command strategy for converting the following multi table text file into matlab array

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Hello , I have the following attached file.
i need to create in the most effiecient code way.
i have a table i need to skip two first line.
then i need to read each line and and put it into a 2D array.
where i have a problem of how to read properly the line and disregard the chars which do not represent the valueble data.
after that i need to do the same thing for the next table over and over till my file ends(i dont know how many tables are there)
is there some wat i could accoplish that without making 10000 loop and read each char?
i'll be happy for some advice regarding a startegy to how properly read this file.
Thanks.
  5 comentarios
fima v
fima v el 15 de Jul. de 2022
yes sorry there are 3, but it could be 20.
it will be good to have some general trick for N subtables
Voss
Voss el 15 de Jul. de 2022
"it will be good to have some general trick for N subtables"
All approaches shown so far work for files containing any number of tables.

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Respuesta aceptada

Jon
Jon el 15 de Jul. de 2022
If you don't know how many rows there are in each data set or where the data rows begin and end then you could do this:
% read data into cell arrray
A = readcell('file.txt','commentStyle','-'); % ignore lines with ------
% find header rows
idxHdr =find(strcmp(A(:,1),'Frequency'));
% calculate starting row of each data set
startRow = idxHdr + 1;
% calculate ending row of each data set
endRow = [idxHdr(2:end)-1;size(A,1) ];
% make cell array of 2d arrays, one element for each data set
numSets = numel(idxHdr);
dataSets = cell(numSets,1); % preallocate cell array
% loop through individual data sets (each one begins with a header)
for k = 1:numSets
dataSets{k} = cell2mat(A(startRow(k):endRow(k),1:2));
end
  4 comentarios
Jon
Jon el 15 de Jul. de 2022
Editada: Jon el 15 de Jul. de 2022
Ooops, for the 3d array the line A = A(idxNumeric ... should be replaced by
A = cell2mat(A(idxNumeric,1:2));
so result will be an array of doubles not a cell. So whole thing looks like:
% read data into cell arrray
numSamples = 1001;
A = readcell('file.txt');
% find the numeric rows
idxNumeric = find(cellfun(@isnumeric,(A(:,1))));
% just keep these values
A = cell2mat(A(idxNumeric,1:2));
% put them into a 3d array with a page (3rd dimension) for each dataset
data = reshape(A',2,1001,3); % reshape takes data columnwise so use transpose
data = permute(data,[2,1,3]); % undo the transpose for each 2-d data set
Jon
Jon el 15 de Jul. de 2022
One minor improvement. I realized the find command was unecessary, you can just use logical indexing, so replace
idxNumeric = find(cellfun(@isnumeric,(A(:,1))));
with
idxNumeric = cellfun(@isnumeric,(A(:,1)));

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Más respuestas (1)

Voss
Voss el 15 de Jul. de 2022
fid = fopen('file.txt');
data = {};
while ~feof(fid)
fgetl(fid);
fgetl(fid);
data{end+1} = reshape(fscanf(fid,'%f'),2,[]).';
end
fclose(fid);
disp(data) % cell array of 2D arrays
{1001×2 double} {1001×2 double} {1001×2 double}
disp(data{1})
