how to get some values from many text files and put the into the calculation

Question

Yusuf 2013-9-15

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/87286-how-to-get-some-values-from-many-text-files-and-put-the-into-the-calculation

hello, I have many text files like i shared below and their names are data_01, data_02 and data_03...i found the way of the finding avarage value of Area, xbar,ybar,IXXw and IYYw which is in the below but i just cannot use those values in order to put calculation.for example i want to define 'n' is a xbar(avarage) / 2 but when i try to do that i got the result like a matrix but i dont want it. i just want one value which is the avarage of xbar.how can i do that?

%variables to average over
AveVariables = {'Area', 'xbar', 'ybar', 'IXXw', 'IYYw'};  
AveVariables = lower(AveVariables);  %remove case
Files = dir('data*.txt');  %get all dataXX files                                      
nFiles = length(Files);
AllData = NaN( nFiles, length(AveVariables));  %variables for each file
for k = 1:nFiles;
File = Files(k).name;
str = fileread(File);  %read file into string
pat = '\(*(?<var>[A-Z]+)\)*\s+\=\s+(?<val>[0-9\.\-]+)';  %define pattern
%search pattern is:
%[series of letters, possibly surrounded by parens] = [signed decimal number]
variables = regexpi(str, pat, 'names');    %match pattern
values = {variables.val};
vars = lower({variables.var});
[tf,loc]=ismember( AveVariables, vars);  %compare to target variables
values = str2double(values(loc(tf)));  %convert to numeric
AllData(k,tf)=values;   %add to AllData matrix
end
AveData=nanmean(AllData,1);  %average over files
============================================================
Information listing created by :  T40118
Date                           :  29.08.2013 11:07:12
Current work part              :  FA00AAC41319/002
Node name                      :  tofdsk03221
============================================================
Work Part            FA00AAC41319/002 : 08/29/13 11:07 
Information Units    kg - mm
Perimeter            =     765.13878188660
Area                 =   11875.0
First Moments
MY                   =  -109375.0
MX                   =  -1062500.0
Center of Mass
Xbar                 =      -9.21052631578950
Ybar                 =     -89.4736842105260
Moments of Inertia (Work)
Ixxw                 =  110677083.333330
Iyyw                 =  25716145.8333330
Moments of Inertia (Centroidal)
Ixx                  =  15611293.8596490
Iyy                  =  24708744.5175440
Moment of Inertia (Polar)
                   =  40320038.3771930
Product of Inertia (Work)
Pxyw                 =  20507812.50
Product of Inertia (Centroidal)
Pxy                  =  10721628.2894740
Radii of Gyration (Work)
Rgxw                 =      96.5410557151540
Rgyw                 =      46.5356871168630
Radii of Gyration (Centroidal)
Rgx                  =      36.2578994481410
Rgy                  =      45.6150893940230
Radii of Gyration (Polar)
                   =      58.2698176830530