JCFile3dDataSource (JClass DesktopViews 6.3.0 API Documentation)

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com.klg.jclass.chart3d.data
Class JCFile3dDataSource

java.lang.Object
  |
  +--com.klg.jclass.chart3d.data.JCFile3dDataSource

public class JCFile3dDataSource
extends Object

This is a convenience class which parses data from a file. Do not create an instance of this class. Instead, use the static method: JCFile3dDataSource.createDataSourceFromFile(String fileName). The file can either contain an irregular or regular grid or point data. A regular grid file has the following format:
# Comments use the # sign
# For this example the grid has 5 by 3 points
# The Grid increase in
# X steps of 1.0 and Y steps of 2.0
# The Origin of the Grid is as x = -20.0 and y = 50.0
GRID
5 'A A' 'B' 'C' 'D' 'E'

3 'Y1' 'Y2' Y3'

100.0 1.0 2.0 -20.0 50.0

# 15 data points would follow, 1 for each point
49.875000 43.765625 38.50000 33.984375 30.12400
26.828125 24.0000 21.656875 19.375000 17.39062 16.222 18.444 23.555
58.664 37.894564

An Irregular Grid would supply all the x and y values as well as the datapoints.
An example irregular grid file:
# Irregular grid has 5 by 3 points
# Holes have value 100.00
# 5 x values are give
# 3 y values are given
IGRID
5 'A A' 'B' 'C' 'D' 'EE'

3 'Y1' 'Yahoo' 'Y3'

100.0

20 21.1 22.3 23 24.4
50.3 51.3 52.6

# 15 Data values follow
23.34343 12.89239 11.99423 15.781212 18.18989
26.828125 24.0000 21.656875 19.375000 17.39062 16.222 18.444 23.555
58.664 37.894564

Point data would look like this:

POINT 3 'Series 1' 'Series 2' 'Series 3'
-1000

5
5.65 6.24 1.78
7.41 7.26 4.21
5.45 5.44 1.43
0.97 9.66 3.41
3.86 1.42 0.20

4
6.57 7.43 8.37
3.79 3.63 2.65
7.89 3.48 5.65
0.78 7.03 0.65

6
9.91 7.54 1.74
6.53 4.62 1.99
8.41 3.49 5.06
7.85 9.16 0.64
6.96 9.18 8.95
3.47 3.19 6.29

Field Summary

protected static StreamTokenizer streamTokenizer
          StreamTokenizer instance used to parse the data file.

Constructor Summary

JCFile3dDataSource()


Method Summary

static com.klg.jclass.chart3d.data.Base3dDataSource createDataSourceFromFile(String fileName)
          Do not use a constructor on this class.

protected static com.klg.jclass.chart3d.data.Base3dDataSource parseFile()
          Method does the initial parsing to see if this is a regular or irregular grid datafile, or a point datafile.

protected static com.klg.jclass.chart3d.data.JCEditable3dGridDataSource parseGrid()
          Parses the file if it is a regular grid file.

protected static com.klg.jclass.chart3d.data.JCEditable3dGridDataSource parseIGrid()
          Parses an irregular grid file.

protected static com.klg.jclass.chart3d.data.JCEditable3dPointDataSource parsePoint()
          Parses a data file of type POINT, and returns a suitable datasource.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

streamTokenizer

protected static StreamTokenizer streamTokenizer

StreamTokenizer instance used to parse the data file.

Constructor Detail