8.0000 -16.4910 8.0040 -16.5085 8.0080 -16.5246 8.0120 -16.5393 8.0160 -16.5526 8.0200 -16.5644 8.0240 -16.5748 8.0280 -16.5837 8.0320 -16.5913 8.0360 -16.5974 8.0400 -16.6021 8.0440 -16.6054 8.0480 -16.6073 8.0520 -16.6079 8.0560 -16.6070 8.0600 -16.6049 8.0640 -16.6014 8.0680 -16.5966 8.0720 -16.5905 8.0760 -16.5831 8.0800 -16.5745 8.0840 -16.5646 8.0880 -16.5536 8.0920 -16.5414 8.0960 -16.5280 8.1000 -16.5135 8.1040 -16.4978 8.1080 -16.4812 8.1120 -16.4634 8.1160 -16.4446 8.1200 -16.4249 8.1240 -16.4042 8.1280 -16.3825 8.1320 -16.3600 8.1360 -16.3365 8.1400 -16.3123 8.1440 -16.2872 8.1480 -16.2613 8.1520 -16.2346 8.1560 -16.2073 8.1600 -16.1792 8.1640 -16.1504 8.1680 -16.1210 8.1720 -16.0910 8.1760 -16.0604 8.1800 -16.0293 8.1840 -15.9976 8.1880 -15.9654 8.1920 -15.9327 8.1960 -15.8996 8.2000 -15.8661 8.2040 -15.8321 8.2080 -15.7978 8.2120 -15.7631 8.2160 -15.7281 8.2200 -15.6928 8.2240 -15.6571 8.2280 -15.6213 8.2320 -15.5851 8.2360 -15.5488 8.2400 -15.5123 8.2440 -15.4755 8.2480 -15.4386 8.2520 -15.4016 8.2560 -15.3644 8.2600 -15.3272 8.2640 -15.2898 8.2680 -15.2524 8.2720 -15.2149 8.2760 -15.1773 8.2800 -15.1398 8.2840 -15.1022 8.2880 -15.0646 8.2920 -15.0270 8.2960 -14.9894 8.3000 -14.9519 8.3040 -14.9145 8.3080 -14.8770 8.3120 -14.8397 8.3160 -14.8025 8.3200 -14.7653 8.3240 -14.7282 8.3280 -14.6913 8.3320 -14.6545 8.3360 -14.6178 8.3400 -14.5812 8.3440 -14.5448 8.3480 -14.5086 8.3520 -14.4725 8.3560 -14.4365 8.3600 -14.4008 8.3640 -14.3652 8.3680 -14.3299 8.3720 -14.2947 8.3760 -14.2597 8.3800 -14.2249 8.3840 -14.1904 8.3880 -14.1560 8.3920 -14.1219 8.3960 -14.0880 8.4000 -14.0544 8.4040 -14.0209 8.4080 -13.9877 8.4120 -13.9548 8.4160 -13.9221 8.4200 -13.8896 8.4240 -13.8574 8.4280 -13.8255 8.4320 -13.7938 8.4360 -13.7624 8.4400 -13.7312 8.4440 -13.7003 8.4480 -13.6697 8.4520 -13.6393 8.4560 -13.6092 8.4600 -13.5794 8.4640 -13.5499 8.4680 -13.5206 8.4720 -13.4916 8.4760 -13.4629 8.4800 -13.4345 8.4840 -13.4064 8.4880 -13.3785 8.4920 -13.3509 8.4960 -13.3237 8.5000 -13.2967 8.5040 -13.2700 8.5080 -13.2435 8.5120 -13.2174 8.5160 -13.1916 8.5200 -13.1660 8.5240 -13.1408 8.5280 -13.1158 8.5320 -13.0912 8.5360 -13.0668 8.5400 -13.0427 8.5440 -13.0189 8.5480 -12.9954 8.5520 -12.9723 8.5560 -12.9493 8.5600 -12.9267 8.5640 -12.9044 8.5680 -12.8824 8.5720 -12.8607 8.5760 -12.8393 8.5800 -12.8181 8.5840 -12.7973 8.5880 -12.7767 8.5920 -12.7565 8.5960 -12.7365 8.6000 -12.7169 8.6040 -12.6975 8.6080 -12.6784 8.6120 -12.6596 8.6160 -12.6411 8.6200 -12.6229 8.6240 -12.6050 8.6280 -12.5874 8.6320 -12.5701 8.6360 -12.5531 8.6400 -12.5363 8.6440 -12.5199 8.6480 -12.5037 8.6520 -12.4878 8.6560 -12.4723 8.6600 -12.4570 8.6640 -12.4420 8.6680 -12.4273 8.6720 -12.4128 8.6760 -12.3987 8.6800 -12.3848 8.6840 -12.3713 8.6880 -12.3580 8.6920 -12.3450 8.6960 -12.3323 8.7000 -12.3199 8.7040 -12.3078 8.7080 -12.2959 8.7120 -12.2844 8.7160 -12.2731 8.7200 -12.2621 8.7240 -12.2514 8.7280 -12.2409 8.7320 -12.2308 8.7360 -12.2209 8.7400 -12.2113 8.7440 -12.2020 8.7480 -12.1930 8.7520 -12.1843 8.7560 -12.1758 8.7600 -12.1676 8.7640 -12.1597 8.7680 -12.1521 8.7720 -12.1448 8.7760 -12.1377 8.7800 -12.1309 8.7840 -12.1244 8.7880 -12.1182 8.7920 -12.1122 8.7960 -12.1066 8.8000 -12.1012 8.8040 -12.0960 8.8080 -12.0912 8.8120 -12.0866 8.8160 -12.0823 8.8200 -12.0783 8.8240 -12.0746 8.8280 -12.0711 8.8320 -12.0679 8.8360 -12.0650 8.8400 -12.0623 8.8440 -12.0600 8.8480 -12.0579 8.8520 -12.0561 8.8560 -12.0545 8.8600 -12.0532 8.8640 -12.0523 8.8680 -12.0515 8.8720 -12.0511 8.8760 -12.0509 8.8800 -12.0510 8.8840 -12.0514 8.8880 -12.0520 8.8920 -12.0529 8.8960 -12.0541 8.9000 -12.0556 8.9040 -12.0573 8.9080 -12.0593 8.9120 -12.0616 8.9160 -12.0642 8.9200 -12.0670 8.9240 -12.0701 8.9280 -12.0735 8.9320 -12.0772 8.9360 -12.0811 8.9400 -12.0853 8.9440 -12.0898 8.9480 -12.0945 8.9520 -12.0996 