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ÔÀ´ÔÚ6.0ÏÂÃæ¿ÉÒÔÔËÐеĺ¯Êý£¬×°ÁË7.0aÒÔºóÔËÐв»ÁË£¬Çë°ïæ·ÖÎöһϣ¬Ð»Ð» Ìáʾ³ö´íÈçÏ£º ??? Error using ==> fopen Invalid filename. Error in ==> pretreatment at 6 fid=fopen([pname fname],'r'); ÎÒÔËÐеĺ¯ÊýÈçÏ£º clc,clear format short e % Open a File and Import Original Data. [fname,pname]=uigetfile('*.txt','Open a file:'); fid=fopen([pname fname],'r'); fgetl(fid);% Here 'fgetl' command is used to jump to read next line. fgetl(fid); fgetl(fid); a=fscanf(fid,'%f',[7 inf]); fclose(fid); a1=a'; Dtime=a1(:,1);Ddtg=a1(:,2);Dtg=a1(:,3);Ddhf=a1(:,4);Dhf=a1(:,5);Ddt=a1(:,6);Dt=a1(:,7); %hl1=line(Dt,Dtg,'color','k'); %ax1=gca; %set(ax1,'Xcolor','k','ycolor','k') %ax2=axes('position',get(ax1,'Position'), ... % 'XAxisLocation','top',... % 'YAxisLocation','right',... % 'Color','none',... % 'XColor','b','YColor','b'); %hl2=line(Dt,Ddtg,'Color','b','Parent',ax2); %grid on; [haxes,hline1,hline2]=plotyy(Dt,Dtg,Dt,Ddtg);grid on; xlabel('Temperature ( ^oC )') axes(haxes(1)) ylabel('Thermogravimetry (%)') axes(haxes(2)) ylabel('DTG (d%)') % Select the Temperature Range for Calculation prompt={'Enter the Initial Temperature /C:','Enter the Final Temperature /C:'}; def={'20','200'}; num_line=1; answer=inputdlg(prompt,'Please Input the Temperature Range for Calculate!',num_line,def); T(1)=str2num([answer{1}]); T(2)=str2num([answer{2}]); r=1; while Dt(r) end rs=r; while Dt(r) end re=r-1; Dalfa=(Dtg(rs:re)-Dtg(rs))/-13.73;%%%%%%%%% Dt=Dt(rs:re)+273.15; Dtime=Dtime(rs:re); Ddt=Ddt(rs:re); Ddalfa=Ddtg(rs:re)/-13.73; % Program for interpolation and calculate Ddtg & Ddt rn=1; for i=0.10:0.02:0.75 %%%%%% Dalfa1(rn,1)=i; r=1; ri=0; rf=0; n=size(Dalfa,1); while Dalfa(r) r=r+1; end rt=r; if rt<12 ri=1; rf=rt+11; elseif rt>n-11 ri=rt-12; rf=n; else ri=rt-12; rf=rt+11; end % calculate for interpolation of temperature %p=polyfit(Dt(ri:rf),Dalfa(ri:rf),2) p=[Dt(ri:rf).^2 Dt(ri:rf) ones(rf-ri+1,1)]\Dalfa(ri:rf); %p1=polyval(p,Dt(ri:rf)); p(3)=p(3)-Dalfa1(rn,1); DtI=roots(p); if abs(DtI(1)-Dt(rt))<=abs(DtI(2)-Dt(rt))%DtI(1)>=Dt(rt-2) & DtI(1)<=Dt(rt+1) Dt_new(rn,1)=DtI(1); else Dt_new(rn,1)=DtI(2); end % Calculate the differential temperature pat=[Dtime(ri:rf).^2 Dtime(ri:rf) ones(rf-ri+1,1)]\Dalfa(ri:rf); pat(3)=pat(3)-Dalfa1(rn,1); DtimeI=roots(pat); if abs(DtimeI(1)-Dtime(rt))<=abs(DtimeI(2)-Dtime(rt)) Dtime_new(rn,1)=DtimeI(1); else Dtime_new(rn,1)=DtimeI(2); end Ddtg_new(rn,1)=(2*pat(1)*Dtime_new(rn,1)+pat(2))*60; % calculate for interpolation of time pt=[Dtime(ri:rf).^2 Dtime(ri:rf) ones(rf-ri+1,1)]\Ddt(ri:rf); % Calculate the differential temperature Ddt_new(rn,1)=polyval(pt,Dtime_new(rn,1)); %Ddt_new(rn,1)=(2*pt(1)*Dtime_new(rn,1)+pt(2))*60; rn=rn+1; rt=0; end % Export the Result c=[Dalfa1 Dt_new Ddtg_new Ddt_new]; [filename,pathname]=uiputfile('*.txt','Save the Result File Name'); fid=fopen([pathname filename],'wt'); fprintf(fid,'Temperature Range: %6.2f - %6.2f C\n',T); fprintf(fid,' alfa T(K) dalfa/dt(min-1) Rate\n'); fprintf(fid,'%5.4f %8.4f %8.6f %8.4f\n',c'); fclose(fid); clf figure(1) plot(Dt,Dalfa,Dt_new,Dalfa1,'o',Dt,Ddalfa,Dt_new,Ddtg_new,'^') |
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