Solving for mean from a file imported to matlab

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Kevin 2013-11-22

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https://ww2.mathworks.cn/matlabcentral/answers/107139-solving-for-mean-from-a-file-imported-to-matlab

评论： Walter Roberson 2013-11-22

In a file that is formatted like

6-37.4-48.9-66.8-82.0-94.4 valid
2-32.7-47.0-68.2 valid
9-37.7-49.0-68.1-82.6-93.8 valid
5-33.3-51.7-64.4-83.3 valid
6-39.9-50.1-68.8-80.9-91.5-107.0 corrupted

I am having trouble extracting the numbers from each line of code (amount of lines is in the hundreds) and finding the mean of all numbers. I have attempted to open the file and then use a while loop with a regexp function to draw out all the numbers and then convert the class back to double using str2num (still in the while loop) however when I attempt to use function sum or mean at any given point it says it cannot convert class cell with those functions.