8.9560 -12.1049 8.9600 -12.1104 8.9640 -12.1163 8.9680 -12.1224 8.9720 -12.1288 8.9760 -12.1355 8.9800 -12.1425 8.9840 -12.1497 8.9880 -12.1572 8.9920 -12.1650 8.9960 -12.1731 9.0000 -12.1814 9.0040 -12.1900 9.0080 -12.1989 9.0120 -12.2081 9.0160 -12.2176 9.0200 -12.2273 9.0240 -12.2374 9.0280 -12.2477 9.0320 -12.2583 9.0360 -12.2691 9.0400 -12.2803 9.0440 -12.2917 9.0480 -12.3034 9.0520 -12.3154 9.0560 -12.3277 9.0600 -12.3403 9.0640 -12.3532 9.0680 -12.3663 9.0720 -12.3798 9.0760 -12.3935 9.0800 -12.4075 9.0840 -12.4218 9.0880 -12.4364 9.0920 -12.4513 9.0960 -12.4665 9.1000 -12.4820 9.1040 -12.4978 9.1080 -12.5138 9.1120 -12.5302 9.1160 -12.5469 9.1200 -12.5638 9.1240 -12.5811 9.1280 -12.5986 9.1320 -12.6165 9.1360 -12.6347 9.1400 -12.6531 9.1440 -12.6719 9.1480 -12.6910 9.1520 -12.7104 9.1560 -12.7301 9.1600 -12.7501 9.1640 -12.7704 9.1680 -12.7910 9.1720 -12.8120 9.1760 -12.8332 9.1800 -12.8548 9.1840 -12.8767 9.1880 -12.8989 9.1920 -12.9214 9.1960 -12.9443 9.2000 -12.9674 9.2040 -12.9909 9.2080 -13.0148 9.2120 -13.0389 9.2160 -13.0634 9.2200 -13.0882 9.2240 -13.1134 9.2280 -13.1388 9.2320 -13.1647 9.2360 -13.1908 9.2400 -13.2173 9.2440 -13.2442 9.2480 -13.2713 9.2520 -13.2989 9.2560 -13.3267 9.2600 -13.3550 9.2640 -13.3836 9.2680 -13.4125 9.2720 -13.4418 9.2760 -13.4714 9.2800 -13.5015 9.2840 -13.5318 9.2880 -13.5626 9.2920 -13.5937 9.2960 -13.6252 9.3000 -13.6570 9.3040 -13.6893 9.3080 -13.7219 9.3120 -13.7549 9.3160 -13.7883 9.3200 -13.8220 9.3240 -13.8562 9.3280 -13.8907 9.3320 -13.9257 9.3360 -13.9610 9.3400 -13.9968 9.3440 -14.0329 9.3480 -14.0695 9.3520 -14.1065 9.3560 -14.1438 9.3600 -14.1816 9.3640 -14.2199 9.3680 -14.2585 9.3720 -14.2976 9.3760 -14.3371 9.3800 -14.3771 9.3840 -14.4175 9.3880 -14.4583 9.3920 -14.4996 9.3960 -14.5413 9.4000 -14.5835 9.4040 -14.6262 9.4080 -14.6693 9.4120 -14.7129 9.4160 -14.7569 9.4200 -14.8015 9.4240 -14.8465 9.4280 -14.8920 9.4320 -14.9380 9.4360 -14.9846 9.4400 -15.0316 9.4440 -15.0791 9.4480 -15.1271 9.4520 -15.1757 9.4560 -15.2248 9.4600 -15.2744 9.4640 -15.3246 9.4680 -15.3753 9.4720 -15.4265 9.4760 -15.4783 9.4800 -15.5307 9.4840 -15.5836 9.4880 -15.6371 9.4920 -15.6912 9.4960 -15.7459 9.5000 -15.8012 9.5040 -15.8571 9.5080 -15.9136 9.5120 -15.9708 9.5160 -16.0285 9.5200 -16.0869 9.5240 -16.1460 9.5280 -16.2057 9.5320 -16.2660 9.5360 -16.3270 9.5400 -16.3888 9.5440 -16.4512 9.5480 -16.5143 9.5520 -16.5781 9.5560 -16.6426 9.5600 -16.7079 9.5640 -16.7739 9.5680 -16.8407 9.5720 -16.9082 9.5760 -16.9765 9.5800 -17.0456 9.5840 -17.1155 9.5880 -17.1862 9.5920 -17.2578 9.5960 -17.3302 9.6000 -17.4034 9.6040 -17.4775 9.6080 -17.5525 9.6120 -17.6284 9.6160 -17.7052 9.6200 -17.7830 9.6240 -17.8616 9.6280 -17.9413 9.6320 -18.0219 9.6360 -18.1035 9.6400 -18.1862 9.6440 -18.2699 9.6480 -18.3546 9.6520 -18.4404 9.6560 -18.5273 9.6600 -18.6154 9.6640 -18.7046 9.6680 -18.7949 9.6720 -18.8864 9.6760 -18.9792 9.6800 -19.0732 9.6840 -19.1684 9.6880 -19.2650 9.6920 -19.3628 9.6960 -19.4620 9.7000 -19.5626 9.7040 -19.6647 9.7080 -19.7681 9.7120 -19.8730 9.7160 -19.9795 9.7200 -20.0875 9.7240 -20.1971 9.7280 -20.3083 9.7320 -20.4212 9.7360 -20.5358 9.7400 -20.6521 9.7440 -20.7703 9.7480 -20.8903 9.7520 -21.0122 9.7560 -21.1360 9.7600 -21.2619 9.7640 -21.3898 9.7680 -21.5198 9.7720 -21.6520 9.7760 -21.7865 9.7800 -21.9233 9.7840 -22.0624 9.7880 -22.2040 9.7920 -22.3482 9.7960 -22.4950 9.8000 -22.6444 9.8040 -22.7967 9.8080 -22.9518 9.8120 -23.1099 9.8160 -23.2711 9.8200 -23.4354 9.8240 -23.6031 9.8280 -23.7742 