We've all been there. You've got some kind of output that displays perfectly in the command window and you just want to capture that display as a string so you can use it again somewhere else. Maybe it's a multidimensional array, a table, a structure, or a fit object that perfectly displays the information you need in a neat and tidy format but when you try to recreate the display in a string variable it's like reconstructing the Taj Mahal out of legos.
Enter Matlab r2021a > formattedDisplayText()
Use str=formattedDisplayText(var) the same way you use disp(var) except instead of displaying the output, it's stored as a string as it would appear in the command window.
Additional name-value pairs allow you to
- Specify a numeric format
- Specify loose|compact line spacing
- Display true|false instead of 1|0 for logical values
- Include or suppress markup formatting that may appear in the display such as the bold headers in tables.
Demo: Record the input table and results of a polynomial curve fit
load census [fitobj, gof] = fit(cdate, pop, 'poly3', 'normalize', 'on')
Results printed to the command window:
fitobj = Linear model Poly3: fitobj(x) = p1*x^3 + p2*x^2 + p3*x + p4 where x is normalized by mean 1890 and std 62.05 Coefficients (with 95% confidence bounds): p1 = 0.921 (-0.9743, 2.816) p2 = 25.18 (23.57, 26.79) p3 = 73.86 (70.33, 77.39) p4 = 61.74 (59.69, 63.8)
gof = struct with fields:
sse: 149.77 rsquare: 0.99879 dfe: 17 adjrsquare: 0.99857 rmse: 2.9682
Capture the input table, the printed fit object, and goodness-of-fit structure as strings:
rawDataStr = formattedDisplayText(table(cdate,pop),'SuppressMarkup',true) fitStr = formattedDisplayText(fitobj) gofStr = formattedDisplayText(gof)
Display the strings:
rawDataStr = " cdate pop _____ _____ 1790 3.9 1800 5.3 1810 7.2 1820 9.6 1830 12.9 1840 17.1 1850 23.1 1860 31.4 1870 38.6 1880 50.2 1890 62.9 1900 76 1910 92 1920 105.7 1930 122.8 1940 131.7 1950 150.7 1960 179 1970 205 1980 226.5 1990 248.7 "
fitStr = " Linear model Poly3: ary(x) = p1*x^3 + p2*x^2 + p3*x + p4 where x is normalized by mean 1890 and std 62.05 Coefficients (with 95% confidence bounds): p1 = 0.921 (-0.9743, 2.816) p2 = 25.18 (23.57, 26.79) p3 = 73.86 (70.33, 77.39) p4 = 61.74 (59.69, 63.8) "
gofStr = " sse: 149.77 rsquare: 0.99879 dfe: 17 adjrsquare: 0.99857 rmse: 2.9682 "
Combine the strings into a single string and write it to a text file in your temp directory:
txt = strjoin([rawDataStr; fitStr; gofStr],[newline newline]); file = fullfile(tempdir,'results.txt'); fid = fopen(file,'w+'); cleanup = onCleanup(@()fclose(fid)); fprintf(fid, '%s', txt); clear cleanup
Open results.txt.
winopen(file) % for Windows platforms
댓글 수: 5
Well that seems a bit superfluous.
str = evalc('disp(table(cdate,pop))');
And if you want to remove html tags from the output, do this:
str = regexprep(str,'<.*?>','');
This seems like a reliable alternative to diary, which doesn't always turn on and off when intended. Thanks for pointing this out, Adam.