How to get data after a specific word in the form of cell arrays

Hello guys

I have a txt file containing a lot of "include" word, and I need all data after "include" word for example in first row after "include" i want the numbers after "include:" in an array and if these numbers are not between -6.5 and 6.5 delete them and put the remaining numbers in an array.then put the -6.5 , 6.5 , sin(x^2) and diff in an 2*4 cell array is named myArray and when i call the myArray{1}{1} it gives me -6.5.and when it's done, go to the next "include" .thanks a lot for your help.

include:-5 -20 -6 -8 10 12 16
-6.5 6.5
sin(x^2)
diff
Some text written(We have a different sentence between each "include" word)---
include:7 2 -5 -4 -7 -9 -3 20
-5 5
cos(x^2)
diff
Some text written(We have a different sentence between each "include" word)---

[Stephen23]

@Ali Ra: please upload a sample text file by clicking the paperclip button.

[Ali Ra]

OK the file is uploaded.

Answer 1

[per isakson]

I'm stuck! (I need a more detailed instruction in a list format.)

%%
str = fileread( 'SampleText.txt' );
pos = strfind( str, 'include:' );
cac = regexp( str(pos(1):end), 'include:', 'split' );
cac(1) = []; 
%%
for buf = cac
    block = strsplit( buf{1}, '\r\n' );
    x   = sscanf( block{1}, '%f' );
    lim = sscanf( block{2}, '%f' );
    exp = strtrim( block{3} );
    exp = strrep( exp, '^', '.^' );
    fcn = strtrim( block{4} );
    x( x<lim(1) | x>lim(2) ) = [];
    y = eval(exp);
    z = feval( fcn, y );
end

Matlab doesn't recognize int and self

diff of what?

[Stephen23]

Ali Ra's "Answer" moved here:

Thank a lot , but when i run the code it gives me this error:

Error using eval
Undefined function or variable 'int'.

[Walter Roberson]

    exp = strrep( exp, '^', '.^' );
    

You should have a look at vectorize()

At one point in the input, instead of there being a pair of lines along the lines of

cos(x^2)
diff

There is

int
self

The intended meaning of that is not clear.

[per isakson]

"You should have a look at vectorize()" Indeed! I've missed that function for all those years.

Please replace

exp = strtrim( block{3} );
exp = strrep( exp, '^', '.^' );

by

exprn = strtrim( block{3} );
exprn = vectorize( exprn );

and

y = eval(exp);

by

y = eval(exprn);

exprn is a better name of a variable. exp() is a function of Matlab.

[per isakson]

@Ali Ra

You write "[...] when i [sic] run the code it gives me this error:". Obviously, you have tried the code of my answer, but ignored the rest. I know that the code throws errors and that assigning the result to myArray is still missing.

Why don't you step through my code in debug mode and tell me what is correct and what is wrong. As I said, I'm stuck. See: Debug a MATLAB Program and Examine Values While Debugging

And you must tell us the meaning of int and self

Answer 2

[Image Analyst]

Try this. I think it does what you want:

fullFileName = fullfile(pwd, 'SampleText.txt');
% Open the file.
fileID = fopen(fullFileName, 'rt');
% Read the first line of the file.
textLine = fgetl(fileID);
count = 1;
while ischar(textLine)
	fprintf('Processing line : %s\n', textLine);
	if startsWith(textLine, 'include')
		% Extract just the numbers part.
		str = textLine(9:end)
		% Get the numbers on the include line.
		includeNumbers = sscanf(str, '%f ');
		% Read the next line under the include line.
		textLine = fgetl(fileID);
		% Get the two numbers on that line.
		twoNumbers = sscanf(textLine, '%f ');
		% Extract only those inside the range
		mask = includeNumbers >= min(twoNumbers) & includeNumbers <= max(twoNumbers);
		includeNumbers = includeNumbers(mask);
		% Store the "include" numbers that are in range into a cell array.
		caInclude{count} = includeNumbers;
		
		% "then put the -6.5 , 6.5 , sin(x^2) and diff in an 2*4 cell array is named myArray"
		myArray{count, 1} = min(twoNumbers);
		myArray{count, 2} = max(twoNumbers);
		myArray{count, 3} = 'sin(x^2)';
		myArray{count, 4} = 'diff';
		count = count + 1;
	end
	% Read the next line.
	textLine = fgetl(fileID);
end
% All done reading all lines, so close the file.
fclose(fileID);
celldisp(caInclude);
celldisp(myArray);

[Image Analyst]

In case you aren't going to run the code, here is what it produces. It produces the numbers on the "include" line that are in the range on the line below it in the "caInclude" cell array. Then it makes the other cell array you wanted, called "myArray" that has

1. the min of the range in column 1,
2. the max of the range in column 2,
3. sin(x^2) in column 3, and
4. diff in column 4

caInclude{1} =
    -5
    -6
caInclude{2} =
     2
    -5
    -4
    -3
caInclude{3} =
                       2.1
                       1.2
                      0.71
                       1.5
                      2.25
                      3.25
                      2.01
caInclude{4} =
                       3.1
                       4.2
                      5.25
                       5.5
                      4.65
                      0.25
                         2
myArray{1,1} =
                      -6.5
myArray{2,1} =
    -5
myArray{3,1} =
                      -5.5
myArray{4,1} =
                      -6.5
myArray{1,2} =
                       6.5
myArray{2,2} =
     5
myArray{3,2} =
                       3.3
myArray{4,2} =
                       6.5
myArray{1,3} =
sin(x^2)
myArray{2,3} =
sin(x^2)
myArray{3,3} =
sin(x^2)
myArray{4,3} =
sin(x^2)
myArray{1,4} =
diff
myArray{2,4} =
diff
myArray{3,4} =
diff
myArray{4,4} =
diff