9.8320 -23.9488 9.8360 -24.1272 9.8400 -24.3093 9.8440 -24.4954 9.8480 -24.6856 9.8520 -24.8802 9.8560 -25.0792 9.8600 -25.2828 9.8640 -25.4913 9.8680 -25.7048 9.8720 -25.9236 9.8760 -26.1480 9.8800 -26.3780 9.8840 -26.6141 9.8880 -26.8565 9.8920 -27.1054 9.8960 -27.3612 9.9000 -27.6243 9.9040 -27.8949 9.9080 -28.1734 9.9120 -28.4603 9.9160 -28.7558 9.9200 -29.0605 9.9240 -29.3746 9.9280 -29.6988 9.9320 -30.0333 9.9360 -30.3787 9.9400 -30.7352 9.9440 -31.1033 9.9480 -31.4833 9.9520 -31.8753 9.9560 -32.2793 9.9600 -32.6952 9.9640 -33.1223 9.9680 -33.5597 9.9720 -34.0056 9.9760 -34.4578 9.9800 -34.9125 9.9840 -35.3648 9.9880 -35.8081 9.9920 -36.2335 9.9960 -36.6303 10.0000 -36.9855 10.0040 -37.2850 10.0080 -37.5143 10.0120 -37.6609 10.0160 -37.7157 10.0200 -37.6751 10.0240 -37.5418 10.0280 -37.3239 10.0320 -37.0335 10.0360 -36.6849 10.0400 -36.2925 10.0440 -35.8694 10.0480 -35.4268 10.0520 -34.9737 10.0560 -34.5173 10.0600 -34.0628 10.0640 -33.6139 10.0680 -33.1732 10.0720 -32.7426 10.0760 -32.3231 10.0800 -31.9154 10.0840 -31.5197 10.0880 -31.1360 10.0920 -30.7641 10.0960 -30.4039 10.1000 -30.0550 10.1040 -29.7170 10.1080 -29.3894 10.1120 -29.0718 10.1160 -28.7639 10.1200 -28.4651 10.1240 -28.1751 10.1280 -27.8934 10.1320 -27.6198 10.1360 -27.3537 10.1400 -27.0949 10.1440 -26.8431 10.1480 -26.5978 10.1520 -26.3589 10.1560 -26.1261 10.1600 -25.8990 10.1640 -25.6775 10.1680 -25.4613 10.1720 -25.2501 10.1760 -25.0439 10.1800 -24.8423 10.1840 -24.6452 10.1880 -24.4524 10.1920 -24.2637 10.1960 -24.0791 10.2000 -23.8983 10.2040 -23.7211 10.2080 -23.5476 10.2120 -23.3774 10.2160 -23.2106 10.2200 -23.0470 10.2240 -22.8864 10.2280 -22.7289 10.2320 -22.5742 10.2360 -22.4223 10.2400 -22.2732 10.2440 -22.1266 10.2480 -21.9826 10.2520 -21.8410 10.2560 -21.7019 10.2600 -21.5650 10.2640 -21.4304 10.2680 -21.2979 10.2720 -21.1676 10.2760 -21.0394 10.2800 -20.9131 10.2840 -20.7888 10.2880 -20.6664 10.2920 -20.5458 10.2960 -20.4270 10.3000 -20.3100 10.3040 -20.1946 10.3080 -20.0810 10.3120 -19.9689 10.3160 -19.8585 10.3200 -19.7495 10.3240 -19.6421 10.3280 -19.5362 10.3320 -19.4317 10.3360 -19.3286 10.3400 -19.2268 10.3440 -19.1264 10.3480 -19.0273 10.3520 -18.9295 10.3560 -18.8330 10.3600 -18.7377 10.3640 -18.6435 10.3680 -18.5506 10.3720 -18.4588 10.3760 -18.3681 10.3800 -18.2786 10.3840 -18.1901 10.3880 -18.1027 10.3920 -18.0163 10.3960 -17.9309 10.4000 -17.8466 10.4040 -17.7632 10.4080 -17.6808 10.4120 -17.5994 10.4160 -17.5188 10.4200 -17.4392 10.4240 -17.3605 10.4280 -17.2827 10.4320 -17.2057 10.4360 -17.1296 10.4400 -17.0543 10.4440 -16.9798 10.4480 -16.9061 10.4520 -16.8333 10.4560 -16.7612 10.4600 -16.6899 10.4640 -16.6193 10.4680 -16.5495 10.4720 -16.4804 10.4760 -16.4121 10.4800 -16.3444 10.4840 -16.2774 10.4880 -16.2112 10.4920 -16.1456 10.4960 -16.0807 10.5000 -16.0164 10.5040 -15.9528 10.5080 -15.8898 10.5120 -15.8274 10.5160 -15.7657 10.5200 -15.7046 10.5240 -15.6441 10.5280 -15.5842 10.5320 -15.5248 10.5360 -15.4661 10.5400 -15.4079 10.5440 -15.3502 10.5480 -15.2932 10.5520 -15.2367 10.5560 -15.1807 10.5600 -15.1252 10.5640 -15.0703 10.5680 -15.0159 10.5720 -14.9620 10.5760 -14.9086 10.5800 -14.8558 10.5840 -14.8034 10.5880 -14.7515 10.5920 -14.7001 10.5960 -14.6491 10.6000 -14.5987 10.6040 -14.5487 10.6080 -14.4991 10.6120 -14.4500 10.6160 -14.4014 10.6200 -14.3532 10.6240 -14.3055 10.6280 -14.2581 10.6320 -14.2113 10.6360 -14.1648 10.6400 -14.1187 10.6440 -14.0731 10.6480 -14.0279 10.6520 -13.9831 10.6560 -13.9387 10.6600 -13.8947 10.6640 -13.8511 10.6680 -13.8078 10.6720 -13.7650 10.6760 -13.7225 10.6800 -13.6805 10.6840 -13.6387 10.6880 -13.5974 10.6920 -13.5564 10.6960 -13.5158 10.7000 -13.4756 10.7040 -13.4357 10.7080 -13.3962 10.7120 -13.3570 10.7160 -13.3181 10.7200 -13.2796 10.7240 -13.2414 10.7280 -13.2036 10.7320 -13.1661 10.7360 -13.1290 10.7400 -13.0921 10.7440 -13.0556 10.7480 -13.0194 10.7520 -12.9835 10.7560 -12.9480 10.7600 -12.9127 10.7640 -12.8778 10.7680 -12.8431 10.7720 -12.8088 10.7760 -12.7748 10.7800 -12.7411 10.7840 -12.7076 10.7880 -12.6745 10.7920 -12.6416 10.7960 -12.6091 10.8000 -12.5768 10.8040 -12.5448 10.8080 -12.5131 10.8120 -12.4817 10.8160 -12.4506 10.8200 -12.4197 10.8240 -12.3891 10.8280 -12.3588 10.8320 -12.3287 10.8360 -12.2989 10.8400 -12.2694 10.8440 -12.2401 10.8480 -12.2111 10.8520 -12.1824 10.8560 -12.1539 10.8600 -12.1257 10.8640 -12.0977 10.8680 -12.0699 10.8720 -12.0425 10.8760 -12.0152 10.8800 -11.9882 10.8840 -11.9615 10.8880 -11.9350 10.8920 -11.9087 10.8960 -11.8827 10.9000 -11.8569 10.9040 -11.8314 10.9080 -11.8061 10.9120 -11.7810 10.9160 -11.7562 10.9200 -11.7315 10.9240 -11.7071 10.9280 -11.6830 10.9320 -11.6590 10.9360 -11.6353 10.9400 -11.6118 10.9440 -11.5885 10.9480 -11.5655 10.9520 -11.5427 10.9560 -11.5200 10.9600 -11.4976 10.9640 -11.4754 10.9680 -11.4535 10.9720 -11.4317 10.9760 -11.4101 10.9800 -11.3888 10.9840 -11.3676 10.9880 -11.3467 10.9920 -11.3260 10.9960 -11.3054 11.0000 -11.2851 11.0040 -11.2650 11.0080 -11.2451 11.0120 -11.2254 11.0160 -11.2058 11.0200 -11.1865 11.0240 -11.1674 11.0280 -11.1485 11.0320 -11.1297 11.0360 -11.1112 11.0400 -11.0928 11.0440 -11.0747 11.0480 -11.0567 11.0520 -11.0389 11.0560 -11.0213 11.0600 -11.0039 11.0640 -10.9867 11.0680 -10.9697 11.0720 -10.9528 11.0760 -10.9361 11.0800 -10.9197 11.0840 -10.9034 11.0880 -10.8873 11.0920 -10.8713 11.0960 -10.8556 11.1000 -10.8400 11.1040 -10.8246 11.1080 -10.8094 11.1120 -10.7944 11.1160 -10.7795 11.1200 -10.7648 11.1240 -10.7503 11.1280 -10.7360 11.1320 -10.7218 11.1360 -10.7078 11.1400 -10.6940 11.1440 -10.6804 11.1480 -10.6669 11.1520 -10.6536 11.1560 -10.6405 11.1600 -10.6275 11.1640 -10.6147 11.1680 -10.6021 11.1720 -10.5897 11.1760 -10.5774 11.1800 -10.5653 11.1840 -10.5533 11.1880 -10.5416 11.1920 -10.5300 11.1960 -10.5185 11.2000 -10.5072 11.2040 -10.4961 11.2080 -10.4852 11.2120 -10.4744 11.2160 -10.4638 11.2200 -10.4533 11.2240 -10.4431 11.2280 -10.4329 11.2320 -10.4230 11.2360 -10.4132 11.2400 -10.4035 11.2440 -10.3941 11.2480 -10.3848 11.2520 -10.3756 11.2560 -10.3667 11.2600 -10.3578 11.2640 -10.3492 11.2680 -10.3407 11.2720 -10.3324 11.2760 -10.3242 11.2800 -10.3162 11.2840 -10.3083 11.2880 -10.3007 11.2920 -10.2931 11.2960 -10.2858 11.3000 -10.2786 11.3040 -10.2716 11.3080 -10.2647 11.3120 -10.2580 11.3160 -10.2514 11.3200 -10.2451 11.3240 -10.2388 11.3280 -10.2328 11.3320 -10.2269 11.3360 -10.2212 11.3400 -10.2156 11.3440 -10.2102 11.3480 -10.2050 11.3520 -10.1999 11.3560 -10.1950 11.3600 -10.1903 11.3640 -10.1857 11.3680 -10.1813 11.3720 -10.1770 11.3760 -10.1730 11.3800 -10.1691 11.3840 -10.1653 11.3880 -10.1617 11.3920 -10.1583 11.3960 -10.1551 11.4000 -10.1521 11.4040 -10.1492 11.4080 -10.1464 11.4120 -10.1439 11.4160 -10.1415 11.4200 -10.1393 11.4240 -10.1373 11.4280 -10.1354 11.4320 -10.1337 11.4360 -10.1322 11.4400 -10.1309 11.4440 -10.1298 11.4480 -10.1288 11.4520 -10.1280 11.4560 -10.1274 11.4600 -10.1270 11.4640 -10.1267 11.4680 -10.1266 11.4720 -10.1268 11.4760 -10.1271 11.4800 -10.1276 11.4840 -10.1282 11.4880 -10.1291 11.4920 -10.1302 11.4960 -10.1314 11.5000 -10.1328 11.5040 -10.1345 11.5080 -10.1363 11.5120 -10.1383 11.5160 -10.1405 11.5200 -10.1429 11.5240 -10.1456 11.5280 -10.1484 11.5320 -10.1514 11.5360 -10.1546 11.5400 -10.1581 11.5440 -10.1617 11.5480 -10.1655 11.5520 -10.1696 11.5560 -10.1739 11.5600 -10.1783 11.5640 -10.1830 11.5680 -10.1880 11.5720 -10.1931 11.5760 -10.1985 11.5800 -10.2040 11.5840 -10.2098 11.5880 -10.2159 11.5920 -10.2221 11.5960 -10.2286 11.6000 -10.2353 11.6040 -10.2423 11.6080 -10.2495 11.6120 -10.2569 11.6160 -10.2646 11.6200 -10.2725 11.6240 -10.2807 11.6280 -10.2891 11.6320 -10.2978 11.6360 -10.3067 11.6400 -10.3159 11.6440 -10.3254 11.6480 -10.3351 11.6520 -10.3450 11.6560 -10.3553 11.6600 -10.3658 11.6640 -10.3766 11.6680 -10.3876 11.6720 -10.3990 11.6760 -10.4106 11.6800 -10.4225 11.6840 -10.4347 11.6880 -10.4472 11.6920 -10.4599 11.6960 -10.4730 11.7000 -10.4864 11.7040 -10.5001 11.7080 -10.5141 11.7120 -10.5284 11.7160 -10.5430 11.7200 -10.5580 11.7240 -10.5732 11.7280 -10.5888 11.7320 -10.6048 11.7360 -10.6210 11.7400 -10.6376 11.7440 -10.6546 11.7480 -10.6719 11.7520 -10.6896 11.7560 -10.7076 11.7600 -10.7259 11.7640 -10.7447 11.7680 -10.7638 11.7720 -10.7833 11.7760 -10.8032 11.7800 -10.8234 11.7840 -10.8441 11.7880 -10.8651 11.7920 -10.8866 11.7960 -10.9084 11.8000 -10.9307 11.8040 -10.9534 11.8080 -10.9765 11.8120 -11.0001 11.8160 -11.0241 11.8200 -11.0485 11.8240 -11.0734 11.8280 -11.0987 11.8320 -11.1245 11.8360 -11.1508 11.8400 -11.1775 11.8440 -11.2048 11.8480 -11.2325 11.8520 -11.2607 11.8560 -11.2894 11.8600 -11.3187 11.8640 -11.3484 11.8680 -11.3787 11.8720 -11.4096 11.8760 -11.4409 11.8800 -11.4729 11.8840 -11.5053 11.8880 -11.5384 11.8920 -11.5720 11.8960 -11.6063 11.9000 -11.6411 11.9040 -11.6765 11.9080 -11.7126 11.9120 -11.7493 11.9160 -11.7866 11.9200 -11.8246 11.9240 -11.8632 11.9280 -11.9025 11.9320 -11.9425 11.9360 -11.9832 11.9400 -12.0246 11.9440 -12.0667 11.9480 -12.1095 11.9520 -12.1531 11.9560 -12.1974 11.9600 -12.2425 11.9640 -12.2884 11.9680 -12.3351 11.9720 -12.3826 11.9760 -12.4310 11.9800 -12.4802 11.9840 -12.5302 11.9880 -12.5811 11.9920 -12.6329 11.9960 -12.6856 12.0000 -12.7392
If you know beforehand that all tables in the file are the same size, then it may be convenient to use a 3D array instead of a cell array of 2D matrices.
  2 comentarios
fima v
fima v el 15 de Jul. de 2022
Hello VOS, could you please explain the logc of this line?
what is "end+1"?(end is the ending line of the loop its not a variable)
the reshape command is also intresting,your read the file into floating values but what is the meaning of 2,[] ?
data{end+1} = reshape(fscanf(fid,'%f'),2,[]).';
Thanks.
Voss
Voss el 15 de Jul. de 2022
Editada: Voss el 15 de Jul. de 2022
data is initially an empty cell array:
data = {};
Then, inside the loop, each time a table is read from the file, it goes into a new cell in data. That's what data{end+1} = ... does
data{end+1} = stuff; % add a new cell to the end of data, containing 'stuff'
From the documentation: "end also represents the last index of an array. For example, X(end) is the last element of X, and X(3:end) selects the third through final elements of X." (Reference: end)
reshape is there because the elements of each table are read in the order they are in the file, i.e., (row 1, col 1) then (row 1, col 2) then (row 2, col 1) and so on. So, reshaping to two rows then transposing gives you a two-column matrix with the elements in the right order as in the file.
