How to plot from txt file using textscan?

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MG
MG 2020-10-11
评论： MG 2020-10-11
XFOIL Version 6.99
Calculated polar for: NACA 2408
1 1 Reynolds number fixed Mach number fixed
xtrf = 1.000 (top) 1.000 (bottom)
Mach = 0.000 Re = 9.000 e 6 Ncrit = 9.000
alpha CL CD CDp CM Top_Xtr Bot_Xtr
------ -------- --------- --------- -------- -------- --------
0.000 0.2388 0.00480 0.00041 -0.0529 0.4528 0.2191
1.000 0.3512 0.00477 0.00048 -0.0532 0.3796 0.3528
2.000 0.4613 0.00494 0.00072 -0.0533 0.2523 0.5660
4.000 0.6729 0.00562 0.00159 -0.0513 0.0456 0.9816
5.000 0.7881 0.00625 0.00207 -0.0524 0.0199 1.0000
6.000 0.8975 0.00690 0.00262 -0.0521 0.0110 1.0000
7.000 1.0060 0.00760 0.00326 -0.0518 0.0076 1.0000
8.000 1.1129 0.00842 0.00404 -0.0513 0.0053 1.0000
9.000 1.2181 0.00931 0.00492 -0.0506 0.0044 1.0000
11.000 1.4217 0.01152 0.00716 -0.0484 0.0032 1.0000
12.000 1.5182 0.01294 0.00863 -0.0467 0.0027 1.0000
13.000 1.6086 0.01477 0.01056 -0.0441 0.0022 1.0000
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Walter Roberson
Walter Roberson 2020-10-11
You could probably add a 'HeaderLines' option to the detectImportOptions. I think it might be 'HeaderLines', 9
MG
MG 2020-10-11
Thanks! it works
filename = 'Save_Polar.txt';
opt = detectImportOptions(filename);
data = readtable(filename, opt);
D=data(6:end,1:5);
Alpha =D{:,1};
CL =D{:,2};
CD =D{:,3};
CDp =D{:,4};
CM =D{:,5};

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Paul
Paul 2020-10-11
I’ve been having a lot of success lately in these types of problems by using extractFileText to read it all into a string, and then using a few manipulations to get to the data. Works well if you have a well-defined file format.

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