Why not adding space between words

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Zeynab Mousavikhamene
评论： Zeynab Mousavikhamene 2020-1-29
strcat('Scale Factor = ',num2str(table2array(T(min(find(find_groups==k)),'scalefactor'))))
and the output is like:
'Scale Factor =0.65'
I need to add the space between = and 0.65. Using above code does not add the space. Any idea/solution?
  1 个评论
Guillaume
Guillaume 2020-1-29
Please note in Walter's answer how he simplified the horror that is:
table2array(T(min(find(find_groups==k)),'scalefactor')))
to
T.scalefactor(find(find_groups==k,1)))
Use proper table indexing,
table2array(Atable(rows, 'variablename')) %() indexing on a table returns a table
is simply
Atable.variablename(rows) %. indexing returns the content of the table
%or
Atable{rows, 'variablename'} % {} indexing returns the content of the table
and
min(find(something))
is simply
find(something, 1) %get the first element only

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采纳的回答

Image Analyst
Image Analyst 2020-1-29
Try fprintf()
theNumber = table2array(T(min(find(find_groups==k)),'scalefactor')); % Whatever...but don't use num2str()
fprintf('Scale Factor = %.2f.\n', theNumber);
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Guillaume
Guillaume 2020-1-29
If you don't put any restriction on the format length, then matlab won't truncate the input. So
sprintf('Name = %s', theName) %no limit to 2 characters
would work.
If you want a minimum field width of 2 characters but more if required, then
sprintf('Name = %2s', theName) %No . in the format string. Minimum field width of 2, padding with spaces if required
Zeynab Mousavikhamene
Zeynab Mousavikhamene 2020-1-29
Thank you @Image Analyst and @Allen and @Guillaume. If you post separately I can vote for your posts.

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更多回答（2 个）

Walter Roberson
Walter Roberson 2020-1-29
https://www.mathworks.com/help/matlab/ref/strcat.html
For character array inputs, strcat removes trailing ASCII white-space characters: space, tab, vertical tab, newline, carriage return, and form feed. For cell and string array inputs, strcat does not remove trailing white space.
Steven Lord
Steven Lord 2020-1-29
If you're using a release that supports string arrays, you can simplify this a bit if you trust MATLAB to do "something reasonable" when combining your text and numeric data.
x = 0.65;
S = "Name = " + x

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