Respected Tom Rink Sir and Tomas Pluskal Sir.
I have tried to access the latest visad source code from the SVN.
And added support into byRef renderer to take care
Range->ZAxis and Range->RGB Mapping.
Pluskal Sir, kindly preseve the current jar file and
update your jar with the attached class file, it should work for you.
Use jar command with -uvf option.
Attached herewith the modified program VisadTestDump.java.
I am putting the class file on ftp.ssec.wisc.edu/pub/incoming.
I am not able to send it through my office mail.
Kindly see my comments in the program.
Sort of a disclaimer notice, but still to say.
This is just a TEMPORARY (NOT PROPERLY TESTED) SOLUTION but still QUITE
EFFICIENT ;-).
Just give it a try.
I hope it helps you a bit.
with regards
Ghansham
On 05/25/2012 11:30 PM, visad-request@xxxxxxxxxxxxxxxx wrote:
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Today's Topics:
1. Re: Strange rendering depending on axis range (Tom Rink)
2. Re: Strange rendering depending on axis range (Tomas Pluskal)
----------------------------------------------------------------------
Message: 1
Date: Fri, 25 May 2012 00:16:39 -0500
From: Tom Rink<rink@xxxxxxxxxxxxx>
To: visad@xxxxxxxxxxxxxxxx
Subject: Re: [visad] Strange rendering depending on axis range
Message-ID:<4FBF15B7.70709@xxxxxxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
On 5/25/12 12:00 AM, Tomas Pluskal wrote:
Hi Tom,
I was experimenting with your VisadTest.java source, and discovered this:
double xMin = 1.0;
double xMax = 1.0007;
double yMin = 0.0;
double yMax = 100.0;
int xRes = 1000;
int yRes = 10;
formally setting the ranges to decimal values fixes the problem for me.
We are visualizing mass spectrometry data, and if the user wants to
plot a single mass signal, we need to visualize a narrow range of m/z
values, such as 179.0551 ~ 179.0558.
1.0 to 1.00007 did not work, I think this can be expected.
Hmm, why this can be expected?
0.00007/1000 is possibly too small for float precision.
Tomas
===============================================
Tom?s( Pluskal
G0 Cell Unit, Okinawa Institute of Science and Technology Graduate
University
1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
TEL: +81-98-966-8684
Fax: +81-98-966-2890
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Message: 2
Date: Fri, 25 May 2012 05:41:16 +0000
From: Tomas Pluskal<pluskal@xxxxxxx>
To: "visad@xxxxxxxxxxxxxxxx"<visad@xxxxxxxxxxxxxxxx>
Subject: Re: [visad] Strange rendering depending on axis range
Message-ID:<DD0D6ACD-8B55-4FA4-BAC0-EB8B2B5D7640@xxxxxxx>
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0.00007/1000 is possibly too small for float precision.
I see.
But 7000 / 10000 is not that small... (xMin = 10000000, xMax = 10007000, xRes =
10000 shows the same issue).
Tomas
===============================================
Tom?? Pluskal
G0 Cell Unit, Okinawa Institute of Science and Technology Graduate University
1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
TEL: +81-98-966-8684
Fax: +81-98-966-2890
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End of visad Digest, Vol 30, Issue 11
*************************************
import java.awt.Color;
import java.awt.Component;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import javax.swing.JFrame;
import visad.DataReferenceImpl;
import visad.Display;
import visad.FlatField;
import visad.FunctionType;
import visad.GraphicsModeControl;
import visad.Linear2DSet;
import visad.RealTupleType;
import visad.RealType;
import visad.ScalarMap;
import visad.ConstantMap;
import visad.java3d.DisplayImplJ3D;
import visad.java3d.DisplayRendererJ3D;
import visad.bom.ImageRendererJ3D;
public class VisadTestDump {
public static void main(String[] args) {
try {
double xMin = 100;
double xMax = 1000;
double yMin = 0;
double yMax = 30;
int xRes = 1000;
int yRes = 1000;
//Use this property to set Texture ByReference
Rendering for images
System.setProperty(visad.ShadowType.PROP_IMAGE_BY_REF,
"true");
//Optional:Just try to uncomment this. If your graphics
card supports NPOT
//textures. You may save up a lot of memory.
//System.setProperty(visad.java3d.DisplayImplJ3D.PROP_TEXTURE_NPOT, "true");
float[][] zValues = new float[1][xRes * yRes];
File f = new File("datasetdump");
FileInputStream fs = new FileInputStream(f);
DataInputStream ds = new DataInputStream(fs);
for (int i = 0; i < zValues[0].length; i++) {
zValues[0][i] = (float)ds.readDouble();
}
ds.close();
RealType xType = RealType.getRealType("x");
RealType yType = RealType.getRealType("y");
RealType zType = RealType.getRealType("z");
RealTupleType domainTuple = new RealTupleType(xType,
yType);
FunctionType func = new FunctionType(domainTuple,
zType);
ScalarMap xMap = new ScalarMap(xType, Display.XAxis);
ScalarMap yMap = new ScalarMap(yType, Display.YAxis);
ScalarMap zMap = new ScalarMap(zType, Display.ZAxis);
ScalarMap colorMap = new ScalarMap(zType, Display.RGB);
DisplayImplJ3D display = new DisplayImplJ3D("display");
display.addMap(xMap);
display.addMap(yMap);
display.addMap(zMap);
display.addMap(colorMap);
xMap.setRange(xMin, xMax);
Linear2DSet domainSet = new Linear2DSet(domainTuple,
xMin, xMax,
xRes, yMin, yMax, yRes);
FlatField flatField = new FlatField(func, domainSet);
flatField.setSamples(zValues, false);
DataReferenceImpl dataReference = new
DataReferenceImpl("data");
dataReference.setData(flatField);
//Adding constant Map:Dont use value less than 1
ConstantMap cmap[] = {new ConstantMap(1.0f,
Display.CurvedSize)};
//Use ImageRendererJ3D than using Default Renderer
display.addReferences(new ImageRendererJ3D(),
dataReference, cmap);
//display.addReference(dataReference);
DisplayRendererJ3D dRenderer = (DisplayRendererJ3D)
display
.getDisplayRenderer();
dRenderer.setForegroundColor(Color.black);
dRenderer.setBackgroundColor(Color.white);
dRenderer.setBoxOn(true);
GraphicsModeControl graphicsModeControl = display
.getGraphicsModeControl();
graphicsModeControl.setScaleEnable(true);
//graphicsModeControl.setTextureEnable(false);
JFrame newFrame = new JFrame();
Component component = display.getComponent();
newFrame.getContentPane().add(component);
newFrame.pack();
newFrame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
}
