How do I print a legend using a character array and integer array?

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I want to print a legend that looks like this:
1st entry: 'Current solution, 4800 m DR'
2nd entry: 'Current solution, 7000 m DR'
3rd entry: 'Current solution, 9000 m DR'
4th entry: 'Archive solution, 4800 m DR'
5th entry: 'Archive solution, 7000 m DR'
6th entry: 'Archive solution, 9000 m DR'
The numbers come from a structure array. I'm trying to use sprintf, but I'm having troubles with the format of the 'Current' and 'Archive' strings. A character array does not work since sprintf iterates through each character instead of each word. Do I need to do a cell array and then do a comma separated list for that?
  1 Comment
Walter Roberson
Walter Roberson on 19 Jan 2023
A character array does not work since sprintf iterates through each character instead of each word.
A = 'Current'
A = 'Current'
sprintf('->%s<-', A)
ans = '->Current<-'
sprintf('->%c<-', A)
ans = '->C<-->u<-->r<-->r<-->e<-->n<-->t<-'
You were using the wrong format item.

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Accepted Answer

Stephen23
Stephen23 on 19 Jan 2023
COMPOSE() is perfect for this, but was first introduced in R2016b. You could use ARRAYFUN() or CELLFUN():
C = {'Current','Current','Current','Archive','Archive','Archive'};
V = [4800,7000,9000,4800,7000,9000];
fnh = @(t,n)sprintf('%s solution, %d m DR',t,n);
lgd = cellfun(fnh,C(:),num2cell(V(:)), 'uni',0)
lgd = 6×1 cell array
{'Current solution, 4800 m DR'} {'Current solution, 7000 m DR'} {'Current solution, 9000 m DR'} {'Archive solution, 4800 m DR'} {'Archive solution, 7000 m DR'} {'Archive solution, 9000 m DR'}

More Answers (1)

Fangjun Jiang
Fangjun Jiang on 18 Jan 2023
Edited: Fangjun Jiang on 18 Jan 2023
a="current";
b={'archive'};
c='current';
sprintf('%s',a)
ans = 'current'
sprintf('%s',b{1})
ans = 'archive'
sprintf('%s',c)
ans = 'current'
  2 Comments
Shelley Snider
Shelley Snider on 18 Jan 2023
I'm looking for something that prints the list of entries in my question.
Fangjun Jiang
Fangjun Jiang on 19 Jan 2023
Use a for-loop, or use the cellfun() that @Stephen23 demonstrated.
Another trick is below, if you put the data in the right format
data={'1st','2nd','3rd';'Current','Archive','Current';4800,7000,9000};
sprintf('%s entry: ''%s solution, %d m DR''\n',data{:})
ans =
'1st entry: 'Current solution, 4800 m DR' 2nd entry: 'Archive solution, 7000 m DR' 3rd entry: 'Current solution, 9000 m DR' '

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