UrlDataSource STATBEAN®
Purpose: Reads data from a file located at a specified URL and saves the results in an invisible rectangular data table.
Read/Write Properties
| Name |
Type |
Description |
Possible Values |
Default Value |
| columnsNamesInFirstRow |
boolean |
Whether the first row of the file contains names for the data columns. |
true,false |
true |
| delimiter |
String |
The delimiter character. |
"tab","space","comma","semicolon", or any single delimiter character |
"tab" |
| missingValueCode |
double |
A numeric value used to represent missind values in the file to be read. |
Any numeric value. |
-32768.0 |
| urlString |
String |
The URL of the file to be read. |
Any string. |
"" |
Other Public Methods
| Name |
Description |
Arguments |
Return Value |
| int getMaxRows() |
Gets the number of rows which were read. |
None. |
Number of rows. |
| int getMaxColumns() |
Gets the number of columns which were read. |
None. |
Number of columns. |
| boolean readData() |
Causes the data to be read and all listeners notified. |
None. |
true if data is read successfully |
Other properties are inherited from the java.awt.Object class and from the general StatDataSource class.
Code Sample
//create the UrlDataSource bean
UrlDataSource urlDataSource1 = new UrlDataSource();
//create a bean to display the data
DataDisplayTable dataDisplayTable1 = new DataDisplayTable();
//set the url filename to be read
urlDataSource1.setUrlString("http://www.statlets.com/data/commute.txt");
//set the delimiter character used in the file
urlDataSource1.setDelimiter("space");
//make the data table a listener for changes in the urlDataSource bean
urlDataSource1.addDataChangeListener(dataDisplayTable1.listenerForDataChange);
//instruct the urlDataSource bean to read the file
urlDataSource1.readData();
