToken();
longitude_total_seconds =st.nextToken();
System.out.print(" Inserting value for [" + unique_system_identifier + "]\n");
insertResults = stmt.executeUpdate(
"INSERT INTO " + TABLE_NAME + " VALUES (" +
record_type +
" , " + content_indicator +
" , '" + file_number + "'" +
" , '" + registration_number + "'" +
" , '" + unique_system_identifier + "'" +
" , " + coordinate_type + "'" +
" , '" + latitude_degrees + "'" +
" , " + latitude_minutes + "'" +
" , '" + latitude_seconds + "'" +
" , '" + latitude_direction + "'" +
" , '" + latitude_total_seconds + "'" +
" , '" + longitude_minutes + "'" +
" , '" + longitude_seconds + "'" +
" , '" + longitude_direction + "'" +
" , '" + longitude_total_seconds + "')");
System.out.print(" " + insertResults + " row created.\n");
System.out.print(" Commiting Transaction...\n");
con.commit();
System.out.print(" Closing inputString...\n");
inputStream.close();
System.out.print(" Closing Statement...\n");
stmt.close();
} catch (SQLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
public void queryRecords() {
Statement stmt = null;
ResultSet rset = null;
int deleteResults = 0;
int rowNumber = 0;
String record_type;
String content_indicator;
String file_number;
String registration_number ;
long unique_system_identifier;
String coordinate_type ;
int latitude_degrees ;
int latitude_minutes ;
int latitude_seconds;
String latitude_direction;
int latitude_total_seconds;
int longitude_degrees;
int longitude_minutes;
int longitude_seconds;
String longitude_direction;
int longitude_total_seconds;
try {
System.out.print(" Creating Statement...\n");
stmt = con.createStatement ();
System.out.print(" Opening query for table: " + TABLE_NAME + "...\n");
rset = stmt.executeQuery ("SELECT * FROM cell ORDER BY unique_system_identifier");
while (rset.next ()) {
rowNumber = rset.getRow();
unique_system_identifier = rset.getInt (1);
if ( rset.wasNull() ) {unique_system_identifier = -1;}
record_type = rset.getString (2);
if ( rset.wasNull() ) {record_type = "<null>";}
content_indicator = rset.getString(3);
if ( rset.wasNull() ) {content_indicator = "<null>";}
file_number = rset.getString(4);
if ( rset.wasNull() ) {file_number = "<null>";}
registration_number = rset.getString(5);
if ( rset.wasNull() ) {registration_number = "<null>";}
coordinate_type = rset.getString(6);
if ( rset.wasNull() ) {coordinate_type = "<null>";}
latitude_degrees = rset.getInt(7);
if ( rset.wasNull() ) {latitude_degrees = 1;}
latitude_minutes = rset.getInt(8);
if ( rset.wasNull() ) {latitude_minutes = 1;}
latitude_seconds = rset.getInt(9);
if ( rset.wasNull() ) {latitude_seconds = 1;}
latitude_direction = rset.getString(10);
if ( rset.wasNull() ) {latitude_direction = "<null>";}
latitude_total_seconds = rset.getInt(11);
if ( rset.wasNull() ) {latitude_total_seconds = 1;}
longitude_degrees = rset.getInt(12);
if ( rset.wasNull() ) {longitude_degrees = 1;}
longitude_minutes = rset.getInt(13);
if ( rset.wasNull() ) {longitude_minutes = 1;}
longitude_seconds = rset.getInt(14);
if ( rset.wasNull() ) {longitude_seconds = 1;}
longitude_direction = rset.getString(15);
if ( rset.wasNull() ) {longitude_direction = "<null>";}
longitude_total_seconds = rset.getInt(16);
if ( rset.wasNull() ) {longitude_total_seconds = 1;}
System.out.print(
"\n" +
" RESULTS -> [R" + rowNumber + "] " + "\n" +
" Unique_System_Identifier : " + unique_system_identifier + "\n" +
" Record_type : " + record_type + "\n" +
" Content_Indicator : " + content_indicator + "\n" +
" Registration_Number : " + registration_number + "\n" +
" File_Number : " + file_number + "\n" +
" Coordinate_Type : " + coordinate_type + "\n" +
" Latitude_Degrees : " + latitude_degrees + "\n" +
" Latitude_Minutes : " + latitude_minutes + "\n" +
" Latitude_Seconds : " + latitude_seconds + "\n" +
" Latitude_Direction : " + latitude_direction + "\n" +
" Latitude_Total_Seconds : " + latitude_total_seconds + "\n" +
" Longitude_Degrees : " + longitude_degrees + "\n" +
" longitude_minutes : " + longitude_minutes + "\n" +
" Longitude_Seconds : " + longitude_seconds + "\n" +
" longitude_direction : " + longitude_direction + "\n" +
" Longitude_Total_Seconds : " + longitude_total_seconds +
"\n");
System.out.print(" Closing ResultSet...\n");
rset.close();
System.out.print(" Closing Statement...\n");
stmt.close();
} catch (SQLException e) {
e.printStackTrace();
public void closeConnection() {
try {
System.out.print(" Closing Connection...\n");
con.close();
} catch (SQLException e) {
e.printStackTrace();
public static void main(String[] args)
throws java.lang.InterruptedException {
WriteAntennas runJob = new WriteAntennas();
runJob.createTable();
runJob.performLoadWrite();
runJob.queryRecords();
runJob.closeConnection();
} -
Attached is a file of 3 trials of a drop vertical jump activity onto a force plate. the subject stands on a platform off the force plate, jumps onto the force place and immediately jumps up as if going for a rebound. I am able to run this data and obtain a waveform graph with no problems. however, I need to be able to find the initial contact with the force palte, the peak of the drop, the intial time off the force plate (prior to the jump), the return from the jump and finally the second peak (landing from the jump).
I want to calculate the time of flight ( time off the plate and in the air after the intial drop) to calculate juimp height.
I had someone write me a mathscript for it and it works well, however, I need to do it without mathscript as I do not understand mathscript (nor Labview!!).
Please help
Attachments:
Jose_Index and shift register6.vi 130 KB
NI post.docx 365 KBOK, but I'm not understanding what you're asking us to do... Are you asking us to explain what the MathScript code is doing? (It's searching the array for the elements when the values are above or below a threshold.) Are you asking someone to convert the whole MathScript code to LabVIEW (we are not a code-writing service), or you just want to be able to calculate the new stuff you want with LabVIEW?
In the future, please do not post proprietary file formats. Most people do not have Word, or Word 2007 for that matter. Please post text files or PDFs. Thanks.
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