fid = fopen('file.txt');
data = {};
while ~feof(fid)
fgetl(fid);
fgetl(fid);
temp = fscanf(fid,'%f') % notice the order of the elements shown below
data{end+1} = reshape(temp,2,[]).';
end
temp = 2002×1
8.0000 -16.4910 8.0040 -16.5085 8.0080 -16.5246 8.0120 -16.5393 8.0160 -16.5526
temp = 2002×1
8.0000 -3.1159 8.0040 -3.1165 8.0080 -3.1172 8.0120 -3.1178 8.0160 -3.1185
temp = 2002×1
8.0000 -3.1159 8.0040 -3.1165 8.0080 -3.1172 8.0120 -3.1178 8.0160 -3.1185
fclose(fid);
disp(data) % cell array of 2D arrays
{1001×2 double} {1001×2 double} {1001×2 double}
disp(data{1})
8.0000 -16.4910 8.0040 -16.5085 8.0080 -16.5246 8.0120 -16.5393 8.0160 -16.5526 8.0200 -16.5644 8.0240 -16.5748 8.0280 -16.5837 8.0320 -16.5913 8.0360 -16.5974 8.0400 -16.6021 8.0440 -16.6054 8.0480 -16.6073 8.0520 -16.6079 8.0560 -16.6070 8.0600 -16.6049 8.0640 -16.6014 8.0680 -16.5966 8.0720 -16.5905 8.0760 -16.5831 8.0800 -16.5745 8.0840 -16.5646 8.0880 -16.5536 8.0920 -16.5414 8.0960 -16.5280 8.1000 -16.5135 8.1040 -16.4978 8.1080 -16.4812 8.1120 -16.4634 8.1160 -16.4446 8.1200 -16.4249 8.1240 -16.4042 8.1280 -16.3825 8.1320 -16.3600 8.1360 -16.3365 8.1400 -16.3123 8.1440 -16.2872 8.1480 -16.2613 8.1520 -16.2346 8.1560 -16.2073 8.1600 -16.1792 8.1640 -16.1504 8.1680 -16.1210 8.1720 -16.0910 8.1760 -16.0604 8.1800 -16.0293 8.1840 -15.9976 8.1880 -15.9654 8.1920 -15.9327 8.1960 -15.8996 8.2000 -15.8661 8.2040 -15.8321 8.2080 -15.7978 8.2120 -15.7631 8.2160 -15.7281 8.2200 -15.6928 8.2240 -15.6571 8.2280 -15.6213 8.2320 -15.5851 8.2360 -15.5488 8.2400 -15.5123 8.2440 -15.4755 8.2480 -15.4386 8.2520 -15.4016 8.2560 -15.3644 8.2600 -15.3272 8.2640 -15.2898 8.2680 -15.2524 8.2720 -15.2149 8.2760 -15.1773 8.2800 -15.1398 8.2840 -15.1022 8.2880 -15.0646 8.2920 -15.0270 8.2960 -14.9894 8.3000 -14.9519 8.3040 -14.9145 8.3080 -14.8770 8.3120 -14.8397 8.3160 -14.8025 8.3200 -14.7653 8.3240 -14.7282 8.3280 -14.6913 8.3320 -14.6545 8.3360 -14.6178 8.3400 -14.5812 8.3440 -14.5448 8.3480 -14.5086 8.3520 -14.4725 8.3560 -14.4365 8.3600 -14.4008 8.3640 -14.3652 8.3680 -14.3299 8.3720 -14.2947 8.3760 -14.2597 8.3800 -14.2249 8.3840 -14.1904 8.3880 -14.1560 8.3920 -14.1219 8.3960 -14.0880 8.4000 -14.0544 8.4040 -14.0209 8.4080 -13.9877 8.4120 -13.9548 8.4160 -13.9221 8.4200 -13.8896 8.4240 -13.8574 8.4280 -13.8255 8.4320 -13.7938 8.4360 -13.7624 8.4400 -13.7312 8.4440 -13.7003 8.4480 -13.6697 8.4520 -13.6393 8.4560 -13.6092 8.4600 -13.5794 8.4640 -13.5499 8.4680 -13.5206 8.4720 -13.4916 8.4760 -13.4629 8.4800 -13.4345 8.4840 -13.4064 8.4880 -13.3785 8.4920 -13.3509 8.4960 -13.3237 8.5000 -13.2967 8.5040 -13.2700 8.5080 -13.2435 8.5120 -13.2174 8.5160 -13.1916 8.5200 -13.1660 8.5240 -13.1408 8.5280 -13.1158 8.5320 -13.0912 8.5360 -13.0668 8.5400 -13.0427 8.5440 -13.0189 8.5480 -12.9954 8.5520 -12.9723 8.5560 -12.9493 8.5600 -12.9267 8.5640 -12.9044 8.5680 -12.8824 8.5720 -12.8607 8.5760 -12.8393 8.5800 -12.8181 8.5840 -12.7973 8.5880 -12.7767 8.5920 -12.7565 8.5960 -12.7365 8.6000 -12.7169 8.6040 -12.6975 8.6080 -12.6784 8.6120 -12.6596 8.6160 -12.6411 8.6200 -12.6229 8.6240 -12.6050 8.6280 -12.5874 8.6320 -12.5701 8.6360 -12.5531 8.6400 -12.5363 8.6440 -12.5199 8.6480 -12.5037 8.6520 -12.4878 8.6560 -12.4723 8.6600 -12.4570 8.6640 -12.4420 8.6680 -12.4273 8.6720 -12.4128 8.6760 -12.3987 8.6800 -12.3848 8.6840 -12.3713 8.6880 -12.3580 8.6920 -12.3450 8.6960 -12.3323 8.7000 -12.3199 8.7040 -12.3078 8.7080 -12.2959 8.7120 -12.2844 8.7160 -12.2731 8.7200 -12.2621 8.7240 -12.2514 8.7280 -12.2409 8.7320 -12.2308 8.7360 -12.2209 8.7400 -12.2113 8.7440 -12.2020 8.7480 -12.1930 8.7520 -12.1843 8.7560 -12.1758 8.7600 -12.1676 8.7640 -12.1597 8.7680 -12.1521 8.7720 -12.1448 8.7760 -12.1377 8.7800 -12.1309 8.7840 -12.1244 8.7880 -12.1182 8.7920 -12.1122 8.7960 -12.1066 8.8000 -12.1012 8.8040 -12.0960 8.8080 -12.0912 8.8120 -12.0866 8.8160 -12.0823 8.8200 -12.0783 8.8240 -12.0746 8.8280 -12.0711 8.8320 -12.0679 8.8360 -12.0650 8.8400 -12.0623 8.8440 -12.0600 8.8480 -12.0579 8.8520 -12.0561 8.8560 -12.0545 8.8600 -12.0532 8.8640 -12.0523 8.8680 -12.0515 8.8720 -12.0511 8.8760 -12.0509 8.8800 -12.0510 8.8840 -12.0514 8.8880 -12.0520 8.8920 -12.0529 8.8960 -12.0541 8.9000 -12.0556 8.9040 -12.0573 8.9080 -12.0593 8.9120 -12.0616 8.9160 -12.0642 8.9200 -12.0670 8.9240 -12.0701 8.9280 -12.0735 8.9320 -12.0772 8.9360 -12.0811 8.9400 -12.0853 8.9440 -12.0898 8.9480 -12.0945 8.9520 -12.0996 8.9560 -12.1049 8.9600 -12.1104 8.9640 -12.1163 8.9680 -12.1224 8.9720 -12.1288 8.9760 -12.1355 8.9800 -12.1425 8.9840 -12.1497 8.9880 -12.1572 8.9920 -12.1650 8.9960 -12.1731 9.0000 -12.1814 9.0040 -12.1900 9.0080 -12.1989 9.0120 -12.2081 9.0160 -12.2176 9.0200 -12.2273 9.0240 -12.2374 9.0280 -12.2477 9.0320 -12.2583 9.0360 -12.2691 9.0400 -12.2803 9.0440 -12.2917 9.0480 -12.3034 9.0520 -12.3154 9.0560 -12.3277 9.0600 -12.3403 9.0640 -12.3532 9.0680 -12.3663 9.0720 -12.3798 9.0760 -12.3935 9.0800 -12.4075 9.0840 -12.4218 9.0880 -12.4364 9.0920 -12.4513 9.0960 -12.4665 9.1000 -12.4820 9.1040 -12.4978 9.1080 -12.5138 9.1120 -12.5302 9.1160 -12.5469 9.1200 -12.5638 9.1240 -12.5811 9.1280 -12.5986 9.1320 -12.6165 9.1360 -12.6347 9.1400 -12.6531 9.1440 -12.6719 9.1480 -12.6910 9.1520 -12.7104 9.1560 -12.7301 9.1600 -12.7501 9.1640 -12.7704 9.1680 -12.7910 9.1720 -12.8120 9.1760 -12.8332 9.1800 -12.8548 9.1840 -12.8767 9.1880 -12.8989 9.1920 -12.9214 9.1960 -12.9443 9.2000 -12.9674 9.2040 -12.9909 9.2080 -13.0148 9.2120 -13.0389 9.2160 -13.0634 9.2200 -13.0882 9.2240 -13.1134 9.2280 -13.1388 9.2320 -13.1647 9.2360 -13.1908 9.2400 -13.2173 9.2440 -13.2442 9.2480 -13.2713 9.2520 -13.2989 9.2560 -13.3267 9.2600 -13.3550 9.2640 -13.3836 9.2680 -13.4125 9.2720 -13.4418 9.2760 -13.4714 9.2800 -13.5015 9.2840 -13.5318 9.2880 -13.5626 9.2920 -13.5937 9.2960 -13.6252 9.3000 -13.6570 9.3040 -13.6893 9.3080 -13.7219 9.3120 -13.7549 9.3160 -13.7883 9.3200 -13.8220 9.3240 -13.8562 9.3280 -13.8907 9.3320 -13.9257 9.3360 -13.9610 9.3400 -13.9968 9.3440 -14.0329 9.3480 -14.0695 9.3520 -14.1065 9.3560 -14.1438 9.3600 -14.1816 9.3640 -14.2199 9.3680 -14.2585 9.3720 -14.2976 9.3760 -14.3371 9.3800 -14.3771 9.3840 -14.4175 9.3880 -14.4583 9.3920 -14.4996 9.3960 -14.5413 9.4000 -14.5835 9.4040 -14.6262 9.4080 -14.6693 9.4120 -14.7129 9.4160 -14.7569 9.4200 -14.8015 9.4240 -14.8465 9.4280 -14.8920 9.4320 -14.9380 9.4360 -14.9846 9.4400 -15.0316 9.4440 -15.0791 9.4480 -15.1271 9.4520 -15.1757 9.4560 -15.2248 9.4600 -15.2744 9.4640 -15.3246 9.4680 -15.3753 9.4720 -15.4265 9.4760 -15.4783 9.4800 -15.5307 9.4840 -15.5836 9.4880 -15.6371 9.4920 -15.6912 9.4960 -15.7459 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