www.pudn.com > logtools.rar > lashtrunc.m, change:2004-08-13,size:2627b

function lash=lashtrunc(lash)  % lashout=lashtrunc(lash) % % LASHTRUNC resizes an LAS header so that contains no blank columns. The % output header will have a number of columns such that at least one non-blank % ascii character appears inthe last column. It also detects and removes % any non-ascii characters in the header, replacing them with blanks % lash ... string matrix containing the input LAS header % lashout ... string matrix containing the output LAS header % % % G.F. Margrave, Department of Geology and Geophysics, %	University of Calgary, 1996 % NOTE: It is illegal for you to use this software for a purpose other % than non-profit education or research UNLESS you are employed by a CREWES % Project sponsor. By using this software, you are agreeing to the terms % detailed in this software's Matlab source file.   % BEGIN TERMS OF USE LICENSE % % This SOFTWARE is maintained by the CREWES Project at the Department % of Geology and Geophysics of the University of Calgary, Calgary, % Alberta, Canada.  The copyright and ownership is jointly held by  % its author (identified above) and the CREWES Project.  The CREWES  % project may be contacted via email at:  crewesinfo@crewes.org %  % The term 'SOFTWARE' refers to the Matlab source code, translations to % any other computer language, or object code % % Terms of use of this SOFTWARE % % 1) Use of this SOFTWARE by any for-profit commercial organization is %    expressly forbidden unless said organization is a CREWES Project %    Sponsor. % % 2) A CREWES Project sponsor may use this SOFTWARE under the terms of the  %    CREWES Project Sponsorship agreement. % % 3) A student or employee of a non-profit educational institution may  %    use this SOFTWARE subject to the following terms and conditions: %    - this SOFTWARE is for teaching or research purposes only. %    - this SOFTWARE may be distributed to other students or researchers  %      provided that these license terms are included. %    - reselling the SOFTWARE, or including it or any portion of it, in any %      software that will be resold is expressly forbidden. %    - transfering the SOFTWARE in any form to a commercial firm or any  %      other for-profit organization is expressly forbidden. % % END TERMS OF USE LICENSE   %search for non ascii  ind=find(abs(lash)<32) if(~isempty(ind)) 	lash(ind)=setstr(32*ones(size(ind))); end ind=find(abs(lash)>217) if(~isempty(ind)) 	lash(ind)=setstr(32*ones(size(ind))); end  %search for blank columns [nlines,m]=size(lash);  test=sum(abs(lash))/nlines; ind=find(test~=32); maxcol=max(ind); if(maxcol<m) 	lash=lash(:,1:maxcol); end