IAC LeadTunstateCherenkovCrystalTests 2-15 - Revision history

Foretony at 16:29, 20 February 2015

2015-02-20T16:29:24Z

2015-02-18T18:39:52Z

2/17/15

2015-02-18T02:08:09Z

2/17/15

2015-02-18T02:05:43Z

2/17/15

2015-02-18T02:05:13Z

2/17/15

2015-02-18T02:03:09Z

Created page with " =2/17/15= Beam profile measurements using glass plates separated by 40.4 cm File:RearBP_021715-9.52.png IAC_Experiments"

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=2/17/15=

Beam profile measurements using glass plates separated by 40.4 cm

[[File:RearBP_021715-9.52.png]]

[[IAC_Experiments]]

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 =2/17/15=
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 [[File:CalNearBP_021715-9.52.png| 200 px]][[File:CalRearBP_021715-9.52.png| 200 px]]
 The Image2Hist.C program from the ROOT tutorials

← Older revision		Revision as of 18:39, 18 February 2015
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	[[File:NearBP_021715-9.52.png\| 200 px]][[File:RearBP_021715-9.52.png\| 200 px]]		[[File:NearBP_021715-9.52.png\| 200 px]][[File:RearBP_021715-9.52.png\| 200 px]]
		+
		+	;After calibrating .
		+
		+	[[File:CalNearBP_021715-9.52.png\| 200 px]][[File:CalRearBP_021715-9.52.png\| 200 px]]

	The Image2Hist.C program from the ROOT tutorials		The Image2Hist.C program from the ROOT tutorials

← Older revision		Revision as of 02:08, 18 February 2015
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	[[File:NearBP_021715-9.52.png\| 200 px]][[File:RearBP_021715-9.52.png\| 200 px]]		[[File:NearBP_021715-9.52.png\| 200 px]][[File:RearBP_021715-9.52.png\| 200 px]]
		+
		+	The Image2Hist.C program from the ROOT tutorials
		+
		+	<pre>
		+	//Create a 2-D histogram from an image.
		+	//Author: Olivier Couet
		+
		+	void image2hist()
		+	{
		+	// TASImage image("rose512.jpg");
		+	TASImage image("test.png");
		+	UInt_t yPixels = image.GetHeight();
		+	UInt_t xPixels = image.GetWidth();
		+	UInt_t *argb = image.GetArgbArray();
		+
		+	TH2D* BeamShape = new TH2D("BeamShape","BeamShape",xPixels,-1,1,yPixels,-1,1);
		+
		+	for (int row=0; row<xPixels; ++row) {
		+	for (int col=0; col<yPixels; ++col) {
		+	int index = col*xPixels+row;
		+	float grey = float(argb[index]&0xff)/256;
		+	BeamShape->SetBinContent(row+1,yPixels-col,grey);
		+	}
		+	}
		+
		+	gStyle->SetPalette(53);
		+	BeamShape->Draw("colz");
		+	}
		+
		+	</pre>


	[[IAC_Experiments]]		[[IAC_Experiments]]

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 Beam profile measurements using glass plates separated by 40.4 cm
-[[File:NearBP_021715-9.52.png]][[File:RearBP_021715-9.52.png]]
+[[File:NearBP_021715-9.52.png| 200 px]][[File:RearBP_021715-9.52.png| 200 px]]
 [[IAC_Experiments]]