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Multiple Headers in Complex Data File

• To: mathgroup at smc.vnet.net
• Subject: [mg23375] Multiple Headers in Complex Data File
• From: "Krautschik, Chris G" <krautschikc at intel.co.jp>
• Date: Fri, 5 May 2000 02:07:08 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

> Hi All,
> 
> I need to read in a data file with multiple headers into a Data Matrix.
> All header lines begin with the character "#" while the number of columns
> can vary between headers. Also some numbers in the data column may be
> listed as "NaN" and some data columns may contain text that can be
> discarded (as long as the entire column is all text.
> 
> I would like all the numeric data (including NaN values) to be listed in
> columar format ( that is add data columns to the left of the DATA MATRIX
> as the data is read in).
> 
> Any good leads on how to best implement such a scheme in Mathematica would
> be greatly appreciated.
> 
> thanks
> Chris
> 
> Example data file below:
> -----------------------------
> 
> # 2D/3D CD	Measurement
> 
> #
> 
> # Format:
> 
> #Defocus	CD	Slp.Asym	CD-Type	Meas.Thr
> Meas.TypeCD-Left	CD-Right	CD-Center
> 
> 0		0.14764	0	line-cd	NaN	image-thr	0.06591
> 0.21355	0.13973				
> 0		0.1519	4.7038	line-cd	0.18	image-thr	0.07006
> 0.22196	0.14601				
> 0		0.1526	0.41098	line-cd	NaN	image-thr	0.07087
> 0.22347	0.14717				
> 
> # 2D/3D CD	Measur
> 
> #
> 
> # Format:
> 
> # Defocus	CD	Slp.Asym	CD-Type	Meas.Thr	Meas.Type
> CD-Left	CD-Right	CD-Center	Meas.Type	CD-Left
> CD-Right	CD-Center
> 0	0.14925	4.8082	line-cd	0.18	image-thr	0.07045	0.2197
> 0.14508	image-thr	0.07045	0.2197	0.14508
> 0	0.15055	1.74986	line-cd	0.18	image-thr	0.07068	0.22123
> 0.14595	image-thr	0.07068	0.22123	0.14595
> 0	0.14581	2.57533	line-cd	0.18	image-thr	0.06946	0.21527
> 0.14237	image-thr	0.06946	0.21527	0.14237
> 0	0.14657	NaN	line-cd	0.18	image-thr	0.06997	0.21654
> 0.14325	image-thr	0.06997	0.21654	0.14325
> 0	0.14734	4.97056	line-cd	0.18	image-thr	0.07047	0.21782
> 0.14414	image-thr	0.07047	0.21782	0.14414
> 0	0.14871	5.44819	line-cd	0.18	image-thr	0.07055	0.21926
> 0.1449	image-thr	0.07055	0.21926	0.1449
> 0	0.14998	1.44578	line-cd	0.18	image-thr	0.07084	0.22083
> 0.14584	image-thr	0.07084	0.22083	0.14584
> 0	0.15127	-0.3897	5 line-cd	0.18	image-thr	0.07131
> 0.22257	0.14694	image-thr	0.07131	0.22257	0.14694
> 
> # 2D/3D CD	Measur
> 
> #
> 
> # Format:
> 
> # Defocus	CD	Slp.Asym	CD-Type	Meas.Thr	Meas.Type
> CD-Left	CD-Right	CD-Center	CD-Left			
> 0	0.14764	0	line-cd	0.18	image-thr	0.06591	0.21355
> 0.13973	0.06591			
> 0	0.1519	4.7038	line-cd	0.18	image-thr	0.07006	0.22196
> 0.14601	0.07006			
> 0	0.1526	0.41098	line-cd	0.18	image-thr	0.07087	0.22347
> 0.14717	0.07087			
> 0	0.1482	4.78709	line-cd	0.18	image-thr	0.07079	0.21899
> 0.14489	0.07079