What is the best way to save the output of a MATLAB script to a file AND output it to the console? I do not want to use diary b/c sometimes I try things out between script runs. Right now I use fprintf to output either to the console or to a log file. Can I do both without writing the same fprintf for both outputs?
I may be in the wrong direction, but suppose you want to output something to the console, and save it, here is what you could do:
s = 'abcd'; %The thing you want to show and save
s % Just show it
save s % Save it to file
If however, you need a specific output that only comes from the print command. Here is what I would do:
Print to a variable
Save that variable
Show that variable
This way you only need the print once.
If that also does not work out for you, you could try to write a function where you do the print, at least then you can avoid code duplication.
Related
I've been trying to make the output shown in the text file instead of the command window. Im blur right now as i already look at a lot of example but it always show the error on fprintf. I try to edit the code of fprintf(fid,'%s\n',word);%Write 'word' in text file (upper) in one of the Matlab example which is Automatically Detect and Recognize Text in Natural Images.
This is the link of the code.
https://www.mathworks.com/help/vision/examples/automatically-detect-and-recognize-text-in-natural-images.html?s_tid=srchtitle
Basically the above link display the output on the command window. But, i need it to be on the txt file.
Im really new to this, i want to know what code do i need to put, how and where should i put the fprintf to make the output shown on the text file and not on the command window.
Also, can i save the text file after that? do i to put any additional code?
I really need your help. Thank u in advance!
It seems you're looking for the fopen() method. It takes two parameters, the first being the name of the file you'd like to write to, and the second being the mode. If the file specified does not exist in the root directory, it will be created on execution.
fileID = fopen('exp.txt','w');
fprintf(fileID, fid,'%s\n', word);
fclose(fileID); % Make sure to always close the stream after finishing
More on fopen() here
I want at the end of my program to get the values stored at certain variables and append them to a file let's say "result". I am going to run it several times (for different parameters) at night and then check results in the morning.
Basically, I am looking for something similar to redirection in linux (>>) for matlab.
I am using the diary function to store the whole messages from my program and i want to keep those for verifying later.
But here what I want is just some specific values. So how to do it?
It does not necessary have to be in the same file. If I can get each result in a separate file, that is ok too.
You can use a combination of diary and any function which can append data to a text file, but you have to turn off diary before writing. A short example using save
f='example.txt'
diary(f);
for ix=1:10
disp(ix);
diary off %diary off to flush
save(f,'ix','-append','-ascii')
diary(f);
end
Instead of save you can also use fprntf or dlmwrite
I want to use script file as function because somehow, I need to define methods in script file and it is not possible in script file. However, when I defines script as function and execute it then I lose work space and I can not do further analysis of variables. I do not want to set breakpoints in code. Is there a way to keep work space alive for further analysis.
At the end of the function:
save filename;
evalin('caller','load filename');
I just got an evil solution:
%get all the var-names of the fcn-workspace
myVars=who('*')
for var=myVars'
assignin('base',var{:},eval(var{:}))
end
..this will work, but it is eval :)
Is it possible to execute a Perl script within a Stata .do file?
I have a Stata .do file in which I make some manipulations to the data set and arrange it in a certain way. Then I have a Perl script in which I take one of the variables at this point, apply a Perl package to it, and make a transformation to one of the variables. In particular, I use Perl's NYSIIS function, resulting in a very short script. After this output is provided in Perl, I'd like to continue with some additional work in Stata.
Two alternatives that come to mind but that are less desirable are:
Write Stata code to do nysiis but I prefer to use Perl's built-in function.
outsheet and save the output from the Stata .do file as a .txt for Perl. Then do the Perl script separately to get another .txt. Then read in that .txt to Stata to a new .do file and resume.
Your approach number 2 is what I use to call other programs to operate on Stata data. As Nick says, Stata won't necessarily wait for your output, unless you ask it to. You first outsheet the text file, then call the Perl script from Stata using ! to run something on the command line. Finally, have Stata periodically check for the result file, using a while loop and the sleep command so Stata isn't constantly checking.
outsheet using "perl_input.txt"
!perl my_perl_script.pl
while (1) {
capture insheet using "perl_output.txt", clear
if _rc == 0 continue, break
sleep 10000
}
!rm perl_output.txt
Here, your formatted data is saved from Stata as perl_input.txt. Next, your Perl script is run from the command line, and using a while loop, Stata checks for the output every 10 seconds (sleep takes arguments in milliseconds). When it finds the output file, it breaks out of the while loop. The last line is a good idea so that when you re-use the code you don't run the risk of using the Perl output from the last run.
I think the main issue is that although you can use the shell to call up something else, Stata is not going to wait for the results.
Start with help shell to see what is possible, but your #2 does sound easiest.
Does anyone know if it's possible to automatically write a figure out to a .eps file in MATLAB?
I'm running a script that produces a large number of graphs, and it'd be nice if I didn't have to manually save each one!
print function does that:
Print figure or save to specific file format...
print(filename,formattype) saves the current figure to a file using the specified file format, such as print('BarPlot','-dpng'). If the file name does not include an extension, then print appends the appropriate one.
print(filename,formattype,formatoptions) specifies additional options that are available for some formats.
print prints the current figure to the default printer...
print or saveas will do the trick.
saveas(fig_handle, 'filename','eps')
print('-deps',fig_handle)
print -deps 1
If you want to specify the output file name, you're better off using saveas.
This was answered in this other question, using the PRINT command. Although that question dealt with making .tiff images, it should be straightforward to modify the code given in those answers to write a .eps.
Suppose, you are generating N numbers of figures in a loop, then you should try the command line:
saveas(gca,sprintf('Figure%02d.pdf',N )); it produces N figures Figure1.pdf - FigureN.pdf
saveas(gca,sprintf('Figure%02d.eps',N )); it produces N figures Figure1.eps - FigureN.eps
in place of gca one can use gcf also. First command line is a better solution.
Hope this will solve your issue.