Try HDFView to see if you can see your 3D data page by page.
The class ncsa.hdf.view.DefaultTableView.java use very similar code to
yours to show 3D data page by page. I copied the part of the code below.
=====
private void gotoPage(long idx)
{
if (dataset.getRank() < 3) {
return;
}
if (isValueChanged) {
updateValueInFile();
}
long[] start = dataset.getStartDims();
int[] selectedIndex = dataset.getSelectedIndex();
long[] dims = dataset.getDims();
if ((idx <0) || (idx >= dims[selectedIndex[2]])) {
toolkit.beep();
JOptionPane.showMessageDialog(this,
"Frame number must be between 0 and
"+(dims[selectedIndex[2]]-1),
getTitle(),
JOptionPane.ERROR_MESSAGE);
return;
}
start[selectedIndex[2]] = idx;
curFrame = idx;
dataset.clearData();
setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
try {
dataValue = dataset.getData();
if (dataset instanceof ScalarDS)
{
((ScalarDS)dataset).convertFromUnsignedC();
dataValue = dataset.getData();
}
}
catch (Exception ex)
{
setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
dataValue = null;
JOptionPane.showMessageDialog(this, ex, getTitle(),
JOptionPane.ERROR_MESSAGE);
return;
}
setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
frameField.setText(String.valueOf(curFrame));
updateUI();
}
======
Shane, Hugh A. wrote:
I tried this and get the same results. Any other ideas?
-----Original Message-----
From: [email protected] [mailto:hdf-forum-
[email protected]] On Behalf Of Peter Cao
Sent: Friday, December 04, 2009 3:16 PM
To: [email protected]
Subject: Re: [Hdf-forum] Java HDF : unable to select frame in 3D array
Try this.
public int[] getFrame(Dataset dataset, int frameNum) {
dataset.init();
// Select the desired frame
long[] startDims = dataset.getStartDims();
int[] idx = getSelectedIndex(); // idx[0]=hight, idx[1]=width,
idx[2]=depth
// if you want to look through the first dimension, uncomment out the
follwing line
//idx[0]=1; idx[1]=2; idx[2] = 0
startDims[idx[2]] = frameNum;
// Grab the frame data
int[] rawdata = (*int*[])dataset.getData();
return rawdata;
}
Shane, Hugh A. wrote:
An HDF newbie here...
I'm attempting to use the HDF Object Package 1.6.0_12 to read a
previously created HDF5 formatted file that contains, among other
things, a Dataset containing a 3-dimensional array of integers, row x
column x frame. I want to operate on the data one frame at a time but
am unable to select the frame that I want. The Dataset object seems to
always default to frame 0 and won't budge from there. In the code
fragment below, the returned frame is the same regardless of the value
of frameNum. What am I doing wrong?
public int[] getFrame(Dataset dataset, int frameNum) {
dataset.init();
// Select the desired frame
long[] startDims = dataset.getStartDims();
startDims[0] = frameNum;
// Grab the frame data
int[] rawdata = (*int*[])dataset.getData();
return rawdata;
}
----------------------------------------------------------------------
--
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_______________________________________________
Hdf-forum is for HDF software users discussion.
[email protected]
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
_______________________________________________
Hdf-forum is for HDF software users discussion.
[email protected]
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
_______________________________________________
Hdf-forum is for HDF software users discussion.
[email protected]
http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
