Read data from txt file

[wiatrak11]

Hi Qt Users,


I have a small question about reading data from txt file and put it into spinbox, editline

I have txt file like this :

(Transform "EulerTransform")
(NumberOfParameters 6)
(TransformParameters 0.010616 0.024962 -0.006457 -9.413307 10.784872 12.639569)
(InitialTransformParametersFileName "NoInitialTransform")
(HowToCombineTransforms "Compose")

// Image specific
(FixedImageDimension 3)
(MovingImageDimension 3)
(FixedInternalImagePixelType "float")
(MovingInternalImagePixelType "float")
(Size 84 99 98)

(Index 0 0 0)
(Spacing 2.0000000000 2.0000000000 2.0000000000)
(Origin -80.0000000000 -33.0000000000 -112.0000000000)
(Direction 1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000)
(UseDirectionCosines "false")

// EulerTransform specific
(CenterOfRotationPoint 3.0000000000 65.0000000000 -15.0000000000)
(ComputeZYX "false")


Here : I have already tried to write a method, but I have a problem with parsing data form line () :

//------------------------------------------------------------------------------
void vTool::LoadFile()
{
	//Open File to read the transformation parameters 
	QString fileName = QFileDialog::getOpenFileName(
		this, 
		"Choose elastix transfrom parameters file",
		vtksys::SystemTools::GetFilenamePath(mCurrentSlicerManager->GetFileName()).c_str(),
		"TransformParameters.0.txt");
 
	if(fileName != "") {
		QFile file(fileName);
		if(!file.open(QIODevice::ReadOnly)) {
			QMessageBox::critical(this, tr("Error"), tr("Could not open file"));
			return;
		}
 
		// Center of point
		QString Xcen, Ycen, Zcen;
 
 
		QString Xt_txt, Yt_txt, Zt_txt, Xr_txt, Yr_txt, Zr_txt;
 
		double Xtrans = 0, Ytrans = 0, Ztrans = 0;
		double Xrot = 0, Yrot = 0, Zrot = 0;
 
		QTextStream in(&file);
 
		while(!in.atEnd())
		{
			QString mText = in.readLine();
			if(mText.startsWith("(TransformParameters"))
			{
				// in <<'/0'<< Xr_txt <<'/0' << Yr_txt<< '/0' << Zr_txt << '/0'<< Xt_txt << '/0' << Yt_txt <<'/0'<< Zt_txt;
				mText.split(" "); 
 
				Xrot = Xr_txt.toDouble();
				Yrot = Yr_txt.toDouble();
				Zrot = Zr_txt.toDouble();
 
				xrot_sb->setValue(Xrot);
				yrot_sb->setValue(Yrot);
				zrot_sb->setValue(Zrot);
 
				Xtrans = Xt_txt.toDouble();
				Ytrans = Yt_txt.toDouble();
				Ztrans = Zt_txt.toDouble();
 
				xtrans_sb->setValue(Xtrans);
				ytrans_sb->setValue(Ytrans);
				ztrans_sb->setValue(Ztrans);
 
			}
 
			if(mText.startsWith("(CenterOfRotationPoint"))
			{
 
				in << Xcen << Ycen << Zcen;
				Xval->setText(Xcen);
				Yval->setText(Ycen);
				Zval->setText(Zcen);
			}
 
 
 
		}
 
	}
 
}

//------------------------------------------------------------------------------
void vTool::LoadFile()
{
	//Open File to read the transformation parameters 
	QString fileName = QFileDialog::getOpenFileName(
		this, 
		"Choose elastix transfrom parameters file",
		vtksys::SystemTools::GetFilenamePath(mCurrentSlicerManager->GetFileName()).c_str(),
		"TransformParameters.0.txt");

	if(fileName != "") {
		QFile file(fileName);
		if(!file.open(QIODevice::ReadOnly)) {
			QMessageBox::critical(this, tr("Error"), tr("Could not open file"));
			return;
		}

		// Center of point
		QString Xcen, Ycen, Zcen;

		
		QString Xt_txt, Yt_txt, Zt_txt, Xr_txt, Yr_txt, Zr_txt;
		
		double Xtrans = 0, Ytrans = 0, Ztrans = 0;
		double Xrot = 0, Yrot = 0, Zrot = 0;

		QTextStream in(&file);
		
		while(!in.atEnd())
		{
			QString mText = in.readLine();
			if(mText.startsWith("(TransformParameters"))
			{
				// in <<'/0'<< Xr_txt <<'/0' << Yr_txt<< '/0' << Zr_txt << '/0'<< Xt_txt << '/0' << Yt_txt <<'/0'<< Zt_txt;
				mText.split(" "); 

				Xrot = Xr_txt.toDouble();
				Yrot = Yr_txt.toDouble();
				Zrot = Zr_txt.toDouble();

				xrot_sb->setValue(Xrot);
				yrot_sb->setValue(Yrot);
				zrot_sb->setValue(Zrot);

				Xtrans = Xt_txt.toDouble();
				Ytrans = Yt_txt.toDouble();
				Ztrans = Zt_txt.toDouble();

				xtrans_sb->setValue(Xtrans);
				ytrans_sb->setValue(Ytrans);
				ztrans_sb->setValue(Ztrans);

			}

			if(mText.startsWith("(CenterOfRotationPoint"))
			{
				
				in << Xcen << Ycen << Zcen;
				Xval->setText(Xcen);
				Yval->setText(Ycen);
				Zval->setText(Zcen);
			}



		}

	}

}

To copy to clipboard, switch view to plain text mode 

Could You help me please ?

I would appreciate for any help please

[wysota]

What exactly is the problem?

[wiatrak11]

I want to read transformParameters values from txt file :

(TransformParameters 0.010616 0.024962 -0.006457 -9.413307 10.784872 12.639569)

(CenterOfRotationPoint 3.0000000000 65.0000000000 -15.0000000000)

and put into variables : Xr_txt,Yr_txt, Zr_txt ...

[wysota]

Yes, I understand that. But what doesn't work? I don't see any code of yours that tries to read any data from the line.

By the way, don't you think the file format is simple enough to write a proper parser for it? You can even use tools such as qlalr to help you.

[wiatrak11]

Yes, I understand that. But what doesn't work? I don't see any code of yours that tries to read any data from the line.

By the way, don't you think the file format is simple enough to write a proper parser for it? You can even use tools such as qlalr to help you.

Ok, thank I have already resolved this problem

Thanks very much for help.