error in figure print

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mado
mado on 19 Jun 2022
Commented: Voss on 3 Jul 2022
I am trying to run this code but i get error message
% if figname set, use it; otherwise the data file name
if isfield(cfg, 'figname') && ~isempty(cfg.figname),
set(gcf, 'Name', sprintf('Fig.%d: %s', gcf, cfg.figname), 'NumberTitle', 'off');
elseif isfield(cfg, 'datafile') && ~isempty(cfg.datafile),
slashpos = find(cfg.datafile == '/' | cfg.datafile == '\', 1, 'last');
if ~isempty(slashpos), cfg.datafile = cfg.datafile(slashpos+1:end); end;
set(gcf, 'Name', sprintf('Fig.%d: %s', gcf, cfg.datafile), 'NumberTitle', 'off');
else % shorten the figure name anyway
set(gcf, 'Name', sprintf('Fig.%d', gcf), 'NumberTitle', 'off');
end;
what does this mean?
"Error using sprintf Function is not defined for 'matlab.ui.Figure' inputs"

Accepted Answer

Walter Roberson
Walter Roberson on 19 Jun 2022
You have two calls to sprintf in which you ask to format gcf
Change those two gcf to be double(gcf)
  2 Comments
Voss
Voss on 3 Jul 2022
cfg = [];
% if figname set, use it; otherwise the data file name
if isfield(cfg, 'figname') && ~isempty(cfg.figname),
set(gcf, 'Name', sprintf('Fig.%d: %s', double(gcf), cfg.figname), 'NumberTitle', 'off');
elseif isfield(cfg, 'datafile') && ~isempty(cfg.datafile),
slashpos = find(cfg.datafile == '/' | cfg.datafile == '\', 1, 'last');
if ~isempty(slashpos), cfg.datafile = cfg.datafile(slashpos+1:end); end;
set(gcf, 'Name', sprintf('Fig.%d: %s', double(gcf), cfg.datafile), 'NumberTitle', 'off');
else % shorten the figure name anyway
set(gcf, 'Name', sprintf('Fig.%d', double(gcf)), 'NumberTitle', 'off');
end
get(gcf,'Name')
ans = 'Fig.1'

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