Reading alphanumeric text file as separate lines

Hi,

I am having a text file it contains datasets as wells as tags i want to separate out lines which starts with alphabets.can anyone please help me out with this ?

for example i want to extract out following contents separately from the attached file

*_ _ _ _ _ _strings:
Patient Name: Amalan
Age:  26
Tuesday, May 30, 2017
6:57:26 PM
Reference_spo2:98   185823.869933-1
TAG_time:185726.335642-1_____*_
datasets:
*_503616.000000  477452.000000  1473854.000000  185726.319642
504245.000000  478256.000000  1475081.000000  185726.320641
506299.000000  478958.000000  1475323.000000  185726.321641
506997.000000  480317.000000  1475611.000000  185726.322642*
*507196.000000  481012.000000  1475778.000000  185726.323642_

[Stephen23]

The file that you have uploaded and the file format that you have shown in your question are quite different: the lines are in a different order ("TAG_time" and "Reference" in the middle of the numeric data), and different lines exist (e.g. "datasets:"). This does not help us. We have no idea which of these is correct, or if both of these, or if there might be a wide range of input files formats that you want to be able to import, with other lines or different orders. It does not help because it makes your task specification unclear. It also does not help because while it is certainly possible to write code to read files with a range of formats, the wider the range of possible file formats the more complex the code. The stricter you can define the file format the simpler the code.

I would have been happy to write you something, but unless you specify exactly the format that needs to be imported then this would end up being one of those endless games of "I want A" -> okay, here is A ... "No, it needs to do B" -> here is B ... "Why is it not doing C?" -> you didn't ask for C, but here is C ... "I forgot to mention, my real files have D" -> sure, goodbye.

Please specify your file format accurately. Then you will get help.

Answer 1

[Walter Roberson]

S = fileread('data.txt');
as_lines = regexp(S, '\r?\n', 'split');

alphabetic_lines = regexp(as_lines, '^[A-Za-z].*$', 'match');